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New Orleans Local Weather thread - ROLLTIDE - 11-13-2008 01:18 AM

NATIONAL WEATHER SERVICE NEW ORLEANS LA
343 PM CST WED NOV 12 2008

.DISCUSSION...
LATEST SURFACE ANALYSIS SHOWED AN INVERTED TROUGH FROM SOUTH
TEXAS TO CENTRAL LOUISIANA. IN ADDITION...WEAK SOUTH FLOW WAS
NOTED ACROSS EAST AND SOUTHEAST LOUISIANA AND MISSISSIPPI.
GFS...NAM AND NGM INITIALIZED A PRECIPITABLE WATER SWATH OF 1.6 TO
1.8 FROM CENTRAL LOUISIANA TO NORTHWEST GULF. THIS SWATH WILL SHIFT
EAST TONIGHT ACROSS THE CENTRAL AREAS OF THE FORECAST AREA. WITH
OUR FORECAST AREA BETWEEN DISTURBANCES...WILL BE HARD PRESS TO
MAINTAIN LIKELY POPS WITH JUST MOISTURE. WILL DECREASE POPS BEFORE
THE CLOSED LOW DEVELOPS OVER SOUTH TEXAS THURSDAY. MOREOVER...THE
MOISTURE AXIS WILL PULL NORTH OVER THE NORTHWEST ZONES THURSDAY
INTO THURSDAY AFTERNOON. WILL MAINTAIN POPS INTO THURSDAY NIGHT
AND INCREASE RAIN CHANCES AS THE LOW OPENS AND LIFT EAST EARLY
FRIDAY MORNING THROUGH FRIDAY NIGHT. WITH NO DEFINITE FOCUS OR
STATIONARY BOUNDARY AND SW FLOW ALOFT BECOMING
DISTURBED...WIDESPREAD HEAVY RAINFALL IS NOT EXPECTED. INSTABILITY
ALONG AND SOUTH OF UPPER LOW EAST TRACK WILL PLACE MORE CONVECTION
OVER THE GULF FRIDAY. THE MAIN TROUGH WILL PUSH THE MOISTURE OUT
OF THE AREA SATURDAY MORNING. A 60M DROP FROM GENERALLY 3000M TO
2940M BY SATURDAY MORNING WILL CREATE STRONG WINDS SOUTH OF LAKE
PONTCHARTRAIN SATURDAY. A DRY FORECAST CAN BE EXPECTED THROUGH
NEXT WEDNESDAY.

&&

.AVIATION...
A LARGE CLUSTER OF SHOWERS IS SLOWLY MOVING EASTWARD ACROSS THE
AREA. THE WESTERN EDGE OF THIS ACTIVITY IS NOW EAST OF MCB AND CLOSE
TO BTR. PERIODS OF HEAVIER RAINFALL HAS MAY RESULT IN VIS BRIEFLY
DROPPING DOWN TO 1SM. THE LIKELIHOOD OF STRONGER SHOWERS WILL
DIMINISH AS THE AFTN/EVEN PROGRESSES AND THE SYSTEM SLIDES EASTWARD.
LIGHT/CALM WINDS AND COPIOUS MOISTURE IN PLACE OVERNIGHT WILL LIKELY
RESULT IN BR CONDITIONS ACROSS THE AREA. IFR AND MVFR WILL BE THE
MOST COMMON FLIGHT RESTRICTIONS THROUGH THE PERIOD.

&&

.MARINE...
DECIDED TO CONTINUE THE EXERCISE CAUTION ON THE COASTAL WATERS AS
WIND SPEEDS AT MULTIPLE BUOYS CONTINUE ABOVE 15 KNOTS. WINDS SHOULD
BEGIN TO RELAX SOMEWHAT OVERNIGHT...ALLOWING TO DROP THE HEADLINE.

GENERALLY LIGHT SOUTHEAST ARE EXPECTED ALONG THE COAST DURING THE
NEXT TWO DAYS AS INCREASED RAIN CHANCES CONTINUE. A STRONG COLD
FRONT WILL PUSH THROUGH THE AREA FRIDAY NIGHT AS THE UPPER LEVEL
TROUGH FINALLY SHIFTS EASTWARD. A SMALL CRAFT ADVISORY MAY BE NEEDED
AS NORTH WINDS SHOULD BE QUITE BRISK BEHIND THE BOUNDARY.

&&


New Orleans Local Weather thread - dkmac - 11-13-2008 07:43 AM

000
fxus64 klix 130939
afdlix

area forecast discussion
national weather service new orleans la
339 am cst thu nov 13 2008

.discussion...
Fairly quiet conditions prevail across the forecast area early
this morning with only some light showers being observed in the
coastal waters west of the mississippi river and across the
immediate adjacent land areas. Extensive cloud cover was being
observed with stratus and fog being reported across the northwestern
third to half of the forecast area. Visibilities of one quarter to
one half mile at times were occurring at btr and mcb.

A cluster of convection has developed overnight across the western
gulf in advance of the upper trough situated over texas. This convection
will likely cut off the inflow of deeper moisture today...and
with little eastward movement of the upper trough to our
west...rain chances will be limited to the chance category at
best. The highest probability for rain will remain along the
southeast louisiana coast and the adjacent coastal waters. The
upper trough over texas will be kicked out to the east tonight and
friday as a deep trough digs across the central and eastern conus
friday and saturday. As the texas system is kicked out across the
western and northern gulf...rain chances will be on the increase
later tonight and friday with the best chances again expected to
be across coastal areas and the coastal waters. A strong cold
front will push across the forecast area friday night in
association with the deepening trough developing over the eastern
half of the country. Much colder and drier air will surge south
across the area by early saturday bringing an end to the rain. A
breezy to windy day will be in store saturday along with below
normal temperatures which will prevail through the weekend.

Cool high pressure at the surface will be reinforced early next
week as another upper trough moves across the great lakes...
Northeast and mid atlantic region. Another upper trough may dig
across the eastern u.s. Late next week bringing another shot of cool
air to the region.

&&

.aviation...
/preliminary for 12z tafs/
expect vlifr conditions to continue to plague kbtr and kmcb through
mid morning...with generally mvfr or vfr ceilings at kmsy and kgpt.
Strongest max moving into texas trof still on its western side...so
any eastward progress of trof today will be rather slow. This should
also keep convection well away from our terminal areas. Mixing in
the lower layers should allow conditions to improve to vfr by 18z at
all terminals...but would not be absolutely shocked if kmcb and kbtr
maintain mvfr ceilings. In any case...with light wind regime and
abundant moisture...low ceilings and visibilities will return in the
14/06z-12z time frame. Beyond the forecast period...winds should
increase friday morning with improved ceilings and visibilities. 35

&&

.marine...
Winds over coastal waters generally in the 10 to 15 knot range this
morning...with winds even lighter over the tidal lakes. Wind speeds
will stay in this general range or a little lighter for the next 24
hours. By friday morning...southerly winds will increase in advance
of cold front moving toward the area. This front will move through
the area...including all coastal waters...overnight friday night.
With strong cold air advection behind the front...winds will easily
reach small craft advisory criteria by late friday night...and
likely remain near or above advisory criteria into sunday morning
before easing. Seas should ramp up saturday morning...especially over
the outer coastal waters...up to about 7 to 9 feet by afternoon.
Then relaxing late sunday afternoon. A reinforcing shot of colder
air will again bring up winds and seas on tuesday...and again toward
the end of the week next week. 35


New Orleans Local Weather thread - ROLLTIDE - 11-13-2008 07:11 PM

FXUS64 KLIX 132151
AFDLIX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
351 PM CST THU NOV 13 2008

.DISCUSSION...
LATEST IR SATELLITE IMAGERY AND UPPER LEVEL ANALYSIS SHOWED A
VIGOROUS SHORT WAVE AXIS FROM SOUTH CENTRAL OKLAHOMA TO THE BIG
BEND OF TEXAS. CONVECTION HAD DEVELOPED EAST OF THE AXIS OVER WEST
GULF OF MEXICO. THE MAIN TROUGH WAS SITUATED OVER THE CENTRAL
PLAINS. ISOTACH ANALYSIS REVEALED NORTHWEST JET MAX OVER 17O KNOTS
FROM WEST MONTANA TO CENTRAL PLAINS. THIS MAY HELP THE SHORT WAVE
EVOLVE INTO A CLOSED LOW OVER TEXAS. THIS LOW WILL SHIFT EAST TONIGHT
BRINGING THE MOISTURE EAST OVER THE FORECAST AREA AFTER MIDNIGHT
TONIGHT. MARGINALLY MID LAYER INSTABILITY AROUND THE LOW WILL LEAD
TO A SLIGHT CHANCE OF THUNDERSTORMS AND LIKELY RAIN CHANCES LATE TONIGHT
AND FRIDAY MORNING. WILL INSERT LIKELY POPS FOR FRIDAY MORNING
WITH DECREASING RAIN CHANCES FRIDAY AFTERNOON. THE LOW/SHORT WAVE
WILL PUSH EAST FRIDAY AFTERNOON AND TAKE THE MID LAYER
INSTABILITY. THE MAIN TROUGH AXIS AND ASSOCIATED SURFACE FRONT
WILL PUSH THROUGH LATE FRIDAY NIGHT. WILL MAINTAIN A CHANCE OF
SHOWERS FRIDAY NIGHT AS THE DYNAMIC SYSTEM COULD SQUEEZE SOME
PRECIP OUT. THICKNESS LAYERS FROM 1000 TO 700MB WILL START AROUND
3000M AND DECREASE TO 2860M BY SATURDAY AFTERNOON. BL WINDS NEAR
23 KNOTS ACCORDING TO GFS AND 27 KNOTS OFF OF NAM12(ETA) ARE
EXPECTED TO SWEEP ACROSS THE FORECAST AREA EARLY SATURDAY MORNING.
NEAR 100 PERCENT BL WINDS SHOULD MIXED DOWN SOUTH OF THE LAKE AND
WILL LIKELY PROMPT A WIND ADVISORY FOR SATURDAY MORNING. SURFACE
HIGH WILL PARK OVER EAST TEXAS SUNDAY MORNING AND NORTH ZONES MAY
SEE A NEAR FREEZE SUNDAY MORNING AND AGAIN MONDAY MORNING. AN
EMBEDDED WAVE IN THE NORTHWEST FLOW TUESDAY WILL PRODUCE HIGH
CLOUDS. ANOTHER STRONG SYSTEM IS POISED TO TRACK OVER THE CENTRAL
GULF COAST REGION NEXT SATURDAY.

&&

.AVIATION...
A FEW SHOWERS REMAIN OFFSHORE AND WEST OF THE AREA...BUT SHOULD
REMAIN DRY FOR THE REST OF TODAY. LOW CEILINGS HAVE KEPT MVFR
CONDITIONS AT BTR AND MCB WHILE GPT AND MSY ARE VFR. THE CLEARING
SEEN ON VIS SATELLITE SHOULD REACH BTR SHORTLY AND POSSIBLY MCB
BEFORE SUNSET. AFTERWARD...LOWER CLOUDS ARE EXPECTED TO MOVE IN
FROM THE WEST AND SOUTHWEST LATE THIS EVENING. WITH PERSISTENT LIGHT
WINDS...EXPECT BR TO BEGIN TO DEVELOP AFTER MIDNIGHT WHILE CIGS AND
VIS DECREASE TO IFR AND LIFR BY SUNRISE. INTRODUCED PROB30 FOR RA
LATE IN THE PERIOD AS AN UPPER LEVEL LOW PRESSURE SYSTEM MOVES
TOWARDS THE AREA LIKELY RESULTING IN SHOWERS ACROSS THE AREA.

&&


New Orleans Local Weather thread - dkmac - 11-14-2008 06:48 AM

000
fxus64 klix 140940
afdlix

area forecast discussion
national weather service new orleans la
340 am cst fri nov 14 2008

.discussion...
Upper low/trough that resided over texas yesterday was ejecting
east northeast across the northwest gulf of mexico early this
morning. Some convection associated with this system was noted
over the extreme northwest gulf and regional radars were showing
an increase in showers across the local coastal waters...although
the majority of the precipitation still was located to the south
and southwest of lake charles. Models continue to forecast this
upper level feature to quickly pull off to northeast today and
tonight and weaken as a deep upper trough is carved out over the
central and eastern conus that will shift eastward over the
weekend. Deep moisture has been lacking over the area with
significant dry air in the mid levels observed in the sil 00z
sounding. Deeper moisture will likely be transported northward
from the gulf today as the upper low/trough advances toward the
area. A weak surface reflection of this system may move across the
forecast area this afternoon just in advance of the cold front
that will push across the region late today and tonight. Although
a part of the forecast area will likely be in the warm sector for
a brief period of time today...instability is forecast to be
marginal so only isolated thunderstorms are mentioned in the
forecast.

In the wake of the cold front that will move east and south of
the forecast area tonight...much colder air will surge across the
area with strong cold air advection continuing through saturday.
Strong winds meeting small craft advisory criteria are expected
from late tonight through saturday night across the coastal
waters...and wind advisory criteria may be met over land areas to
the south of lakes pontchartrain and maurepas saturday.

Northwest flow aloft will prevail from saturday through next week
with the cool air being reinforced early next work week and again
late in the week as two more upper troughs move across great lakes...
Northeast and mid atlantic regions.

&&

.aviation...
/preliminary for 12z tafs/
most sites reporting mvfr visibilities this morning...with the
exception of here at the wfo...where vsby is 1/4sm. Would expect to
see ifr vsbys and ceilings for a few hours around sunrise...vfr
conditions can be expected at all terminals after about 15z.
Convective activity...still well southwest in the gulf...should not
affect local terminals until around 18z or after. Otherwise...vfr
conditions will continue until passage of the cold front. Front will
move quickly through all terminals during the late evening and early
morning hours...with a short period of mvfr ceilings before post
frontal clearing. While most sites will see sustained winds of 15 to
20 knots with frontal passage...winds off of lake pontchartrain
likely to produce sustained 20 to 25 knot winds with gusts to 30 to
35 knots for several hours around 12z saturday at kmsy and knew. 35

&&

.marine...
Main story will be post frontal winds. Current winds under 10 knots
on tidal lakes and over coastal waters. Weak surface low moving
eastward across the gulf will keep easterly winds in place for
several more hours...until we get into gradient in advance of front.

Front will move through all coastal waters and tidal lakes between
03z and 12z saturday. Strong cold advection will easily produce 20
to 25 knot sustained winds behind the front...with occasional gusts
to gale force possible. Will continue small craft advisory as
currently delineated. Winds will stay up into sunday morning before
easing. Seas of 7 to 10 feet likely over the outer waters during
this period. Reinforcing shots of cold air will allow winds to
return to advisory criteria monday night or tuesday...and again next
thursday. 35


New Orleans Local Weather thread - ROLLTIDE - 11-14-2008 10:38 AM

[Image: LGHT_REG_LOUISIANA_ANI.gif]


New Orleans Local Weather thread - dkmac - 11-15-2008 06:31 AM

000
fxus64 klix 150930
afdlix

area forecast discussion
national weather service new orleans la
330 am cst sat nov 15 2008

.discussion...
Generally tranquil weather conditions will prevail across the area
during the forecast period with temperatures being the main
forecast concern through the upcoming week. A strong cold front
has pushed off the southeast louisiana and mississippi coasts
early this morning with gusty winds immediately in its wake. Winds
gusted to 39 knots at mcb...39 knots at new...and 37 knots at msy
with the passage of the front. The winds have died down somewhat
now...but gusty winds at times and breezy conditions are still
expected through the day. The strongest winds will be to the south
of lakes pontchartrain and maurepas...but they are expected to
remain below wind advisory criteria. Strong cold air advection
will prevail through the day with high temperatures only expected
to be in the 60 to 65 degree range...which is about 5 to 10
degrees below normal values. Below normal temperatures are
expected through the forecast period as northwest flow aloft
prevails as the current deep upper trough moving across the
eastern conus is replaced by a broad upper trough over the
northeast conus. Short wave troughs moving through the mean
longwave trough over the northeast conus will serve to reinforce
the cool air over the region early in the work week and again late
in the week. At this time...it appears that temperatures will
remain above freezing across the forecast area...but just barely
across northern zones where minimums of 33 or 34 degrees are
expected both tonight and sunday night during the coldest of the
nights through the upcoming week.

&&

.aviation...
/preliminary 12z taf issuance/
the clearing line should continue to make its way through the region
with clear skies expected at all terminals by sunrise. Winds will
remain northwesterly between 15 and 20 kts...with gusts of 25 to 30
kts possible...especially at msy. Winds will calm into the 5 to 10
kt range overnight tonight...except at msy where sustained winds are
expected to remain at 10 to 15 kts. 95/dm

&&

.marine...
A strong cold front will continue to move quickly through the
coastal waters this morning with a substantial increase in wind
speed expected after daybreak. Off shore winds should peak around 30
kts with higher gusts. Though a few gusts will be to gale force...
Gusts of this magnitude will only last a short period and have opted
to leave only the small craft advisory in place. Winds are expected
to remain elevated through tonight. High pressure building in
behind the cold front will remain in place through the weekend.
95/dm


New Orleans Local Weather thread - ROLLTIDE - 11-15-2008 09:13 PM

FXUS64 KLIX 152123
AFDLIX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
323 PM CST SAT NOV 15 2008

.DISCUSSION...
THE COLD FRONT HAS PUSHED WELL OFFSHORE THIS AFTERNOON...LEAVING
BEHIND GUSTY WINDS AND COOLER TEMPS. WINDS SHOULD DIMINISH THROUGH
TONIGHT AS HIGH PRESSURE BUILDS INTO THE GULF COAST FROM THE
PLAINS STATES. OUR AREA SHOULD REMAIN UNDER NORTHWEST FLOW ALOFT
THROUGH MOST OF NEXT WEEK AS REINFORCING PUNCHES OF COLD AIR MOVE
INTO THE AREA ON TUESDAY AND FRIDAY. TEMPS ARE EXPECTED TO FALL
INTO THE 33-35F RANGE SUNDAY AND MONDAY MORNINGS ACROSS
SOUTHERN/COASTAL MISSISSIPPI AND EAST-CENTRAL LOUISIANA.
OTHERWISE...NO SIGNIFICANT CHANCES FOR PRECIP ARE EXPECTED THROUGH
THE FORECAST PERIOD. 25

.AVIATION...
WINDS LOOK TO HAVE PEAKED AT ALL TERMINALS EXCEPT MSY. EXPECT A
GRADUAL DECREASE WITH GUSTS DROPPING OFF AROUND SUNSET. MSY WILL
LIKELY REMAIN GUSTY SLIGHTLY LONGER AND SHOULD MAINTAIN AT 10 TO 15
KTS OVERNIGHT. SCT/BKN MID LEVEL CLOUD DECK IS EXPECTED TO LOWER
SLIGHTLY AND DIMINISH TONIGHT. LIGHTER NORTH WINDS WILL RESUME ON
SUNDAY. SKC TOMORROW AND VFR CONDITIONS WILL PREVAIL THROUGH THE
PERIOD.

MEFFER

.MARINE...
STRONG COLD FRONT IS WELL OFF SHORE AND SMALL CRAFT CONDITIONS ARE
ONGOING. WINDS HAVE REMAINED CONSISTENT IN THE LOWER 20 KT RANGE
WITH GUSTS NEAR 30 KTS. THIS IS EXPECTED TO PERSIST THROUGH TONIGHT.
WILL LEAVE ADVISORY TO EXPIRE SUNDAY AT 12Z AS WINDS SHOULD LIGHTEN
ENOUGH TO LET SEAS DIE DOWN A BIT. A WEAKER COLD FRONT EXPECTED TO
MOVE THROUGH THE REGION TUESDAY MORNING AND WILL PRESENT THE CHANCE
FOR ADVISORY CONDITIONS AGAIN. SEAS LOOK TO BE BORDERLINE...SO WILL
HAVE TO CONTINUE TO MONITOR FOR POSSIBLE ISSUANCE.

MEFFER

&&


New Orleans Local Weather thread - dkmac - 11-16-2008 06:50 AM

000
fxus64 klix 160946
afdlix

area forecast discussion
national weather service new orleans la
346 am cst sun nov 16 2008

.discussion...
Quiet weather will prevail across the forecast area through the
week with temperatures remaining below normal and dry conditions
continuing. Northwest flow aloft will persist over the region with
the mean upper trough position over the northeast quadrant of the
country and along the east coast while an upper ridge persists over the
western conus. Shortwave troughs moving through the longwave
trough will serve to reinforce surface high pressure and the cool
air over the region tuesday and again late thursday. A more zonal
flow pattern will return to the conus next weekend along with
moderating temperatures.

Although temperatures will be below normal...they area expected
to remain above freezing across the forecast area through the week.
The coldest temperatures during the period will be sunday night
and early monday morning when readings will fall into the mid 30s
across southern mississippi and the areas of southeast louisiana
to the north and northwest of lake pontchartrain.

&&

.aviation...
/12z taf issuance/
vfr conditions will prevail through the period at all taf sites.
Clear skies with generally north or northwesterly winds of 10 kts or
less will be the rule for btr...mcb and gpt. Concerning msy...though
a few hours of winds in the 10 to 15 kt range will be possible early
in the period...expect winds to continue subsiding to 5 to 10 kts
through the morning hours as the pressure gradient relaxes.
95/dm

&&

.marine...
A small craft advisory remains in effect for all of the coastal
waters through 6 am this morning. Will include a small craft
exercise caution headline from 6 am until noon. By that time...the
pressure gradient should have relaxed sufficiently to allow winds
and seas to subside below headline criteria. Will be keeping a close
eye on conditions over the waters to make sure that the timing
remains reasonable. High pressure will remain in place over the
coastal waters through the end of the work week with a reinforcing
high building in on tuesday. As this reinforcing high builds
in...exercise caution headlines may be necessary.
95/dm


New Orleans Local Weather thread - dkmac - 11-17-2008 06:25 AM

000
fxus64 klix 171002
afdlix

area forecast discussion
national weather service new orleans la
402 am cst mon nov 17 2008

.discussion...
Latest upper air analysis showed a large trough over the east coast
with northwest flow across plains and mississippi valley. Surface
analysis showed 1020mb high over the central and northwest gulf.
An embedded wave was noted in the northwest flow over illinois and
associated surface low over central illinois. This surface low
will drag a boundary through the forecast area tuesday morning.
Northwest flow will slightly lower thickness values tuesday
morning wednesday. This will maintain temps below norms for tuesday and
tuesday night. The main trough will slide east and slow increase
in thickness values will occur through friday...thus temps will be
around normals thu and fri...but dry. Very flat ridge will allow
the next system move across the conus thursday through
monday...affecting the forecast sunday. The continuous northwest
to west will limit moisture return going into the weekend. As a
result...marginal instability will be available for just a slight
chance of thunderstorms with the next system sunday...a chance of
showers is more expected.

&&

.aviation...
/12z taf issuance/
light north winds of 10 kts or less will continue through the
rest of the afternoon at all except gpt which has remained light
and variable. Surface high pressure settling into the region will
lend to calm winds overnight. Skies will clear as a very dry
airmass is in place. Vfr conditions will prevail through the next
24 hrs at all terminals. A re-enforcing cold front will increase
winds up to 10 to 15 knots at msy between 12z and 18z tuesday.

&&

.marine...
A weak pressure gradient today will keep winds/seas at bay. A
cold front moving through the area mon night/tues morn will result
in increasing northwest winds and thus higher wave heights.
Attm...small craft advisory criteria doesn/t appear to be
needed...but it will be close. Either way...expect the small craft
use caution headline to return by tuesday morning.


New Orleans Local Weather thread - dkmac - 11-18-2008 06:44 AM

000
fxus64 klix 181013
afdlix

area forecast discussion
national weather service new orleans la
413 am cst tue nov 18 2008

.discussion...
Latest upper air analysis continue to show a large trough along
the eastern conus with northwest flow over the plains and
mississippi valley. In addition...a vigorous disturbance was noted
over the ohio valley. Surface analysis showed a cold front pushing into
the gulf this morning. An elongated large 1035mb high was located
from minnesota to oklahoma. With these features in play...north to
northwest flow will lower thickness layers through wednesday...from
generally around 2960m to near 2890m for 1000 to 700mb. With clear
skies...calm winds across north zones...radiational cooling will
help mississippi coastal zones and areas along the lower pearl
river experience temps approaching the freezing mark wednesday morning.
Will handle this issue hwo with possible freeze warning wording for
tonight. A stable pattern will see broad trough move off the east
coast...but northwest flow remain across the east conus through
the weekend. Another disturbance will dive southeast across the
ohio valley to the mid atlantic states thursday into friday. The
associated surface boundary will push through the area friday
morning...according to nam to gfs. Temps were lowered in the grids over
the weekend as backdoor ridging will maintain a dry and cool
forecast. Large surface high will park along the mid atlantic
states by next monday. Upper level ridge axis will finally slide
east of the plains monday and over the mississippi valley tuesday
into wednesday. As a result...a slight warm up is possible late in
the forecast.

&&

.aviation...
/12z taf issuance/
vfr conditions will prevail through the period at all taf sites. Dry
high pressure will keep skies clear with no visibility restrictions.
The tafs are primarily a wind forecast for the period. As a
reinforcing cold front moves through the area...winds will begin to
increase during the early morning hours and will generally be in the
10 to 15 kt range by late morning and continuing into the afternoon.

&&

.marine...
A reinforcing cold front will move through the coastal waters early
this morning. As the front moves through the area...wind speeds and
wave heights will increase. Winds will be in line with small craft
advisory conditions around 20 knots with frequent gusts to 25 knots.
Will include a small craft exercise caution headline for the tidal
lakes through midnight tonight as well. Winds and seas should begin
to relax late tonight with headlines no longer necessary by wednesday
morning. High pressure will again settle into the region behind the
cold front with no additional hazards expected through thursday.