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Model Mayhem!


SR Airglow

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overnight Pac.  Sounds hopeful to me.

NOW THE UNCERTAINTY... AN ARCTIC UPPER IMPULSE ROUNDING THE LARGE
POSITIVE ANOMALY WILL DIG THROUGH CENTRAL CANADA INTO THE UPPER
MIDWEST BY THIS THURS. THE GFS AND UKMET ARE ALREADY DRIVING THIS
FEATURE THROUGH THE ERN THIRD OF THE COUNTRY TO THE EAST COAST...
WHILE THE ECMWF IS SLOWER WITH AN UPPER TROUGH AXIS THAT EXTENDS
BACK INTO THE NRN ROCKIES/PAC NW. THE SAME COMBO OF GFS/UKMET THEN
DRIVE ANOTHER VERY DYNAMIC LOOKING IMPULSE INTO THE GREAT LAKES ON
SAT... WHILE THE ECMWF IS JUST PROGRESSING THE INITIAL UPPER
TROUGH TO THE ERN SEABOARD AND THE UPSTREAM IMPULSE IS EXTREMELY
SLOWER. THIS DOES NOT TAKE INTO FACTOR THE CURRENT IMPRESSIVE
500MB LOW NEAR COASTAL WA. THE ECMWF IS VERY CONSISTENT WITH THIS
FEATURE SHEARING-OUT AND BECOMING PART OF THE UNIFORM TROUGH WHICH
REACHES THE EAST COAST BY SAT. THE GFS IS NOT VERY CONSISTENT WITH
THIS FEATURE... ORIGINALLY WRAPPING IT IN OR MESHING IT WITH THE
LARGE WEAKNESS/ANOMALY OVER THE EAST CENTRAL PAC. NOW THE 18Z/01
AND 00Z GFS DOES NOT DO THIS AND ALLOWS THE SHORT WAVE DYNAMICS TO
GET KICKED OUT BY THE DIGGING FEATURE OVER THE NERN PAC. IN
FACT... THE ENERGY KEEPING ITS STRENGTH AS IT PROGRESSES THIS
WEEKEND THROUGH THE ERN TWO-THIRDS OF THE COUNTRY... WHICH COULD
MEAN A HIGH PROFILE STORM SYSTEM WITH EXTREME DEEPENING OFF THE
NORTHEAST/MID-ATL COAST.   
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...POTENT SHORTWAVE EJECTING OUT OF NORTH-CENTRAL MX TOWARD THE ARKLATEX... ...EVENTUAL STRONG COASTAL LOW MOVING UP THE EASTERN SEABOARD... FINAL PREFERENCE: BLEND OF THE 00Z ECMWF/12Z ECMWF ENSEMBLE MEAN FORECAST CONFIDENCE: AVERAGE FORMERLY A CLOSED LOW MOVING OUT OF THE SOUTHERN CA...A PROGRESSIVE SHORTWAVE CURRENTLY AROUND THE BIG BEND OF TX WILL CONTINUE TO ACCELERATE NORTH OF EAST THE NEXT COUPLE OF DAYS. JUST LIKE YESTERDAY...THE 00Z/12Z UKMET ARE TO THE SOUTH OF THE CONSENSUS AS THE WAVE MOVES THROUGH THE SOUTHERN/SOUTHEASTERN U.S. LIKE PRECEDING SYSTEMS...THE SHORTWAVE ENERGY WILL LIFT NORTHWARD ALONG THE EASTERN SEABOARD WITH DECENT DEEPENING OCCURRING. CONSIDERING THE SURFACE LOW PLACEMENT AMONG THE ENSEMBLE CAMPS...THE CMC ENSEMBLES HAVE BEEN QUICKER WHILE THE GEFS/ECMWF MEMBERS ARE ABOUT 6 HOURS OR SO BEHIND. THE MOST STABLE AMONG THE BUNCH HAS BEEN THE ECMWF SOLUTIONS AS THEY HAVE BEEN IN A SIMILAR LOCATION THE PAST FOUR RUNS DATING BACK TO THE 31/0000Z MODEL CYCLE. THE GEFS HAVE FINALLY CAUGHT ON AFTER OVEREMPHASIZING THE NORTHERN STREAM LOW FOR MULTIPLE CYCLES IN A ROW. WILL LEAN ON THIS ECMWF SUITE STABILITY AND FAVOR A COMBINATION OF THE 00Z ECMWF/12Z ECMWF ENSEMBLE MEAN HERE.

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1 minute ago, jbenedet said:

Sorry guys, this is a mid Atlantic/SE storm imo--and not a great one at that. Flow looks too fast and confluence too strong for this to round the bend. 

There is some ensemble support, but I'm not on board right now for much even here. It's early and things can change though.

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