SWOMCD
SPC MCD 181909 COR
OHZ000-KYZ000-INZ000-182000-
MESOSCALE DISCUSSION 0122
NWS STORM PREDICTION CENTER NORMAN OK
0109 PM CST WED FEB 18 2009
AREAS AFFECTED...CNTRL OH INTO NRN KY
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 181909Z - 182000Z
CORRECTED FOR SITE ID ERROR
THE POTENTIAL FOR A FEW SEVERE STORMS CAPABLE OF MAINLY HAIL AND
DAMAGING WIND GUSTS IS EXPECTED TO SPREAD W-E ACROSS DISCUSSION AREA
THIS AFTERNOON. CONVECTIVE TRENDS ARE BEING MONITORED FOR A
POSSIBLE WW.
RADAR AND SATELLITE IMAGERY SHOW DEEPENING CUMULUS AND LOW-TOPPED
TSTM DEVELOPMENT ALONG COLD FRONT FROM THE IND/KY BORDER W OF DAY TO
SW OF SDF AS OF 1850Z. COMPARISON OF 12 AND 18Z ILN SOUNDINGS
INDICATES THAT SUBSTANTIAL DIFFERENTIAL ADVECTIONS /BOTH ALOFT AND
IN THE BOUNDARY LAYER/ ARE CONTRIBUTING TO RAPID DESTABILIZATION
WITHIN MIDLEVEL DRY SLOT ATTENDING SHORT WAVE TROUGH MOVING THROUGH
THE OH VALLEY. MODIFICATION OF 18Z ILN SOUNDING FOR SURFACE
TEMPERATURES IN THE MID 50S AND A DEWPOINTS OF AROUND 50 F YIELDS
MLCAPE AROUND 500 J/KG AND RELATIVELY STEEP LOW TO MIDLEVEL LAPSE
RATES.
GIVEN THE STRONG LARGELY UNIDIRECTIONAL WIND FIELDS IN PLACE ALONG
AND AHEAD OF COLD FRONT...ENVIRONMENT WILL SUPPORT A FEW LOW-TOPPED
SEVERE STORMS CAPABLE OF MAINLY DAMAGING WINDS AND HAIL.
..MEAD.. 02/18/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PBZ...RLX...CLE...JKL...ILN...LMK...
LAT...LON 38288546 39828458 40588384 40708317 40678250 40308203
39528209 38798270 38378319 38208387 38288546
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.
No comments:
Post a Comment