MESO: Mesoscale Discussion 1628

ACUS11 KWNS 031005
SWOMCD
SPC MCD 031005
MEZ000-031100-

MESOSCALE DISCUSSION 1628
NWS STORM PREDICTION CENTER NORMAN OK
0505 AM CDT FRI AUG 03 2007

AREAS AFFECTED...NRN ME

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 031005Z - 031100Z

POTENTIAL FOR MARGINALLY SEVERE HAIL AND PERHAPS ISOLATED DAMAGING
WIND GUSTS WILL EXIST WITH CLUSTER OF ELEVATED TSTMS MOVING ACROSS
THE REGION. A WW IS NOT ANTICIPATED.

AS OF 0950Z...REGIONAL RADAR IMAGERY INDICATED A CLUSTER OF ELEVATED
TSTMS APPROXIMATELY 100 W CAR OR ABOUT 10 MILES W OF THE
INTERNATIONAL BORDER MOVING 255/35-40KT. AMBIENT SURFACE CONDITIONS
ACROSS AROOSTOOK COUNTY ARE CHARACTERIZED BY TEMPERATURES AND
DEWPOINTS LARGELY IN THE 60S WITH LITTLE OR NO SURFACE-BASED
INSTABILITY. HOWEVER...RUC PROXIMITY SOUNDINGS DO SUGGEST THE
PRESENCE OF A RELATIVELY MOIST ENVIRONMENT IN THE 800-700 MB LAYER
WHICH IS CONTRIBUTING TO POCKETS OF MODEST INSTABILITY WITH MUCAPES
OF 500-1000 J/KG. VERTICAL SHEAR IS NOT PARTICULARLY
STRONG...THOUGH CORRESPONDING HODOGRAPHS INDICATE AROUND 30 KT DEEP
LAYER SPEED SHEAR...SUPPORTIVE OF SOME UPDRAFT ORGANIZATION.

SOME POTENTIAL FOR MARGINALLY SEVERE HAIL AND/OR LOCALLY STRONG WIND
GUSTS WILL EXIST WITH THIS CLUSTER AS IT MOVES ENEWD ACROSS THE
REGION THROUGH 12Z.

.MEAD.. 08/03/2007

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

ATTN...WFO...CAR...

46637002 47406929 47416901 47326831 47156796 46756790
46546915

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