[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 212254
SWOMCD
SPC MCD 212253 
PAZ000-220030-

MESOSCALE DISCUSSION 0806
NWS STORM PREDICTION CENTER NORMAN OK
0553 PM CDT FRI MAY 21 2004

AREAS AFFECTED...PA

CONCERNING...SEVERE THUNDERSTORM WATCH 235...

VALID 212253Z - 220030Z

AN INTENSE SQUALL-LINE REMAINS INTACT ACROSS WRN PA. THIS LINE WILL
CONTINUE TO MOVE QUICKLY ESEWD ACROSS CNTRL AND SRN PA OVER THE NEXT
FEW HOURS WITH WIDESPREAD WIND DAMAGE LIKELY.

SFC ANALYSIS SHOWS AN AXIS OF MID TO UPPER 60S F DEWPOINTS EXTENDING
NWD FROM MD ACROSS CNTRL AND ERN PA. MODERATE INSTABILITY IS PRESENT
ALONG THIS AXIS AND THE INSTABILITY WILL FUEL THE SQUALL-LINE AS IT
MOVES ESEWD. IN ADDITION...A STRONG REAR INFLOW JET IS PRESENT JUST
BEHIND THE LINE. THIS ALONG WITH UNIDIRECTIONAL WIND PROFILES AND A
FAST ESEWD MOVEMENT OF 45 KT WILL MAKE WIND DAMAGE LIKELY WITH THE
LINE OVER THE NEXT FEW HOURS. HAIL WILL ALSO BE POSSIBLE WITH THE
STRONGER CELLS WITHIN THE LINE.

..BROYLES.. 05/21/2004

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...PHI...BGM...CTP...PBZ...CLE...

40348014 41067974 41877969 41957771 41787533 40837519
39907537 39837668 39787996 

WWWW