[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 271928
SWOMCD
SPC MCD 271927 
IAZ000-NEZ000-SDZ000-272130-

MESOSCALE DISCUSSION 1028
NWS STORM PREDICTION CENTER NORMAN OK
0227 PM CDT FRI MAY 27 2005

AREAS AFFECTED...NERN NEB...FAR SERN SD...AND WRN IA

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 271927Z - 272130Z

POTENTIAL EXISTS FOR ISOLATED DAMAGING WINDS WITH CONVECTIVE LINE
MOVING THROUGH NERN NEB...FAR SERN SD...AND INTO WRN IA THROUGH THIS
EVENING. AREA IS BEING MONITORED FOR POSSIBLE WW. 

AT 1915Z...WV IMAGERY CONTINUES TO SHOW A FAST MOVING VORT MAX
ROTATING SEWD ACROSS SERN SD/NERN NEB...AROUND PARENT UPPER LOW
CENTER LOCATED ACROSS NWRN MN AND SRN MANITOBA. SUSTAINED AXIS OF
UPWARD VERTICAL MOTION ASSOCIATED WITH THIS SHORTWAVE HAS RESULTED
IN A SHORT...LOW-TOPPED CONVECTIVE LINE FROM NEAR YKN TO 30W OFK.
REGION IS EMBEDDED IN STRONG CYCLONIC FLOW /40-50KT AT 500MB/
...RESULTING IN FAST LINE MOVEMENT OF 40-45KT. EXTRAPOLATION TAKES
ONGOING ACTIVITY ACROSS NWRN IA THORUGH 2130Z. 

INSTABILITY AND BOUNDARY LAYER MOISTURE WILL CONTINUE TO BE LOW
ACROSS THE DISCUSSION AREA...WITH SBCAPE VALUES OF ONLY AROUND 500
J/KG. DESPITE THIS...FAST LINE MOTION AND SURFACE DEWPOINT
DEPRESSIONS OF 35F SUGGEST AREAS OF SEVERE WIND GUSTS WILL BE
POSSIBLE ACROSS NERN NEB/FAR SERN SD/WRN IA WITH CONVECTIVE
DOWNDRAFTS WITH THIS LOW-TOPPED SYSTEM. GIVEN LARGE-SCALE
SUPPORT...PROSPECT OF DAMAGING WINDS WILL CONTINUE WITH LINE UNTIL
BOUNDARY LAYER STABILIZES AFTER SUNSET.

..BANACOS.. 05/27/2005

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

ATTN...WFO...DMX...FSD...OAX...

41959797 42459773 42989721 43469636 43379541 42979438
42289391 41349449 41139469 40999499 41019551 41059593
41569740 

WWWW