Alert archive / Oklahoma / Tornado Warnings in 1991

Tornado Warning 14, NWS Norman, OK

March 22, 1991Marshall County, Oklahoma

NWS Norman, OK issued this tornado warning at Mar 22, 1991, 1:49 AM CST for Marshall County, Oklahoma. It was in force for 26 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Mar 22, 1991, 1:49 AM CST (07:49 UTC)
Expired: Mar 22, 1991, 2:15 AM CST
In force: 26 min
Issued by: NWS Norman, OK
Area: Whole counties

County Marshall County, OK

What was reported inside it

Time	Report	Where	Remark
Mar 22, 2:21 AM CST	Hail 1.75	Marshall, OK

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 7.8 hours before the alert went out and 145 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: 2 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1767 m above ground
0-6 km bulk shear: 88 kt
0-1 km storm-relative helicity: -66 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

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 tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Mar 21, 10:02 PM CST, 3 hours 47 minutes before

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Special weather statement, Mar 21, 10:02 PM CST, 3 hours 47 minutes before

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Local storm report, Mar 21, 10:22 PM CST, 3 hours 27 minutes before

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Local storm report, Mar 21, 10:23 PM CST, 3 hours 26 minutes before

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Special weather statement, Mar 21, 11:04 PM CST, 2 hours 45 minutes before

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Special weather statement, Mar 21, 11:41 PM CST, 2 hours 8 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
Mar 21, 6:00 PM CST	Tornado Warning	OUN	Bryan	45 min
Mar 21, 6:03 PM CST	Severe Thunderstorm Warning	OUN	Jefferson, Love	42 min
Mar 21, 6:15 PM CST	Tornado Warning	OUN	Pushmataha	45 min
Mar 21, 6:19 PM CST	Severe Thunderstorm Warning	OUN	Carter, Johnston, Love, Marshall	56 min
Mar 21, 6:41 PM CST	Tornado Warning	OUN	Atoka, Bryan	49 min
Mar 21, 6:58 PM CST	Severe Thunderstorm Warning	OUN	Pushmataha	62 min
Mar 21, 7:07 PM CST	Severe Thunderstorm Warning	OUN	Bryan	68 min
Mar 21, 7:10 PM CST	Tornado Warning	OUN	Bryan	35 min
Mar 21, 7:15 PM CST	Severe Thunderstorm Warning	OUN	Johnston, Marshall	60 min
Mar 21, 7:15 PM CST	Severe Thunderstorm Warning	OUN	Love	60 min
Mar 21, 7:39 PM CST	Tornado Warning	OUN	Marshall	36 min
Mar 21, 7:52 PM CST	Tornado Warning	OUN	Bryan	23 min
Mar 21, 8:05 PM CST	Severe Thunderstorm Warning	OUN	Atoka, Pushmataha	55 min
Mar 21, 8:11 PM CST	Severe Thunderstorm Warning	OUN	Choctaw	64 min
Mar 21, 8:41 PM CST	Severe Thunderstorm Warning	OUN	Jefferson	64 min
Mar 21, 9:25 PM CST	Severe Thunderstorm Warning	OUN	Carter	65 min
Mar 21, 9:58 PM CST	Severe Thunderstorm Warning	OUN	Love	47 min
Mar 21, 10:30 PM CST	Severe Thunderstorm Warning	OUN	Carter, Johnston, Marshall	45 min
Mar 21, 11:01 PM CST	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc	59 min
Mar 21, 11:40 PM CST	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Johnston	65 min
Mar 22, 1:37 AM CST	Severe Thunderstorm Warning	OUN	Jefferson, Love	53 min
Mar 22, 1:44 AM CST	Severe Thunderstorm Warning	OUN	Marshall	61 min
Mar 22, 2:16 AM CST	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Johnston	59 min
Mar 22, 3:15 AM CST	Severe Thunderstorm Warning	OUN	Atoka	45 min
Mar 22, 6:51 AM CST	Severe Thunderstorm Warning	OUN	Choctaw, Pushmataha	69 min

Nearby

Tornado Warnings in Oklahoma, 1991 Every tornado warning in 1991 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.