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MESOSCALE DISCUSSION 2112
NWS STORM PREDICTION CENTER NORMAN OK
0337 PM CDT MON AUG 18 2008
AREAS AFFECTED...MUCH OF CNTRL OREGON
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 182037Z - 182300Z
STORMS ARE EXPECTED TO INCREASE IN COVERAGE AND INTENSITY THROUGH
THE AFTERNOON WITH ISOLATED SEVERE HAIL LIKELY.
CU FIELDS CONTINUE TO INCREASE ACROSS OREGON AS DAYTIME HEATING AND
UPPER LEVEL COOLING DESTABILIZE THE ATMOSPHERE. SATELLITE IMAGERY
CLEARLY SHOWS THE LEADING EDGE OF THE UPPER SHORTWAVE TROUGH MOVING
NEWD ACROSS NRN CA INTO OREGON. ALTHOUGH LOW LEVEL WINDS HAVE VEERED
TO WLY BEHIND THE SURFACE FRONT...DEEP LAYER FLOW ALOFT IS STRONG
ENOUGH FOR LONG LIVED CELLS. RELATIVELY COOL MID LEVEL TEMPERATURES
AND SUFFICIENT MOISTURE WILL RESULT IN HAIL POTENTIAL...WITH MAXIMUM
SIZES ON THE ORDER OF 1.00-1.75".
..JEWELL.. 08/18/2008
ATTN...WFO...BOI...PDT...MFR...PQR...
42521988 42362139 42082266 42092322 42412337 42972334
43662295 44672265 45242236 45572155 45672054 45501985
45131910 44581866 43891873 43401904 42791932
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