Severe Thunderstorm Warning 445, NWS Norman, OK

Issued

Aug 13, 2021, 3:23 PM CDT (20:23 UTC)

Expired

Aug 13, 2021, 4:15 PM CDT

In force

52 min

Issued by

NWS Norman, OK

Area

Storm-based polygon

Hail

1.0 in

Wind

60.0 mph

County Harmon County, OK

The Altus AFB radar (KFDR), 88 km from the middle of the area, began a volume at 20:23 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

381 
WUUS54 KOUN 132023
SVROUN
OKC057-132115-
/O.NEW.KOUN.SV.W.0445.210813T2023Z-210813T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
323 PM CDT Fri Aug 13 2021

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Southern Harmon County in southwestern Oklahoma...

* Until 415 PM CDT.

* At 322 PM CDT, a severe thunderstorm was located 4 miles east of
  Hollis, moving southeast at 5 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Hollis, Gould, McKnight and McQueen. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to 
localized flooding. Do not drive your vehicle through flooded 
roadways.

&&

LAT...LON 3478 9992 3480 9979 3473 9967 3456 9967
      3454 9987 3457 9992 3458 9993 3458 9996
      3471 9998
TIME...MOT...LOC 2022Z 331DEG 6KT 3470 9985 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

03

873 
WWUS54 KOUN 132048
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
348 PM CDT Fri Aug 13 2021

OKC057-132115-
/O.CON.KOUN.SV.W.0445.000000T0000Z-210813T2115Z/
Harmon OK-
348 PM CDT Fri Aug 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR SOUTHERN HARMON COUNTY...

At 347 PM CDT, a severe thunderstorm was located near Gould, moving
southeast at 5 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Surface observations have measured 60 to 65 mph winds with 
         this thunderstorm.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Hollis, Gould, McKnight and McQueen. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3478 9992 3480 9979 3473 9967 3456 9967
      3454 9987 3457 9992 3458 9993 3458 9996
      3471 9998
TIME...MOT...LOC 2047Z 311DEG 6KT 3467 9981 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

03

423 
WWUS54 KOUN 132105
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
405 PM CDT Fri Aug 13 2021

OKC057-132115-
/O.EXP.KOUN.SV.W.0445.000000T0000Z-210813T2115Z/
Harmon OK-
405 PM CDT Fri Aug 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HARMON COUNTY WILL
EXPIRE AT 415 PM CDT...
                 
The storm which prompted the warning has weakened below severe
limits, therefore the warning will be allowed to expire.  However
gusty winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3478 9992 3480 9979 3473 9967 3456 9967
      3454 9987 3457 9992 3458 9993 3458 9996
      3471 9998
TIME...MOT...LOC 2105Z 331DEG 6KT 3465 9980 

$$

03

Severe Thunderstorm Warnings in Oklahoma, 2021Every severe thunderstorm warning in 2021

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