Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 113, NWS Norman, OK

April 11, 1991Pushmataha County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 11, 1991, 10:43 PM CDT for Pushmataha County, Oklahoma. It was in force for 47 min.

The area

The counties it named.

The facts

Issued: Apr 11, 1991, 10:43 PM CDT (03:43 UTC)
Expired: Apr 11, 1991, 11:30 PM CDT
In force: 47 min
Issued by: NWS Norman, OK
Area: Whole counties

County Pushmataha County, OK

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 00:00Z, 3.7 hours before the alert went out and 241 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 633 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 671 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 266 m²/s²
0-3 km storm-relative helicity: 418 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 11.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Apr 11, 7:16 PM CDT, 3 hours 27 minutes before

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Special weather statement, Apr 11, 8:37 PM CDT, 2 hours 6 minutes before

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Special weather statement, Apr 11, 8:40 PM CDT, 2 hours 3 minutes before

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Special weather statement, Apr 11, 9:10 PM CDT, 1 hour 33 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 7:45 PM CDT	Severe Thunderstorm Warning	OUN	Love	45 min
Apr 11, 8:50 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Murray	40 min
Apr 11, 9:25 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain, Pottawatomie	50 min
Apr 11, 10:01 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	44 min
Apr 11, 10:06 PM CDT	Severe Thunderstorm Warning	OUN	Choctaw	54 min
Apr 11, 10:29 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	46 min
Apr 12, 2:05 PM CDT	Severe Thunderstorm Warning	OUN	Blaine	25 min
Apr 12, 2:29 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Major	46 min
Apr 12, 2:34 PM CDT	Severe Thunderstorm Warning	OUN	Caddo	41 min
Apr 12, 3:13 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo	47 min
Apr 12, 3:17 PM CDT	Severe Thunderstorm Warning	OUN	Major	43 min
Apr 12, 3:39 PM CDT	Severe Thunderstorm Warning	OUN	Canadian	51 min
Apr 12, 3:43 PM CDT	Tornado Warning	OUN	Major	32 min
Apr 12, 3:48 PM CDT	Tornado Warning	OUN	Garfield	27 min
Apr 12, 4:02 PM CDT	Severe Thunderstorm Warning	OUN	Blaine	43 min
Apr 12, 4:15 PM CDT	Tornado Warning	OUN	Garfield	30 min
Apr 12, 4:24 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	51 min
Apr 12, 4:27 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Kiowa	48 min
Apr 12, 4:38 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	52 min
Apr 12, 4:43 PM CDT	Tornado Warning	OUN	Garfield, Grant	47 min
Apr 12, 4:46 PM CDT	Tornado Warning	OUN	Kingfisher	44 min
Apr 12, 5:15 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	60 min
Apr 12, 5:19 PM CDT	Tornado Warning	OUN	Kingfisher	41 min
Apr 12, 5:22 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love	68 min
Apr 12, 5:27 PM CDT	Tornado Warning	OUN	Grant	63 min
Apr 12, 6:04 PM CDT	Tornado Warning	OUN	Kingfisher	26 min
Apr 12, 6:06 PM CDT	Tornado Warning	OUN	Carter	39 min
Apr 12, 6:24 PM CDT	Tornado Warning	OUN	Kingfisher	36 min
Apr 12, 6:34 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	41 min
Apr 12, 6:45 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	60 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1991 Every severe thunderstorm warning in 1991

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.