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Late April severe weather risk ~Mon thru next Mon 4/24-5/01


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21 minutes ago, 1900hurricane said:

The inflow in the giant Louisiana HP supercell looks like it is trying to ramp up.

Bulk shear on that supercell is not that great but it is moving into an area of very good helicity and has adequate CAPE.  Helicity values north and nw of there are astounding.

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What determines a Flash Flood Emergency with PDS wording?

 

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Springfield MO
1251 PM CDT SAT APR 29 2017

...FLASH FLOOD EMERGENCY FOR the city of Springfield...

The National Weather Service in Springfield has issued a

* Flash Flood Warning for...
  Southeastern Greene County in southwestern Missouri...

* Until 645 PM CDT

* At 1249 PM CDT, Doppler radar indicated heavy rain across the
  warned area. Up to three inches of rain has already fallen. Flash
  flooding is already occurring.  Additional moderate to heavy rain
  is expected to train over the city of Springfield through mid
  afternoon.

This is a FLASH FLOOD EMERGENCY for the city of Springfield. This is
a PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW!

* Creeks, streams, and low water crossings will be especially
  susceptible to the dangers of flash flooding.
  Locations in the warning include...
  Springfield...                    Battlefield...
  Strafford...                      Brookline...
  Galloway...                       Turners...
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Going to be difficult to get anything more than short-lived tornadogenesis with the cell in LA (or anywhere else for that matter) given the lack of venting flow aloft and precip-choked RFDs. Bulk shear is also very poor. All symptoms of the meridional orientation of the trough.

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42 minutes ago, Weatherdemon said:

What determines a Flash Flood Emergency with PDS wording?

Population usually (areas with higher population). Typically like a tornado emergency for flooding.

Nearing 4.25" here and nearly all of it was runoff because of saturated ground.  Some areas to the south probably have 9+" by now. I know they just shut down the city of Seneca and are having the MO Highway Patrol/National Guard rescue people and evacuate the town now. Neosho lost 2 water pumps and are on the backup towers now, people have had to be evacuated that experienced flooding. Pretty bad in this area.

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8 minutes ago, JoMo said:

Population usually (areas with higher population). Typically like a tornado emergency for flooding.

Nearing 4.25" here and nearly all of it was runoff because of saturated ground.  Some areas to the south probably have 9+" by now. I know they just shut down the city of Seneca and are having the MO Highway Patrol/National Guard rescue people and evacuate the town now. Neosho lost 2 water pumps and are on the backup towers now, people have had to be evacuated that experienced flooding. Pretty bad in this area.

 

Wow. That's scary!

Thanks for the info man!

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The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  Northeastern Sequoyah County in east central Oklahoma...
  South central Adair County in northeastern Oklahoma...

* Until 445 PM CDT
    
* At 419 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Sallisaw, moving northeast at 45 mph.

  HAZARD...Tornado and quarter size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations in or near the path include...
  Sallisaw...                       Short...
  Brushy...                         

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1 minute ago, jojo762 said:

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  Northeastern Sequoyah County in east central Oklahoma...
  South central Adair County in northeastern Oklahoma...

* Until 445 PM CDT
    
* At 419 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Sallisaw, moving northeast at 45 mph.

  HAZARD...Tornado and quarter size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations in or near the path include...
  Sallisaw...                       Short...
  Brushy...                         

 

ksrx_20170429_2118_BR_0.7.png

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