[MCD] SWOMCD

Fri May 19 23:06:45 UTC 2006

ACUS11 KWNS 192303
SWOMCD
SPC MCD 192303 
IDZ000-MTZ000-ORZ000-WAZ000-200100-

MESOSCALE DISCUSSION 0898
NWS STORM PREDICTION CENTER NORMAN OK
0603 PM CDT FRI MAY 19 2006

AREAS AFFECTED...NORTH CENTRAL/NORTHEAST ORE AND SOUTHEAST WA INTO
ID/FAR WESTERN MT

CONCERNING...SEVERE THUNDERSTORM WATCH 364...

VALID 192303Z - 200100Z

SEVERE THUNDERSTORM WATCH 364 CONTINUES UNTIL 04Z ACROSS NORTH
CENTRAL/NORTHEAST ORE AND SOUTHEAST WA INTO NORTHWEST ID. LARGE
HAIL/DAMAGING WIND POTENTIAL WILL CONTINUE THROUGH EARLY EVENING
ACROSS WW 364...AND ADJACENT PORTIONS OF FAR WESTERN MT AND SOUTHERN
ID.

STRONG TO SEVERE STORMS CONTINUE LATE THIS AFTERNOON FROM NORTH
CENTRAL ORE ALONG THE COLUMBIA RIVER INTO PORTIONS OF
NORTHWEST/CENTRAL ID. THESE STORMS HAVE HAD A HISTORY OF SEVERAL
SEVERE REPORTS ACROSS NORTHERN ORE...WHILE EXHIBITING SUPERCELL
CHARACTERISTICS THIS AFTERNOON WITHIN AN ADEQUATELY SHEARED
ENVIRONMENT /40 KNOTS OR GREATER 0-6 KM/. AIDED BY LOW LEVEL
EASTERLY FLOW IN THE COLUMBIA VALLEY...ROTATING STORM CURRENTLY
ACROSS NORTHERN MORROW COUNTY ORE AT 23Z APPEARS LIKELY TO REACH THE
HERMISTON AREA BY 00Z...AND PERHAPS THE RICHLAND/PASCO/KENNEWICK WA
AREAS THEREAFTER. PER 18Z OBSERVED RAOB FROM BOISE...A RATHER
WARM/MOIST AIRMASS WITH MODERATE INSTABILITY -- 1500 J/KG MUCAPE OR
GREATER -- WILL SUPPORT A SEVERE THREAT THROUGH EARLY EVENING. 

OUTSIDE OF WW 364...A RELATIVELY MORE ISOLATED SEVERE POTENTIAL WILL
ALSO EXIST OVER THE NEXT SEVERAL HOURS INTO FAR WESTERN MT AND
SOUTHERN ID. RATHER HIGH PW ENVIRONMENT AND MODEST STORM MOTIONS
WILL SUPPORT LOCALLY HEAVY RAINFALL POTENTIAL.

..GUYER.. 05/19/2006

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

ATTN...WFO...PIH...MSO...BOI...OTX...PDT...

44352084 47012040 48241460 45971446 42261337 