[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 271935
SWOMCD
SPC MCD 271934 
IAZ000-NEZ000-SDZ000-272130-

MESOSCALE DISCUSSION 1029
NWS STORM PREDICTION CENTER NORMAN OK
0234 PM CDT FRI MAY 27 2005

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

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 271934Z - 272130Z

POTENTIAL EXISTS FOR ISOLATED DAMAGING WINDS WITH CONVECTIVE LINE
MOVING THROUGH NERN NEB...FAR SERN SD...AND INTO WRN/CENTRAL IA
THROUGH THIS EVENING. PORTIONS OF WRN/NWRN IA INTO CENTRAL IA 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.
VORT MAX IS EMBEDDED IN STRONG CYCLONIC FLOW /40-50KT AT 500MB/
...RESULTING IN FAST LINE MOVEMENT OF 40-45KT. EXTRAPOLATION TAKES
ONGOING ACTIVITY ACROSS NERN NEB AND WRN/NWRN IA THROUGH 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. 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 42409757 42829656 43199583 43169517 42729389
42179346 41079357 40979404 40819429 41019551 41059593
41569740 

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