***THERE IS THE POTENTIAL FOR MORE STRONG TO SEVERE THUNDERSTORMS*** OVER A MAJORITY OF UPSTATE NY & PENNSYLVANIA ON THIS LABOR DAY, ALONG WITH THE CHANCE FOR MORE AREAS OF "FLASH FLOODING": ***THE SYNOPSIS...A BROAD/ AMPLIFIED UPPER- LEVEL TROUGH OVER THE EASTERN/ SOUTHERN GREAT LAKES WILL MOVE EAST TODAY...PUSHING A COLD FRONT ACROSS THE REGION DURING THE AFTERNOON. THE ROTATING UPPER TROUGH WILL EJECT SHORT WAVE IMPULSES THROUGH A VERY UNSTABLE ENVIRONMENT & WITH THE COMBINATIONS OF DAYTIME SURFACE HEATING & MOISTURE- LATENT AIR FEEDING NORTHEAST AHEAD OF THE FRONT UP TO 1000 J/ KG`S OF CONVECTIVE ENERGY, ALONG WITH POOLS OF COLDER AIR ALOFT DESCENDING TO NEAR THE SURFACE NEAR PEAK HEATING THIS AFTERNOON WILL CAUSE SOME SIGNIFICANT DESTABILIZATION TO OUR ATMOSPHERE & CREATE QUICKLY FORMING ISOLATED TO SCATTERED STRONG T- STORMS. WITH UNIDIRECTIONAL WIND SHEAR, STEEPENING LOW/ MIDDLE LAPSE RATES & RATHER STRONG UPDRAFTS/ DOWNDRAFTS...A FEW OF THE STRONGER MULTI- CELLS WILL HAVE THE CAPABILITY TO PRODUCE "STRONG DAMAGING WIND GUSTS" & "DAMAGING HAIL, AS WELL AS VERY HEAVY DOWNPOURS IN THE VERY HUMID & HIGH DEW POINT ATMOSPHERE. AFTERNOON HIGHS WILL BE WELL UP THROUGH THE 80`S AGAIN WITH "REAL FEEL TEMPS." EXCEEDING 90 ACROSS THE EASTERN TWO THIRDS OF THE REGION. **FROM** STEVE MATTISON...VOLUNTEER SKYWARN SPOTTER FOR THE NWS.
Posted on: Mon, 02 Sep 2013 16:03:52 +0000