SPC AC 010710
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0210 AM CDT FRI OCT 01 2004
VALID 021200Z - 031200Z
THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 15 WNW
TTN 25 NNE NHK 15 SSW RIC 35 NE DAN 25 SSW SSU 45 ENE CRW 25 SSE PIT
20 NNW DUJ 25 W ELM 20 SW BGM 35 ESE AVP 15 WNW TTN.
GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 20 SSE TLH 50 NNE MGR
35 NW MCN 25 SW TUP 25 N MEM 45 SW LUK 45 WSW ERI.
GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 30 N PBG 10 WSW PWM.
GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 40 E DUG 20 NE INW 40
NNE BCE 35 SE SLC 4FC 30 E LVS 45 ENE ROW 30 NE INK 35 SE MAF 35 ESE
ABI 40 SE DAL 40 SSE GGG 20 NW BPT 50 N PSX 40 WNW LRD.
...THERE IS A SLGT RISK OF SVR TSTMS PORTIONS OF THE NORTHEASTERN
U.S......
...SYNOPSIS...
SPLIT FLOW WITH STRONG TROUGH IN NRN BRANCH WRN GREAT LAKES 12Z SAT
MOVING RAPIDLY EWD DURING FIRST HALF OF FORECAST PERIOD THEN NEWD
ACROSS ST LAWRENCE RIVER VALLEY AND NRN NEW ENGLAND SAT NIGHT. SRN
STREAM EXTENDS FROM SWRN U.S. EWD ACROSS TN VALLEY TO ATLANTIC
COAST. A LOW AMPLITUDE S/WV TROUGH MOVES RAPIDLY EWD FROM MID MS
VALLEY SAT AM TO OFF CAROLINA COAST BY 12Z SUN.
STRONG EARLY FALL COLD FRONT BY 12Z SAT WILL BE MOVING EWD ACROSS
UPPER OH VALLEY AND EXTENDING SWWD INTO CENTRAL TX. COLD FRONT
REACHES WRN NEW ENGLAND BY SAT EVENING SWWD ALONG APPALACHIANS INTO
NRN GULF STATES.
...PA/MD/WV/VA...
LOW LEVEL MOISTURE PRECEDING COLD FRONT WILL INCREASE WITH SURFACE
DEWPOINTS RISING TO AROUND 60F. COUPLED WITH DAYTIME HEATING...AIR
MASS WILL BECOME MODERATELY UNSTABLE WITH MLCAPES CLIMBING TO AROUND
1000 J/KG FROM PA SWD INTO VA. WHILE THE STRONG FORCING FROM NRN
BRANCH TROUGH EXPECTED TO REMAIN N OF THE AREA OF BETTER
INSTABILITY...THE 30-40KT DEEP LAYER SHEAR AND FRONTAL LIFTING
EXPECTED TO SUPPORT ORGANIZED THUNDERSTORM DEVELOPMENT. GIVEN THE
LIMITED INSTABILITY AND LAPSE RATES GENERALLY LESS THAN 6.5
C/KM...PRIMARY SEVERE THREAT WILL BE DAMAGING WINDS AND MARGINALLY
SEVERE HAIL...MOST LIKELY DURING AFTERNOON/EVENING.
..HALES.. 10/01/2004
...NOTICE...
FOR USERS DECODING THE POINTS PARAGRAPH HEREIN...LATITUDE AND
LONGITUDE POINTS FOR THE CATEGORICAL AND PROBABILISTIC OUTLOOK
GRAPHICS ALSO ARE LOCATED IN A SEPARATE PRODUCT UNDER THE WMO
HEADINGS WUUS01 PTSDY1...WUUS02 PTSDY2...AND WUUS03 PTSDY3. THE
INCLUSION OF POINTS IN THIS PRODUCT WILL EVENTUALLY BE DISCONTINUED.
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED FOR 1730Z
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