SWOMCD
SPC MCD 172310
WAZ000-ORZ000-CAZ000-180115-
MESOSCALE DISCUSSION 2107
NWS STORM PREDICTION CENTER NORMAN OK
0610 PM CDT SUN AUG 17 2008
AREAS AFFECTED...CNTRL AND NRN OREGON...SRN WASHINGTON
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 172310Z - 180115Z
STORMS SHOULD CONTINUE TO INCREASE IN COVERAGE AND A FEW STORMS
COULD BE SEVERE WITH STRONG WIND GUSTS AND LOW END HAIL.
VISIBLE IMAGERY SHOWS A SIGNIFICANT SURGE OF MID LEVEL MOISTURE
SPREADING NWD ACROSS THE PACIFIC NW...AHEAD OF AN UPPER TROUGH
ACROSS THE ERN PACIFIC. AT THE SURFACE...A HEAT LOW HAS FORMED
ACROSS THE COLUMBIA GORGE AREA WHERE SURFACE PRESSURE CONTINUES TO
FALL. SURFACE DEWPOINT ARE QUITE LOW OVER MUCH OF CNTRL AND SERN
OREGON...BUT HIGHER PRECIPITABLE WATER VALUES EXIST ACROSS NRN
OREGON INTO WA WHERE DEWPOINTS ARE MAINLY IN THE 40S F.
ISOLATED STORMS NOW OCCURRING ALONG THE E SLOPES OF THE OREGON
CASCADES WILL PERSIST AND MAY INCREASE AS THEY MOVE NWD. VERY HIGH
EVAPORATION POTENTIAL EXISTS GIVEN THE HOT AND DEEPLY MIXED BOUNDARY
LAYER THUS STRONG WIND GUSTS ARE LIKELY. VERY STEEP MID LEVEL LAPSE
RATES DUE TO COOLING ALOFT WILL LIKELY RESULT IN HAIL IN THE
STRONGEST CELLS.
..JEWELL.. 08/17/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...OTX...PDT...MFR...SEW...PQR...
42002274 43922248 46382247 47322121 47081960 46131954
44312022 42712067 42362069 41892075 41702126 41562189
41632262
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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