MESO: Mesoscale Discussion 1888

ACUS11 KWNS 172144
SWOMCD
SPC MCD 172144
MTZ000-WYZ000-COZ000-UTZ000-IDZ000-172315-

MESOSCALE DISCUSSION 1888
NWS STORM PREDICTION CENTER NORMAN OK
0444 PM CDT TUE SEP 17 2013

AREAS AFFECTED...PARTS OF THE ERN GREAT BASIN AND CNTRL ROCKIES

CONCERNING...SEVERE THUNDERSTORM WATCH 526...

VALID 172144Z - 172315Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 526
CONTINUES.

SUMMARY...PRIMARY SHORT-TERM SEVERE THREAT IS ISOLATED SEVERE
HAIL/WIND. A BRIEF/WEAK TORNADO IS STILL POSSIBLE ALONG A
QUASI-STATIONARY FRONT ACROSS PARTS OF ERN ID INTO NRN WY.

DISCUSSION...SUPERCELL THAT EARLIER TRACKED OVER CLARK/FREMONT
COUNTIES WITH A COUPLE OF TORNADO REPORTS IN ERN ID HAS WEAKENED
SOMEWHAT AS IT PROGRESSED INTO A MORE STABLE AIR MASS N OF THE
QUASI-STATIONARY EMANATING NEWD FROM A SURFACE CYCLONE 30 W PIH.
WITH LARGE SURFACE DEW POINT DEPRESSIONS /FROM 30 TO 50 DEG F/
WITHIN THE WARM SECTOR...ANY TORNADO THREAT SHOULD BE RELEGATED TO
SUPERCELLS THAT CAN BE SUSTAINED ALONG THE FRONT WHICH EXTENDS EWD
ACROSS EXTREME NRN WY. ELSEWHERE...25-40 KT DEEP-LAYER SHEAR WILL
REMAIN FAVORABLE FOR MULTICELL AND TRANSIENT HIGH-BASED SUPERCELL
STRUCTURES CAPABLE OF ISOLATED SEVERE HAIL/WIND.

..GRAMS.. 09/17/2013

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

ATTN...WFO...UNR...CYS...BYZ...RIW...GJT...TFX...SLC...PIH...

LAT...LON 40120786 39530815 39130915 39131044 39421100 40541200
41251318 42281349 43241308 44481211 45071098 45370918
45340735 45170654 44970605 44400588 42540693 40120786

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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.