Alert archive / Arkansas / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 37, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Mar 22, 1991, 1:28 AM CST for Sequoyah County, Oklahoma; Crawford County, Sebastian County, Arkansas. It was in force for 32 min.
The area
The counties it named.
The facts
- Issued
- Mar 22, 1991, 1:28 AM CST (07:28 UTC)
- Expired
- Mar 22, 1991, 2:00 AM CST
- In force
- 32 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Crawford County, AR, Sebastian County, AR, Sequoyah County, OK
The nearest sounding before it
Springfield, MO (KUMN), launched 00:00Z, 7.5 hours before the alert went out and 173 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.
- Mixed-layer CAPE
- 1100 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 1075 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 264 m²/s²
- 0-3 km storm-relative helicity
- 317 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 6.0
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, Mar 22, 12:52 AM CST, 36 minutes before
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</html>The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 6:57 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Muskogee | 48 min |
| Mar 21, 7:07 PM CST | Tornado Warning | TSA | LeFlore | 68 min |
| Mar 21, 7:09 PM CST | Tornado Warning | TSA | Haskell | 36 min |
| Mar 21, 7:33 PM CST | Severe Thunderstorm Warning | TSA | LeFlore, Sequoyah | 57 min |
| Mar 21, 7:44 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 61 min |
| Mar 21, 8:45 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 60 min |
| Mar 21, 11:36 PM CST | Severe Thunderstorm Warning | TSA | Pittsburg | 54 min |
| Mar 22, 12:20 AM CST | Severe Thunderstorm Warning | TSA | Sequoyah | 55 min |
| Mar 22, 1:12 AM CST | Severe Thunderstorm Warning | TSA | LeFlore | 63 min |
| Mar 22, 3:23 AM CST | Severe Thunderstorm Warning | TSA | Pittsburg | 52 min |
| Mar 22, 7:35 AM CST | Severe Thunderstorm Warning | TSA | Latimer | 40 min |
| Mar 22, 7:57 AM CST | Severe Thunderstorm Warning | TSA | Haskell | 48 min |
| Mar 22, 8:12 AM CST | Severe Thunderstorm Warning | TSA | LeFlore | 56 min |
| Mar 21, 6:47 PM CST | Severe Thunderstorm Warning | TSA | Washington | 58 min |
| Mar 21, 8:06 PM CST | Severe Thunderstorm Warning | TSA | Scott, Sebastian | 69 min |
| Mar 21, 8:26 PM CST | Severe Thunderstorm Warning | TSA | Crawford | 64 min |
| Mar 21, 8:47 PM CST | Severe Thunderstorm Warning | TSA | Franklin | 58 min |
| Mar 21, 9:03 PM CST | Severe Thunderstorm Warning | TSA | Logan, Polk, Scott, Sebastian | 57 min |
| Mar 21, 9:25 PM CST | Severe Thunderstorm Warning | TSA | Johnson | 65 min |
| Mar 21, 9:58 PM CST | Severe Thunderstorm Warning | TSA | Johnson, Logan | 62 min |
| Mar 21, 9:58 PM CST | Severe Thunderstorm Warning | TSA | Polk, Scott | 62 min |
| Mar 22, 12:57 AM CST | Severe Thunderstorm Warning | TSA | Crawford, Washington | 63 min |
| Mar 22, 8:07 AM CST | Severe Thunderstorm Warning | TSA | Washington | 61 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 1991Severe Thunderstorm Warnings in Oklahoma, 1991Every 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.