Alert archive / Mississippi / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 39, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Apr 4, 1989, 6:30 AM CDT for Lowndes County, Mississippi. It was in force for 90 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
- Apr 4, 1989, 6:30 AM CDT (11:30 UTC)
- Expired
- Apr 4, 1989, 8:00 AM CDT
- In force
- 90 min
- Issued by
- NWS Memphis, TN
- Area
- Whole counties
County Lowndes County, MS
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 4, 7:40 AM CDT | Thunderstorm Wind 0 | Lowndes, MS |
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
Centreville/Bibb, AL (KCKL), launched 00:00Z, 11.5 hours before the alert went out and 132 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
- 693 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 1133 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 227 m²/s²
- 0-3 km storm-relative helicity
- 336 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 13.5
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 4, 12:44 AM CDT, 5 hours 46 minutes before
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</html>Special weather statement, Apr 4, 1:36 AM CDT, 4 hours 54 minutes before
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</html>Special weather statement, Apr 4, 2:56 AM CDT, 3 hours 34 minutes before
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</html>The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 1:05 AM CDT | Severe Thunderstorm Warning | MEG | Marshall | 40 min |
| Apr 4, 2:10 AM CDT | Severe Thunderstorm Warning | MEG | Lee | 30 min |
| Apr 4, 5:23 AM CDT | Severe Thunderstorm Warning | MEG | Oktibbeha | 107 min |
| Apr 4, 8:05 AM CDT | Severe Thunderstorm Warning | MEG | Pontotoc | 55 min |
| Apr 3, 9:52 PM CDT | Tornado Warning | MEG | Lauderdale | 38 min |
| Apr 3, 10:08 PM CDT | Tornado Warning | MEG | Lauderdale, Tipton | 37 min |
| Apr 3, 10:28 PM CDT | Tornado Warning | MEG | Haywood | 32 min |
| Apr 3, 10:39 PM CDT | Severe Thunderstorm Warning | MEG | Shelby | 51 min |
| Apr 3, 10:39 PM CDT | Severe Thunderstorm Warning | MEG | Madison | 51 min |
| Apr 3, 10:46 PM CDT | Severe Thunderstorm Warning | MEG | Fayette | 44 min |
| Apr 3, 10:52 PM CDT | Severe Thunderstorm Warning | MEG | Hardeman | 53 min |
| Apr 3, 11:04 PM CDT | Severe Thunderstorm Warning | MEG | Carroll | 41 min |
| Apr 3, 11:11 PM CDT | Severe Thunderstorm Warning | MEG | Henderson | 49 min |
| Apr 3, 11:15 PM CDT | Severe Thunderstorm Warning | MEG | Chester | 45 min |
| Apr 3, 11:22 PM CDT | Severe Thunderstorm Warning | MEG | Shelby | 53 min |
| Apr 3, 11:30 PM CDT | Severe Thunderstorm Warning | MEG | Decatur, Hardin | 45 min |
| Apr 3, 11:37 PM CDT | Severe Thunderstorm Warning | MEG | Benton | 53 min |
| Apr 3, 8:16 PM CDT | Tornado Warning | MEG | Craighead, Poinsett | 29 min |
| Apr 3, 8:42 PM CDT | Severe Thunderstorm Warning | MEG | Poinsett | 33 min |
| Apr 3, 8:48 PM CDT | Tornado Warning | MEG | Craighead | 27 min |
| Apr 3, 9:10 PM CDT | Tornado Warning | MEG | Mississippi | 35 min |
| Apr 3, 9:34 PM CDT | Tornado Warning | MEG | Cross | 26 min |
| Apr 3, 9:37 PM CDT | Tornado Warning | MEG | Poinsett | 38 min |
| Apr 3, 9:49 PM CDT | Tornado Warning | MEG | Mississippi | 26 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 1989Every severe thunderstorm warning in 1989
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.