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Fall 2015 Pattern Discussion


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Atleast it looks to be pushed into TX, with the big high over the Mid Atlantic!

 

 

It's a bit of a weird situation. The storm forms just west of Yucatan, and then curves up around the gulf. It definetly looks like it should take a turn NW there, but the GFS takes it in along the LA/TX border and the ECMWF has it further south, and takes it east. In all honesty, it's really way too far out to analyze it like that. It's not even a guaruntee yet that it will form, though the consensus is impressive this far out.

 

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Another week of dry weather but then the GEFS/EPS both agree on a wet week 2...we shall see.

We are almost dusty dry again here! It hasn't rained in about 8-10 days and looks like we add another 10 days to that , atleast! It seems to be feast or famine around here, and this is some of the most boring weather ever! The cold air is nice, but there is not even a cirrus cloud in the sky for days at a time!
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We are almost dusty dry again here! It hasn't rained in about 8-10 days and looks like we add another 10 days to that , atleast! It seems to be feast or famine around here, and this is some of the most boring weather ever! The cold air is nice, but there is not even a cirrus cloud in the sky for days at a time!

 

We should enjoy the sun while we can, this theoretically should be very wet from Nov-Feb for us.  Although we will see...it would be funny if it was a cold/dry winter.

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There will be frost warnings for areas south and east of Raleigh tonight. After that the growing season should be over for all in the RAH zones:

 

.NEAR TERM /THROUGH TONIGHT/...
AS OF 215 PM MONDAY...

MAIN ISSUE CONTINUES TO BE THE RISK OF FROST AND/OR FREEZE
CONDITIONS TONIGHT. A WEAK SHORTWAVE TRACKING ESE ACROSS SC LATE
TODAY THROUGH TONIGHT WILL HAVE NO MOISTURE TO WORK WITH... THUS
EXPECT GENERALLY CLEAR SKIES TO PERSIST. THE RIDGE OF SURFACE HIGH
PRESSURE WILL SETTLE OVERHEAD... LEADING TO CALM AIR AND EXCELLENT
RADIATIONAL COOLING CONDITIONS GIVEN THE LACK OF CLOUDS. THE
RESIDENT AIR MASS WILL CONTINUE TO SLOWLY MODIFY HOWEVER... SO TEMPS
SHOULD END UP NEAR OR A DEGREE OR TWO HIGHER THAN THEY WERE THIS
MORNING. A LARGE PORTION OF CENTRAL NC DID SEE TEMPS NEAR OR BELOW
FREEZING THIS MORNING... THUS WE`VE BEEN ABLE TO DECLARE AN END TO
THE GROWING SEASON (AND THUS AN END TO FROST/FREEZE PRODUCTS)
ROUGHLY ALONG AND NORTH/WEST OF A LINE FROM LAURINBURG TO SANFORD TO
NASHVILLE TO SCOTLAND NECK. (SEE PUBLIC INFORMATION STATEMENT FOR
DETAILS.)
EAST/SOUTH OF THIS LINE... SOME RURAL/OUTLYING SPOTS DID
SEE TEMPS NEAR OR BELOW FREEZING... BUT NOT WIDESPREAD ENOUGH TO
CEASE FROST/FREEZE PRODUCTS JUST YET. LATEST GUIDANCE AS WELL AS
ADJUSTED PERSISTENCE POINTS TO LOWS OF 29-37. WILL EXPAND THE
EXISTING FROST ADVISORY TO COVER THOSE AREAS WHERE THE FROST/FREEZE
PROGRAM IS STILL ACTIVE. -GIH


 

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It'll rain middle next week, thankfully low dps and 4 nights of frost dried out top soil. Anyway looks like a 1035 to 1040 HP is going to be sliding by in the ne mid end next week. So should see a big cad setup. Need a surface lp out of the Gulf to set off any fireworks. I'll have to check models in a while to see if euro ens have any warning shots

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Well fellas, looks like Fall is taking a break for a few days per most of the forecasts out there. Been an AWESOME few days and got a couple mornings of frost in the upstate, but not quite a killing freeze. If you haven't had a freeze yet, you may have quite a wait. If Accuweather is correct (I know it's Accuweather...) there will be no freeze between now and the first week of Dec for GSP. This might actually show a little support for the slow start to Winter everyone seems to be going with.  

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Well fellas, looks like Fall is taking a break for a few days per most of the forecasts out there. Been an AWESOME few days and got a couple mornings of frost in the upstate, but not quite a killing freeze. If you haven't had a freeze yet, you may have quite a wait. If Accuweather is correct (I know it's Accuweather...) there will be no freeze between now and the first week of Dec for GSP. This might actually show a little support for the slow start to Winter everyone seems to be going with.

Somebody has been looking at their 30 day forecast on accuweather! Shame shame!

May not have a freeze next week, but some wedge and highs in the 50s, sounds awesome!

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Well fellas, looks like Fall is taking a break for a few days per most of the forecasts out there. Been an AWESOME few days and got a couple mornings of frost in the upstate, but not quite a killing freeze. If you haven't had a freeze yet, you may have quite a wait. If Accuweather is correct (I know it's Accuweather...) there will be no freeze between now and the first week of Dec for GSP. This might actually show a little support for the slow start to Winter everyone seems to be going with.  

That's what I'm hoping for (...not too cold in November). I would like to see trougheness in the west (even -PNA, +NAO) and then a flip to cold around Thanksgiving or the first week of December. If we can get that I'll be excited about our upcoming winter. But that's just me....

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Thought we'd see some mischief next week with that big HP sliding across the NE. Kudos to Robert for pointing this out. Hopefully the Brickster want get his trick or treat plans messed up. Allow me to introduce him to the potential so he can start to worry. 

 

LONG TERM /SUNDAY THROUGH THURSDAY/...
AS OF 305 AM FRIDAY...

ACTIVE WEATHER TO MAKE A RETURN THIS WEEK WITH COLD AIR DAMMING
(TUE AND WED)... THEN POTENTIALLY A HEAVY RAIN EVENT (WED-THU).

SUNDAY LOOKS TO BE PRE-FRONTAL AND RATHER WARM. THERE MAY BE SOME
SHOWERS IN THE NW PIEDMONT SUNDAY AFTERNOON AS THE FRONT APPROACHES.
HIGHS GENERALLY IN THE 70S EXPECTED. THE FRONT WILL SAG SOUTH
THROUGH THE REGION SUNDAY NIGHT AND EARLY MONDAY AND THE WINDS WILL
SHIFT TO THE NE. MOST MODELS SUGGEST THAT DEEP MOISTURE WILL PREVAIL
OVER MOST OF OUR REGION... EVEN THE NE... BUT MOST ESPECIALLY THICK
OVER THE THE WESTERN THIRD OF NC (PER UPSLOPE ENHANCEMENT) WE WILL
CONTINUE TO TREND THIS WAY MONDAY AND KEEP LOW CHANCE POP IN THE
WESTERN PIEDMONT ALONG WITH CONSIDERABLE CLOUDINESS. THERE MAY BE A
FEW BREAKS IN THE NE AS IT LOOKS NOW... BUT STILL NO BETTER THAN
MOSTLY CLOUDY MONDAY AND MONDAY NIGHT. HIGHS WILL BE MUCH COOLER...
IN THE UPPER 50S AND 60S.

TUESDAY INTO WEDNESDAY... HYBRID COLD AIR DAMMING (CAD) IS EXPECTED
TO AFFECT OUR REGION AS THE STRONG HIGH BUILDS STRONGLY
SOUTHWESTWARD DOWN THE EASTERN SEABOARD THROUGH NC/SC AND GA. AS THE
MAIN SURFACE HIGH SHIFTS EAST AND OFF THE NEW ENGLAND COAST
WEDNESDAY... OVERRUNNING OF THE DEEP SUBTROPICAL SW FLOW ALOFT WILL
COMBINE WITH THE LOW LEVEL FLOW FROM OFF THE ATLANTIC TO LOWER AND
THICKEN CLOUDS AND INCREASE THE RAIN CHANCES.

MODELS AND ENSEMBLES ARE COMING INTO BETTER AGREEMENT IN THE
EVOLUTION OF THE WET SYSTEM THAT IS FORECAST TO AFFECT OUR REGION
AND THE ENTIRE SOUTHERN AND EASTERN PART OF THE UNITED STATES BY
AROUND MIDWEEK INTO LATE WEEK.

UNRESOLVED ISSUES STILL INCLUDE CURRENT CAT 5 HURRICANE PATRICIA IN
THE PACIFIC AND THE EVENTUAL ENTRAINMENT OF THE REMNANTS OF THIS
SYSTEM INTO THE EASTERN TROUGH AFTER IT PUSHES NE ACROSS MEXICO IN
THE COMING DAYS... AND THE TIMING/ STRENGTH OF THE POLAR JET ENERGY
THAT IS EXPECTED TO TRACK ACROSS SOUTHERN CANADA EVENTUALLY ALLOWING
THE MERGING OF THE TWO INTO A MAJOR SURFACE STORM THAT WOULD TRACK
NEAR THE EASTERN GREAT LAKES MID TO LATE WEEK. THE OPERATIONAL
GFS/EC BOTH INDICATE THIS MERGING OF THE SYSTEMS AND DEPICT A STRONG
STORM THAT LIFTS THROUGH THE EASTERN LAKES... AND A WET TRAILING
FRONT THAT SWEEPS ACROSS THE GULF COAST STATES AND THROUGH ALL THE
MID-ATLANTIC AND SE STATES LATE WED-THU.

THE SYSTEM SHOULD PULL COPIOUS AMOUNTS OF MOISTURE FROM THE
SUBTROPICAL PACIFIC... WARM AND MOIST GULF OF MEXICO... AND SOUTH
ATLANTIC GULF STREAM LIKELY RESULTING IN HEAVY RAIN FOR A GOOD
PORTION OF NC MIDWEEK. SINCE THE FINER DETAILS ARE STILL TO BE
DETERMINED... SUCH AS TIMING OF HEAVIEST RAIN... QPF... AND ANY
SEVERE THREAT... WE WILL SIMPLY ADD SOME WORDING INTO THE HAZARDOUS
WEATHER OUTLOOK CONCERNING THE HEAVY RAIN THREAT WED-THU... AND
CONTINUE TO ADVERTISE THE HIGHEST POP AND SIGNIFICANT WEATHER AS
CURRENTLY ADVERTISED. DAYTIME TEMPERATURES SHOULD BE COOLEST
WEDNESDAY DUE TO THE CAD... BUT WARM WEDNESDAY NIGHT AND THURSDAY AS
THE STORM LIFTS WEST OF OUR REGION... AND THE COLD FRONT PLOWS IN
FROM THE WEST.

&&

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I hope it's right! Nothing worse than a hot Halloween , except maybe a hot Christmas !

Nothing like a sweaty costume! Wedge looks good for Tue/Wed also!

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Overall the weather is boring (..around here), but we do have an interesting CAD setup the next few days.

 

.LONG TERM /TUESDAY THROUGH SATURDAY/... AS OF 305 AM SUNDAY... TUESDAY INTO WEDNESDAY... RAIN WITH A WELL DEFINED HYBRID COLD AIR DAMMING (CAD) EVENT IS EXPECTED OVER OUR PIEDMONT DAMMING REGION TUESDAY INTO WEDNESDAY WITH HIGH CONFIDENCE. THE MAIN QUESTION MARKS CONTINUE TO BE WITH THE TRACK/STRENGTH OF THE LOW PRESSURE THAT SHOULD LIFT NORTHWARD FROM THE GULF COAST STATES... LIKELY TRACKING WEST OF THE APPALACHIANS TUE-WEDNESDAY... THE DEVELOPMENT/END OF THE CAD EVENT TUE-WED... AND THE RESULTANT TIMING OF RAIN/QFP/AND TEMPERATURES. WITH CAD EXPECTED TO BE FIRMLY IN PLACE TUESDAY INTO TUESDAY NIGHT ALONG AND EAST OF THE BLUE RIDGE TUESDAY INTO TUESDAY NIGHT COURTESY OF THE 1035+ MB HIGH WEDGED INTO OUR REGION... A COASTAL/WARM FRONT WILL SURGE INLAND INTO NC/VA LATE TUESDAY NIGHT AND WEDNESDAY AS THE MAIN LOW PRESSURE LIFTS UP ALONG OR WEST OF THE MOUNTAINS TOWARD THE EASTERN GREAT LAKES. OVERRUNNING RAINS SHOULD BE WIDESPREAD TUE-TUE NIGHT WITH QPF OF 0.5 TO 1 INCH (A BIT MORE ON AVERAGE WITH THIS MODEL SUITE THAN DEPICTED WITH THE 12Z PACKAGE). IN ADDITION... IT APPEARS THAT THE CAD WILL WAX ON TUESDAY AFTERNOON INTO THE EVENING AND TEMPERATURES IN THE PIEDMONT DAMMING REGION MAY FALL INTO THE UPPER 40S DURING TUESDAY... BEFORE STEADYING OUT AND THEN POSSIBLY SLOWLY RISING INTO THE 50S WEDNESDAY. WITH THE WIDESPREAD RAIN AND STORM LIFTING WEST OF THE MOUNTAINS... THIS PATTERN IS FAVORABLE FOR A LONGER DURATION CAD EVEN WITH THE PROGRESSIVE NATURE OF THE PARENT SURFACE HIGH PRESSURE (WHICH MOVES OFFSHORE LATE TUESDAY. AS THIS OCCURS... AND THE STORM LIFTS TOWARD THE GREAT LAKES BY EARLY WEDNESDAY... A WELL DEFINED COASTAL/WARM FRONT SHOULD MOVE INLAND BETWEEN 12Z-18Z... THE LIFT NORTH INTO VA DURING THE AFTERNOON. HOWEVER... RESIDUAL CAD CONDITIONS (LOW OVERCAST/FOG/DRIZZLE/LIGHT RAIN) WILL LIKELY LINGER WELL INTO WEDNESDAY NIGHT IN THE NW PORTIONS OF OUR PIEDMONT. TEMPERATURES IN THE COASTAL PLAIN AND SANDHILLS ARE APT TO RISE QUICKLY WITH THE PASSAGE OF THE COASTAL FRONT EARLY WEDNESDAY. AFTER MOSTLY 50S ARE EXPECTED FROM FAY TO GSB ON TUESDAY WITH OCCASIONAL RAIN... TEMPS MAY SOAR INTO THE 70S WEDNESDAY AFTERNOON THERE. CONDITIONS SHOULD REALLY BEGIN TO IMPROVE THURSDAY... BUT LIKELY NOT UNTIL THE MAIN FRONT FINALLY PUSHES THROUGH EARLY IN THE DAY. THE WESTERLY FLOW SHOULD AID IN WARMING/DRYING ON THURSDAY AS HIGHS REACH INTO THE LOWER TO MID 70S. DRY AND COOLER AIR WILL FILTER IN ON THE NORTHERLY FLOW THURSDAY NIGHT AND FRIDAY. LOWS 40-45 AND HIGHS IN THE 60S FRIDAY AND SATURDAY. &&

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