Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 657, NWS Norman, OK

June 14, 2008Bryan County, Johnston County, Marshall County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 14, 2008, 5:13 AM CDT for Bryan County, Johnston County, Marshall County, Oklahoma. It was in force for 32 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
Jun 14, 2008, 5:13 AM CDT (10:13 UTC)
Expired
Jun 14, 2008, 5:45 AM CDT
In force
32 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

Counties Bryan County, OK, Johnston County, OK, Marshall County, OK

The radar

The Norman radar (KTLX), 152 km from the middle of the area, began a volume at 10:13 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, 10.2 hours before the alert went out and 146 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 2008-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3519 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 2008-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 230 square meters per square second.19395878Sfc1 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
3519 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
824 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
230 m²/s²
0-3 km storm-relative helicity
373 m²/s²
Significant tornado parameter
5.7
Supercell composite
30.7

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 Jun 14, 3:18 AM CDT, 1 hour 55 minutes earlier.

Area forecast discussion, Jun 14, 3:18 AM CDT, 1 hour 55 minutes before
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In the hours before

Special weather statement, Jun 14, 1:16 AM CDT, 3 hours 57 minutes before
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Special weather statement, Jun 14, 2:29 AM CDT, 2 hours 44 minutes before
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Special weather statement, Jun 14, 3:40 AM CDT, 1 hour 33 minutes before
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Special weather statement, Jun 14, 4:31 AM CDT, 42 minutes before
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Special weather statement, Jun 14, 4:46 AM CDT, 27 minutes before
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Special weather statement, Jun 14, 4:51 AM CDT, 22 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 9:19 PM CDTSevere Thunderstorm WarningOUNCleveland, Oklahoma41 min
Jun 13, 10:07 PM CDTSevere Thunderstorm WarningOUNCleveland, Oklahoma38 min
Jun 13, 10:29 PM CDTSevere Thunderstorm WarningOUNCaddo, Canadian, Grady46 min
Jun 13, 10:33 PM CDTSevere Thunderstorm WarningOUNCaddo42 min
Jun 13, 10:42 PM CDTSevere Thunderstorm WarningOUNCleveland48 min
Jun 13, 11:08 PM CDTAreal Flood AdvisoryOUNCleveland, Oklahoma3 hr
Jun 13, 11:08 PM CDTSevere Thunderstorm WarningOUNCanadian, Cleveland, Grady, McClain52 min
Jun 13, 11:16 PM CDTSevere Thunderstorm WarningOUNCaddo, Grady44 min
Jun 13, 11:35 PM CDTSevere Thunderstorm WarningOUNCaddo, Grady40 min
Jun 13, 11:54 PM CDTSevere Thunderstorm WarningOUNCleveland, McClain51 min
Jun 14, 12:08 AM CDTSevere Thunderstorm WarningOUNCaddo, Grady52 min
Jun 14, 12:21 AM CDTAreal Flood AdvisoryOUNCaddo, Grady3 hr
Jun 14, 12:33 AM CDTSevere Thunderstorm WarningOUNSeminole42 min
Jun 14, 12:35 AM CDTSevere Thunderstorm WarningOUNCleveland, McClain10 min
Jun 14, 12:43 AM CDTSevere Thunderstorm WarningOUNCleveland, McClain, Pontotoc, Pottawatomie47 min
Jun 14, 1:16 AM CDTSevere Thunderstorm WarningOUNGrady, McClain44 min
Jun 14, 1:41 AM CDTSevere Thunderstorm WarningOUNGarvin, Grady49 min
Jun 14, 1:45 AM CDTSevere Thunderstorm WarningOUNCleveland, Pottawatomie32 min
Jun 14, 2:09 AM CDTSevere Thunderstorm WarningOUNMcClain, Pontotoc, Pottawatomie36 min
Jun 14, 2:35 AM CDTSevere Thunderstorm WarningOUNGarvin, Murray40 min
Jun 14, 2:39 AM CDTSevere Thunderstorm WarningOUNPontotoc, Seminole51 min
Jun 14, 3:15 AM CDTSevere Thunderstorm WarningOUNGarvin45 min
Jun 14, 4:48 AM CDTSevere Thunderstorm WarningOUNJohnston27 min
Jun 14, 5:47 AM CDTSevere Thunderstorm WarningOUNAtoka, Bryan28 min
Jun 14, 6:16 AM CDTSevere Thunderstorm WarningOUNBryan29 min
Jun 14, 6:54 AM CDTRiver Flood WarningOUNPottawatomie, Seminole7 hr
Jun 13, 8:43 PM CDTSevere Thunderstorm WarningOUNFoard, Wilbarger47 min
Jun 13, 9:09 PM CDTSevere Thunderstorm WarningOUNBaylor, Foard, Knox51 min
Jun 13, 9:55 PM CDTSevere Thunderstorm WarningOUNKnox50 min
Jun 13, 10:27 PM CDTSevere Thunderstorm WarningOUNKnox48 min
Jun 14, 4:33 PM CDTSevere Thunderstorm WarningOUNWichita42 min
Jun 14, 5:03 PM CDTSevere Thunderstorm WarningOUNClay42 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2008Every severe thunderstorm warning in 2008

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.