Alert archive / Mississippi / Tornado Warnings in 1990
Tornado Warning 79, NWS Jackson, MS
NWS Jackson, MS issued this tornado warning at Dec 22, 1990, 1:28 PM CST for Forrest County, Mississippi. It was in force for 17 min.
The area
The counties it named.
The facts
- Issued
- Dec 22, 1990, 1:28 PM CST (19:28 UTC)
- Expired
- Dec 22, 1990, 1:45 PM CST
- In force
- 17 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Forrest County, MS
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.5 hours before the alert went out and 113 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
- 575 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 569 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 197 m²/s²
- 0-3 km storm-relative helicity
- 214 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 5.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAN 221930 TORJAN MSC035-221945- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE JACKSON MS 128 PM CST SAT DEC 22 1990 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 145 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST MISSISSIPPI ...NORTHERN FORREST COUNTY AT 130 PM A POSSIBLE TORNADO WAS OVER NORTHERN FORREEST COUNTY TO THE EAST OF SUMRALL. THE TORNADO WILL CROSS EXTREME NORTHERN FORREST COUNTY AND MOVE INTO SOUTHERN JONES COUNTY WITHIN THE NEXT 15 MINUTES. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS IN AN INTERIOR ROOM ON THE LOWEST FLOOR. GET UNDER STURDY FURNITURE. USE PILLOWS OR CUSHIONS TO COVER YOUR HEAD. <
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 21, 6:04 PM CST | Severe Thunderstorm Warning | JAN | Hinds, Yazoo | 56 min |
| Dec 21, 6:09 PM CST | Tornado Warning | JAN | Grenada, Montgomery | 51 min |
| Dec 21, 6:58 PM CST | Tornado Warning | JAN | Calhoun | 47 min |
| Dec 21, 7:05 PM CST | Flash Flood Warning | JAN | Leflore | 3 hr |
| Dec 21, 7:30 PM CST | Severe Thunderstorm Warning | JAN | Madison | 45 min |
| Dec 21, 7:58 PM CST | Severe Thunderstorm Warning | JAN | Attala, Leake | 32 min |
| Dec 21, 8:36 PM CST | Severe Thunderstorm Warning | JAN | Winston | 69 min |
| Dec 22, 12:58 AM CST | Severe Thunderstorm Warning | JAN | Warren | 32 min |
| Dec 22, 2:49 AM CST | Flash Flood Warning | JAN | Warren | 116 min |
| Dec 22, 4:33 AM CST | Severe Thunderstorm Warning | JAN | Neshoba | 27 min |
| Dec 22, 5:02 AM CST | Severe Thunderstorm Warning | JAN | Winston | 28 min |
| Dec 22, 10:05 AM CST | Severe Thunderstorm Warning | JAN | Simpson | 25 min |
| Dec 22, 10:42 AM CST | Tornado Warning | JAN | Simpson, Smith | 48 min |
| Dec 22, 10:50 AM CST | Severe Thunderstorm Warning | JAN | Newton | 55 min |
| Dec 22, 10:57 AM CST | Severe Thunderstorm Warning | JAN | Newton | 63 min |
| Dec 22, 11:26 AM CST | Severe Thunderstorm Warning | JAN | Neshoba | 64 min |
| Dec 22, 12:23 PM CST | Tornado Warning | JAN | Marion, Walthall | 37 min |
| Dec 22, 12:28 PM CST | Severe Thunderstorm Warning | JAN | Newton | 62 min |
| Dec 22, 12:39 PM CST | Tornado Warning | JAN | Lamar | 51 min |
| Dec 22, 12:57 PM CST | Tornado Warning | JAN | Forrest | 33 min |
| Dec 22, 1:13 PM CST | Tornado Warning | JAN | Jones | 62 min |
| Dec 22, 1:25 PM CST | Severe Thunderstorm Warning | JAN | Lauderdale | 35 min |
Nearby
Tornado Warnings in Mississippi, 1990Every tornado warning in 1990Tornadoes in 1990
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.