Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 532, NWS Norman, OK

July 16, 20094 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 16, 2009, 12:10 AM CDT for 4 counties in Oklahoma. It was in force for 65 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 16, 2009, 12:10 AM CDT (05:10 UTC)
Expired
Jul 16, 2009, 1:15 AM CDT
In force
65 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

Counties Garfield County, OK, Grant County, OK, Kay County, OK, Noble County, OK

The radar

The Vance AFB radar (KVNX), 59 km from the middle of the area, began a volume at 05:11 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

Lamont, OK (KLMN), launched 00:00Z, 5.2 hours before the alert went out and 3 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, Lamont, OK at 00:00Z on 2009-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1251 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, Lamont, OK at 00:00Z on 2009-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 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
1251 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
2067 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
220 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.2

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 16, 12:08 AM CDT, 2 minutes earlier.

Area forecast discussion, Jul 16, 12:08 AM CDT, 2 minutes before
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Hazardous weather outlook, Jul 15, 9:00 PM CDT, 3 hours 10 minutes before
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In the hours before

Special weather statement, Jul 15, 9:55 PM CDT, 2 hours 15 minutes before
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Special weather statement, Jul 15, 10:06 PM CDT, 2 hours 4 minutes before
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Local storm report, Jul 15, 10:53 PM CDT, 1 hour 17 minutes before
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Special weather statement, Jul 15, 11:01 PM CDT, 1 hour 9 minutes before
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Local storm report, Jul 15, 11:23 PM CDT, 47 minutes before
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Local storm report, Jul 16, 12:03 AM CDT, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 10:22 PM CDTSevere Thunderstorm WarningOUNPayne35 min
Jul 15, 11:31 PM CDTSevere Thunderstorm WarningOUNGrant, Kay59 min
Jul 15, 11:40 PM CDTAreal Flood AdvisoryOUNEllis3 hr
Jul 16, 12:58 AM CDTAreal Flood AdvisoryOUNKay4 hr
Jul 16, 1:11 AM CDTSevere Thunderstorm WarningOUNLincoln, Noble, Payne64 min
Jul 16, 3:31 PM CDTSevere Thunderstorm WarningOUNKingfisher, Logan59 min
Jul 16, 3:43 PM CDTSevere Thunderstorm WarningOUNCarter, Jefferson, Love62 min
Jul 16, 4:23 PM CDTSevere Thunderstorm WarningOUNOklahoma52 min
Jul 16, 4:27 PM CDTSevere Thunderstorm WarningOUNJefferson, Love63 min
Jul 16, 4:43 PM CDTSevere Thunderstorm WarningOUNCarter, Murray38 min
Jul 16, 4:46 PM CDTSevere Thunderstorm WarningOUNHughes, Seminole37 min
Jul 16, 4:47 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal, Johnston58 min
Jul 16, 4:56 PM CDTSevere Thunderstorm WarningOUNCleveland64 min
Jul 16, 5:09 PM CDTSevere Thunderstorm WarningOUNOklahoma36 min
Jul 16, 5:27 PM CDTSevere Thunderstorm WarningOUNCuster, Washita48 min
Jul 16, 5:33 PM CDTSevere Thunderstorm WarningOUNCleveland, Pottawatomie34 min
Jul 16, 6:12 PM CDTSevere Thunderstorm WarningOUNCuster, Washita48 min
Jul 16, 6:35 PM CDTSevere Thunderstorm WarningOUNKiowa, Washita40 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2009Every severe thunderstorm warning in 2009

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.