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Severe Weather Risk tomorrow SW Missouri NW Arkansas


Jim Martin

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Looking at 18Z HRRR soundings from across E/SE/NE KS, do not expect storms to shoot off and immediately become tornadic...might take until 23-01Z for anything to really get going. Environment after 00Z becomes highly conducive to tornadoes. Biggest question is will storms still be discrete by then?

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60/40 probs

 The NWS Storm Prediction Center has issued a

   * Tornado Watch for portions of 
     Northeast Kansas
     Northwest and north-central Missouri
     Far southeast Nebraska

   * Effective this Monday afternoon and evening from 225 PM until
     1000 PM CST.

   * Primary threats include...
     A few tornadoes likely with a couple intense tornadoes possible
     Scattered large hail likely with isolated very large hail events
       to 2.5 inches in diameter possible
     Scattered damaging wind gusts to 70 mph likely

   SUMMARY...Scattered storms will develop early this evening and
   likely form into a fast-moving line moving east across the Lower
   Missouri Valley. Initial storms should have the greatest potential
   for tornadoes and large hail, transitioning to a predominant
   damaging wind threat over time.
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6 minutes ago, jojo762 said:

Looking at 18Z HRRR soundings from across E/SE/NE KS, do not expect storms to shoot off and immediately become tornadic...might take until 23-01Z for anything to really get going. Environment after 00Z becomes highly conducive to tornadoes. Biggest question is will storms still be discrete by then?

Dewpoints are going to have to improve substantially by then.

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Could the MODS add MN, IA, KS, and OK and put the date on the thread title?

Thanks!

 

I'm doing armchair chasing today, hope we see at least a couple good storms today. It's odd that we're seeing stronger severe events north of the Texas area this early in the season. I'm ready for something closer, I haven't been on a good chase in a couple of years.

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00Z windfields have steadily improved with each run.  This is now looking like a pretty potent setup for any discreet cells that go up north of I40 and south of I70.  

This is looking to be quite the potent early March system.  I wasn't particularly sold on it yesterday, expected the proverbial fly in the ointment...instead it's just slowly but steadily improved.  DPs aren't great but they're probably "good enough" given the windfields in place.

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17 minutes ago, andyhb said:

Dewpoints are going to have to improve substantially by then.

Not sure they will, only around 63 ish at the red river.  There's a nose pushing up from SE OK, it's not very wide but it's mid 60s if that reaches the OK/KS line it could create a narrow but significant svr threat wherever it sets up.

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1 hour ago, cstrunk said:

Could the MODS add MN, IA, KS, and OK and put the date on the thread title?

Thanks!

 

I'm doing armchair chasing today, hope we see at least a couple good storms today. It's odd that we're seeing stronger severe events north of the Texas area this early in the season. I'm ready for something closer, I haven't been on a good chase in a couple of years.

 

It's not to odd when you consider the severe probabilities for this time of year .  Most of what you're looking for usually comes around mid March -May

 

http://www.spc.noaa.gov/new/SVRclimo/climo.php?parm=anySvr

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ULLETIN - EAS ACTIVATION REQUESTED  
TORNADO WARNING  
NATIONAL WEATHER SERVICE DES MOINES IA  
413 PM CST MON MAR 6 2017  
  
THE NATIONAL WEATHER SERVICE IN DES MOINES  HAS ISSUED A  
  
* TORNADO WARNING FOR...  
  EASTERN EMMET COUNTY IN NORTHWESTERN IOWA...  
  NORTHWESTERN KOSSUTH COUNTY IN NORTH CENTRAL IOWA...  
  NORTHEASTERN PALO ALTO COUNTY IN NORTHWESTERN IOWA...  
  
* UNTIL 500 PM CST.  
  
* AT 413 PM CST, A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO  
  WAS LOCATED NEAR FIVE ISLAND LAKE, OR 8 MILES NORTHEAST OF  
  EMMETSBURG, MOVING NORTHEAST AT 60 MPH.  
  
  HAZARD...TORNADO AND PING PONG BALL SIZE HAIL.  

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Greetings from Joplin, MO. My first post.

I'm surprised no one's mentioned the cloud cover. Clouds dominate MO and the SE 1/4 of KS. Not a lot of breaks according to the 2145Z satellite picture. Hazy sunshine at best this PM in Joplin. Overcast now (4:45 pm). You guys know more about this than I do, but how much of a damper is the cloud cover likely to put on this situation?

 
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Interesting. In its Mesoscale Discussion at 2:50pm, the SPC said a Tornado watch was likely soon (95% probability) for much of SW MO, SE KS, NE OK & NW AR. Not only was the Tornado Watch not issued (yet, anyway), but the MD has disappeared from SPC's site. Since then, the action has begun in IA & MN. Stealing our thunder (literally)?

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