Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 594, NWS Norman, OK

July 26, 2013Comanche County, Cotton County, Stephens County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 26, 2013, 3:33 AM CDT for Comanche County, Cotton County, Stephens County, Oklahoma. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 26, 2013, 3:33 AM CDT (08:33 UTC)
Expired
Jul 26, 2013, 4:15 AM CDT
In force
42 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

Counties Comanche County, OK, Cotton County, OK, Stephens County, OK

The radar

The Altus AFB radar (KFDR), 70 km from the middle of the area, began a volume at 08:34 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.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 8.6 hours before the alert went out and 112 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2013-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 371 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2013-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
371 J/kg
Mixed-layer CIN
-225 J/kg
Mixed-layer LCL
1556 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 26, 3:27 AM CDT, 6 minutes earlier.

Area forecast discussion, Jul 26, 3:27 AM CDT, 6 minutes before
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Hazardous weather outlook, Jul 26, 1:25 AM CDT, 2 hours 8 minutes before
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In the hours before

Special weather statement, Jul 26, 1:13 AM CDT, 2 hours 20 minutes before
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Special weather statement, Jul 26, 1:39 AM CDT, 1 hour 54 minutes before
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Special weather statement, Jul 26, 2:12 AM CDT, 1 hour 21 minutes before
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Special weather statement, Jul 26, 2:53 AM CDT, 40 minutes before
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Special weather statement, Jul 26, 3:18 AM CDT, 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
318 AM CDT FRI JUL 26 2013

OKZ038-039-044-260900-
COTTON OK-STEPHENS OK-COMANCHE OK-
318 AM CDT FRI JUL 26 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN COTTON...WESTERN
STEPHENS AND COMANCHE COUNTIES UNTIL 400 AM CDT...

AT 315 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR GERONIMO...
MOVING SOUTHEAST AT 35 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH...
NICKEL SIZE HAIL...
VERY HEAVY RAINFALL WHICH MAY LEAD TO FLOODING IN LOCALIZED AREAS...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
LAWTON...WALTERS...TEMPLE...GERONIMO...FORT SILL AND HULEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

&&

LAT...LON 3455 9863 3470 9834 3448 9800 3422 9828
TIME...MOT...LOC 0815Z 304DEG 30KT 3451 9842

AUSTIN
Local storm report, Jul 26, 3:33 AM CDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
333 AM CDT FRI JUL 26 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0321 AM     TSTM WND GST     LAWTON                  34.60N 98.42W
07/26/2013  M62 MPH          COMANCHE           OK   ASOS

&&

MBS

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 25, 9:19 PM CDTSpecial Weather StatementOUNCuster41 min
Jul 25, 10:45 PM CDTSpecial Weather StatementOUNCuster45 min
Jul 25, 10:50 PM CDTSpecial Weather StatementOUNWoods25 min
Jul 25, 11:10 PM CDTAreal Flood AdvisoryOUNBlaine, Caddo, Custer, Washita3 hr
Jul 25, 11:23 PM CDTSpecial Weather StatementOUNCuster22 min
Jul 25, 11:26 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Custer, Washita49 min
Jul 26, 12:16 AM CDTSpecial Weather StatementOUNCaddo29 min
Jul 26, 12:27 AM CDTAreal Flood AdvisoryOUNCaddo, Canadian3 hr
Jul 26, 12:53 AM CDTSpecial Weather StatementOUNKiowa37 min
Jul 26, 1:09 AM CDTSevere Thunderstorm WarningOUNCaddo, Comanche51 min
Jul 26, 1:11 AM CDTSevere Thunderstorm WarningOUNKiowa49 min
Jul 26, 1:13 AM CDTSpecial Weather StatementOUNWoodward47 min
Jul 26, 1:39 AM CDTSpecial Weather StatementOUNDewey51 min
Jul 26, 2:03 AM CDTAreal Flood AdvisoryOUNCaddo, Comanche3 hr
Jul 26, 2:12 AM CDTSpecial Weather StatementOUNComanche48 min
Jul 26, 2:53 AM CDTSpecial Weather StatementOUNBlaine, Dewey, Kingfisher37 min
Jul 26, 3:18 AM CDTSpecial Weather StatementOUNCotton42 min
Jul 26, 3:27 AM CDTAreal Flood AdvisoryOUNBlaine, Caddo, Canadian, Custer, Washita4 hr
Jul 26, 3:35 AM CDTSpecial Weather StatementOUNCanadian40 min
Jul 26, 3:57 AM CDTAreal Flood AdvisoryOUNCaddo, Comanche, Cotton, Kiowa, Stephens3 hr
Jul 26, 4:03 AM CDTFlash Flood WarningOUNComanche, Cotton3 hr
Jul 26, 4:10 AM CDTAreal Flood AdvisoryOUNBlaine, Canadian, Custer, Dewey, Garfield, Kingfisher and 1 more3 hr
Jul 26, 4:13 AM CDTSevere Thunderstorm WarningOUNCotton, Jefferson, Stephens47 min
Jul 26, 4:18 AM CDTSpecial Weather StatementOUNCaddo, Canadian, Grady, Washita42 min
Jul 26, 4:54 AM CDTAreal Flood AdvisoryOUNCaddo, Canadian, Cleveland, Grady, Kingfisher, Logan and 2 more3 hr
Jul 26, 5:00 AM CDTFlash Flood WarningOUNCotton, Jefferson, Stephens3 hr
Jul 26, 5:04 AM CDTSpecial Weather StatementOUNComanche41 min
Jul 26, 5:28 AM CDTFlash Flood WarningOUNCanadian, Cleveland, Grady, Kingfisher, Logan, McClain and 2 more3 hr
Jul 26, 5:35 AM CDTFlash Flood WarningOUNCaddo, Comanche, Kiowa115 min
Jul 26, 5:53 AM CDTAreal Flood AdvisoryOUNJefferson112 min
Jul 26, 6:10 AM CDTAreal Flood AdvisoryOUNComanche, Kiowa, Tillman, Washita2 hr
Jul 26, 6:17 AM CDTFlash Flood WarningOUNCleveland, Garvin, Grady, McClain3 hr
Jul 26, 6:54 AM CDTFlash Flood WarningOUNCaddo, Comanche, Cotton, Kiowa, Tillman3 hr
Jul 26, 7:11 AM CDTFlash Flood WarningOUNCleveland, Garvin, McClain, Oklahoma, Pontotoc, Pottawatomie and 1 more3 hr
Jul 26, 7:58 AM CDTAreal Flood AdvisoryOUNCotton, Jefferson, Stephens2 hr
Jul 26, 8:07 AM CDTRiver Flood WarningOUNPottawatomie, Seminole23 hr
Jul 26, 8:08 AM CDTAreal Flood WarningOUNCaddo112 min
Jul 26, 8:10 AM CDTRiver Flood WarningOUNComanche, Cotton48 hr
Jul 26, 8:29 AM CDTAreal Flood WarningOUNCanadian, Cleveland, Grady, McClain, Oklahoma2 hr
Jul 26, 10:58 AM CDTAreal Flood AdvisoryOUNCleveland, McClain2 hr
Jul 26, 1:58 PM CDTRiver Flood WarningOUNOklahoma6 hr
Jul 26, 3:25 PM CDTRiver Flood WarningOUNBlaine, Caddo, Canadian, Custer11 hr
Jul 26, 4:03 PM CDTSpecial Weather StatementOUNBryan57 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2013Every severe thunderstorm warning in 2013

Sources

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.