Tornado Warning 20, NWS Des Moines, IA

Issued

Jun 20, 2018, 2:46 PM CDT (19:46 UTC)

Expired

Jun 20, 2018, 3:03 PM CDT

In force

17 min

Issued by

NWS Des Moines, IA

Area

Storm-based polygon

Tornado

Radar indicated

Hail

0.75 in

Counties Calhoun County, IA, Greene County, IA

The Des Moines radar (KDMX), 84 km from the middle of the area, began a volume at 19:50 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

250 
WFUS53 KDMX 201946
TORDMX
IAC025-073-202015-
/O.NEW.KDMX.TO.W.0020.180620T1946Z-180620T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
246 PM CDT WED JUN 20 2018

The National Weather Service in Des Moines  has issued a

* Tornado Warning for...
  Northwestern Greene County in west central Iowa...
  Southeastern Calhoun County in west central Iowa...

* Until 315 PM CDT.
    
* At 246 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 9 miles northeast of Glidden, or 12 miles northwest of
  Jefferson, moving north at 15 mph.

  HAZARD...Tornado.

  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.

* This tornadic thunderstorm will remain over mainly rural areas of
  northwestern Greene and southeastern Calhoun Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4211 9452 4211 9461 4225 9463 4226 9447
TIME...MOT...LOC 1946Z 174DEG 11KT 4214 9456 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Donavon

682 
WWUS53 KDMX 202003
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
303 PM CDT WED JUN 20 2018

IAC025-073-202013-
/O.CAN.KDMX.TO.W.0020.000000T0000Z-180620T2015Z/
Greene IA-Calhoun IA-
303 PM CDT WED JUN 20 2018

...THE TORNADO WARNING FOR NORTHWESTERN GREENE AND SOUTHEASTERN
CALHOUN COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 700 PM CDT for west central
Iowa.

LAT...LON 4211 9452 4211 9461 4225 9463 4226 9447
TIME...MOT...LOC 2000Z 174DEG 11KT 4219 9457 

$$

Donavon

Tornado Warnings in Iowa, 2018Every tornado warning in 2018Tornadoes in 2018

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.