RSS FeedsNWS Jacksonville » Text Product » DY3 Severe Storm Outlook Narrative (AC)
| Printer-friendly Version Surrounding: CHS FFC TAE TBW MLB Current Version Previous Versions: 1 2 3 4 5 6 Severe Storm Outlook Narrative (ac)000 ACUS03 KWNS 250725 SWODY3 SPC AC 250724 DAY 3 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0124 AM CST WED NOV 25 2009 VALID 271200Z - 281200Z ...SYNOPSIS/FCST... DEEP UPR TROUGH EXPECTED ALONG THE ERN SEABOARD EARLY ON FRIDAY WILL CONTINUE ENE OFF THE NEW ENGLAND CST THROUGH FRIDAY NIGHT. NEXT IN A SERIES OF ADVERTISED UPR SYSTEMS WILL EVOLVE OVER THE WRN CONUS DURING THE DAY 3 PD. THE UPR TROUGH IS FCST TO SPLIT WITH NRN STREAM ENERGY MOVING TOWARD THE NRN ROCKIES AND A SRN STREAM IMPULSE LIKELY CLOSING INTO A LOW OVER SRN CA BY EARLY SATURDAY. DOWNSTREAM...A SUB-TROPICAL WAVE WILL EJECT ACROSS NRN MEXICO AND INTO THE SRN PLAINS. STRONG SFC ANTICYCLONE BUILDING SEWD IN WAKE OF THE ERN STATES SYSTEM WILL FORCE A CP AIR MASS WELL INTO THE SRN GULF OF MEXICO BY FRIDAY AFTN. AS THE SUB-TROPICAL IMPULSE TRANSLATES TOWARD THE SRN PLNS...WEAK RETURN FLOW IS EXPECTED INTO PARTS OF CNTRL/SRN TX...WITH ONLY A PARTIALLY-MODIFIED GULF BOUNDARY LAYER ADVECTING INLAND. THUS...ONLY ISOLD AND SUB-SVR TSTMS CAN BE EXPECTED OVER PORTIONS OF CNTRL/SRN TX FRIDAY AFTN/NIGHT IN ASSOCIATION WITH THE UPR WAVE. OTHER ISOLD TSTMS MAY ACCOMPANY THE UPR TROUGH ACROSS THE INTERMOUNTAIN W AMIDST STEEP LAPSE RATES AND FAVORABLE OROGRAPHIC/DYNAMIC UVV. ..RACY.. 11/25/2009 |
