CHASE CASE 1

[Patrick Martin]

Waiting on the full 21z update, but the Cu field I've been seeing percolate off to my west has me getting antsy. Heading back west on hwy 18 to Mission SD. It'll be about 45 minutes or so to Mission, so should be able to stop and look over data when I get there and then decide if I need to continue west or head up toward I-90.

 

[Scott Weberpal]

Still sitting in Kadoka, SD, expecting initiation in the next hour or two.

 

[Matt Gingery]

URGENT - IMMEDIATE BROADCAST REQUESTED​

IN ADVANCE OF THE 21Z UPDATE THIS URGENT MESSAGE WAS PASSED ALONG. . .

TORNADO WATCH
NWS STORM PREDICTION CENTER NORMAN OK
235 PM CDT

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

CENTRAL AND SOUTHERN MINNESOTA
WESTERN WISCONSIN

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 235 PM UNTIL 900
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE MILES
EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF SAINT CLOUD
MINNESOTA TO 40 MILES EAST OF FAIRMONT MINNESOTA. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

 

[Ryan Wichman]

I'm out of play for the MN chase. I am blasting West to Merriman, NE. We'll see what happens with the next update to see where to head from there.

 

[Steve Polley]

Im out for the MN play also. Im still content here in Merriman, NE awaiting 21z data and watch some cu to my west.

 

[Jeff Duda]

I'll head to Valentine, NE now. It's only an hour and a half or so.

 

[Wes Carter]

I'm going to stick around Merriman, NE. I'll probably go up here on the hill by Cottonwood Lake and watch the sky and maybe pick up some data on my Verizon card. I am jamming to some tunes to pass time.

 

[Scott Hammel]

I'm heading back W on I-90 and can hopefully make it to Presho, SD by the time the 21z data comes out. I'll pull that data down on the road and try to adjust on the fly.

 

[Bob Hartig]

Think I'll join the wagon train west for Kadoka. Keeping my eye on those Cu's bubbling away and waiting on the radar. I'm in no rush, as I figure that at some point soon my target is going to define itself for me while I'm driving down I-90, and I like being a bit east of initiation.

 

[Corey Sloan]

Not willing to bite on my westward trek just yet...going to sit in Jordan Junction, SD until I get the latest data....but anxiously watching sky, vis sat imagery, radar imagery and surf obs...roadnetwork is ok here...I can slip north to I-90 or back over to Mission, SD and have an even better road network to work with....like Bob Hartig I want to be a tad east of initiation and think my final target will define itself fairly soon!!

 

[Michael O'Keeffe]

Going to head west some from Murdo over to Kadoka, SD.

 

[Matt Gingery]

21Z UPDATE​

VISIBLE SATELLITE

CONUS: http://i47.tinypic.com/mku96w.jpg

MIDWEST: http://i46.tinypic.com/2sbl891.jpg

S. PLAINS: http://i46.tinypic.com/34j3mds.jpg

N. PLAINS: http://i46.tinypic.com/2qusvts.jpg

SURFACE PLOTS

MIDWEST: http://i49.tinypic.com/2643qwx.gif

S PLAINS: http://i49.tinypic.com/dwetl0.gif

N PLAINS: http://i49.tinypic.com/2dmgx1f.gif

UPPER MIDWEST: http://i46.tinypic.com/2wnmtdt.gif

WIND PROFILER: http://i46.tinypic.com/sc6e10.gif

RADAR COMPOSITE

MIDWEST: http://i49.tinypic.com/5zh7p5.gif

N PLAINS: http://i48.tinypic.com/2sb0e14.gif

S PLAINS: http://i48.tinypic.com/6ibb09.gif

UPPER MIDWEST: http://i49.tinypic.com/66faqa.gif

MESOSCALE DISCUSSIONS

MD 1: http://i50.tinypic.com/2nqt7vb.gif

MESOSCALE DISCUSSION
NWS STORM PREDICTION CENTER NORMAN OK


AREAS AFFECTED...CENTRAL/NRN WY INTO FAR SRN/SERN MT

CONCERNING...SEVERE THUNDERSTORM WATCH 426...

VALID

THREAT FOR DAMAGING WINDS AND HAIL WILL CONTINUE ACROSS CENTRAL INTO
NRN-NERN WY AND SERN MT.

20Z SURFACE ANALYSIS INDICATED A LOW OVER CENTRAL WY...WITH STRONG
PRESSURE RISES CONTINUING TO DEVELOP/SPREAD INTO SRN WY IN THE WAKE
OF THE SURFACE LOW. SURFACE WINDS AIDED IN STRENGTH BY THIS
ISALLOBARIC COMPONENT WERE RANGING FROM 25-40 KT ACROSS SRN WY.
STRONG LARGE SCALE ASCENT AND DEEP LAYER SHEAR AHEAD OF THE SHORT
WAVE TROUGH WILL CONTINUE TO SUPPORT THUNDERSTORM DEVELOPMENT THIS
AFTERNOON INTO NRN-NERN WY AND SERN MT. MARGINAL INSTABILITY MAY
LIMIT SEVERE COVERAGE...BUT STEEP LOW-MID LEVEL LAPSE RATES SHOULD
CONTINUE TO RESULT IN DAMAGING WIND GUSTS AND HAIL WITH THE
STRONGEST ACTIVITY.

***TORNADO WARNING***

THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A

* TORNADO WARNING FOR...
BARRON COUNTY IN WEST CENTRAL WISCONSIN

* UNTIL 345 PM CDT

* AT 325 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
ALMENA OR 2 MILES EAST OF CLINTON...MOVING SOUTHEAST AT
25 MPH.

A LARGE TORNADO HAS BEEN WITNESSED ON THE GROUND BY LAW ENFORCEMENT AND NUMEROUS SPOTTERS.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CLINTON......TURTLE LAKE...AND ARLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN A MOBILE HOME OR VEHICLE...EVACUATE THEM AND GET INSIDE
A STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

WAYFARING: http://www.wayfaring.com/maps/show/60451

 

[James Hammett]

Gassed up the car and left Vivian, SD to resume my western trek on I-90. Keeping an eye on vis satellite for initiation. Keeping an eye out the window for the 1880 town. Hope this was all worth it...I think this is my third day in SD?

 

[James Hammett]

Just saw the 21Z radar. Decided not to stop at 1880 town in favor of blasting west to Kadoka, SD in time to head south on 73 for a possible intercept.

 

[Damon Scott Hynes]

Man, I don't like the T/Td spreads anywhere in Nebraska, and SD isn't much better. OTOH, I see some congestus starting up in E Nebr...I'll watch it from my front porch. (Which is 7 miles from Chalco, BTW.)