[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 200047
SWOMCD
SPC MCD 200047 
IDZ000-MTZ000-ORZ000-WAZ000-200215-

MESOSCALE DISCUSSION 0901
NWS STORM PREDICTION CENTER NORMAN OK
0747 PM CDT FRI MAY 19 2006

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

CONCERNING...SEVERE THUNDERSTORM WATCH 364...

VALID 200047Z - 200215Z

VALID PORTION OF SEVERE THUNDERSTORM WATCH 364 CONTINUES UNTIL
04Z...WITH CONTINUED THREAT FOR LARGE HAIL/DAMAGING WINDS OVER THE
NEXT FEW HOURS.

MOST VIGOROUS STORMS IN SEVERE WATCH 364 ARE OCCURRING EAST OF THE
RICHLAND/PASCO/KENNEWICK WA AREAS AS OF 0030Z. SMALL MCS WITH
HISTORY OF STRONG DAMAGING WINDS -- INCLUDING A MEASURED 73 MPH GUST
AT IRRIGON ORE...A 70 MPH GUST WEST OF HERMISTON ORE...AND A 61 MPH
GUST AT PASCO/TRI-CITIES WA -- CONTINUES TO RACE EASTWARD ACROSS
SOUTHEAST WA INTO AREAS NEAR/NORTH OF WALLA WALLA. GIVEN THE
ORGANIZATION OF THIS CLUSTER AND DOWNSTREAM WARM/MOIST AIRMASS...A
SEVERE THREAT FOR LIKELY PERSIST FOR THE NEXT HOUR OR TWO ACROSS FAR
SOUTHEAST WA AND THE SNAKE RIVER VALLEY.

ELSEWHERE...A MORE ISOLATED SEVERE THREAT EXISTS ACROSS WW 364 AND
ADJACENT PORTIONS OF ID INTO FAR WESTERN MT. 00Z BOISE RAOB IS
REPRESENTATIVE OF AROUND 900 J/KG MUCAPE IN PRESENCE OF MODERATE
VERTICAL SHEAR. WHILE ISOLATED SEVERE POTENTIAL MAY CONTINUE OVER
THE NEXT FEW HOURS...SEVERE POTENTIAL WILL LIKELY WANE WITH LOSS OF
DAYTIME HEATING. THUS WW 364 MAY ULTIMATELY BE CANCELLED PRIOR TO
THE SCHEDULED 04Z EXPIRATION.

..GUYER.. 05/20/2006

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

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

47041399 46021435 44571380 43801377 42991484 43551747
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