Alert archive / Mississippi / Tornado Warnings in 1990
Tornado Warning 81, NWS Jackson, MS
NWS Jackson, MS issued this tornado warning at Dec 30, 1990, 3:37 PM CST for Scott County, Smith County, Mississippi. It was in force for 38 min.
The area
The counties it named.
The facts
- Issued
- Dec 30, 1990, 3:37 PM CST (21:37 UTC)
- Expired
- Dec 30, 1990, 4:15 PM CST
- In force
- 38 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Scott County, MS, Smith 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
Jackson, MS (KJAN), launched 12:00Z, 9.6 hours before the alert went out and 54 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
- 335 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 618 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 235 m²/s²
- 0-3 km storm-relative helicity
- 296 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAN 302139 TORJAN MSC123-129-302215- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE JACKSON MS 337 PM CST SUN DEC 30 1990 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 415 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL MISSISSIPPI ...SCOTT COUNTY...NORTHERN SMITH COUNTY AT 335PM AN INTENSIFYING THUNDERSTORM WITH A POSSIBLE TORNADO WAS DETECTED ABOUT 5 MILES NORTHWEST OF RALEIGH MOVING NORTHEAST AT 45 MILES AN HOUR. THIS STORM COULD AFFECT THE TOWNS OF LAKE AND FOREST DURING THE NEXT 30 MINUTES. DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. IF YOU ARE IN THE PATH OF A TORNADO...LEAVE THE CAR AND GO TO AO STRONG BUILDING. IF NO STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT. <
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
Special weather statement, Dec 30, 12:06 PM CST, 3 hours 31 minutes before
MSZALL-302300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 1205 PM CST SUN DEC 30 1990 ...STRONG GUSTY WINDS OCCURRING ACROSS CENTRAL AND SOUTH MISSISSIPPI... AN ARCTIC COLD FRONT HAS ENTERED NORTHWEST MISSISSIPPI. A TELEVISION WEATHER BROADCASTER IN GREENVILLE REPORTED A TEMPERATURE DROP OF 25 DEGREES...FROM 70 TO 45...BETWEEN 11 AND 1130 AM. OUT AHEAD OF THE FRONT...SOUTHERLY WINDS WERE BECOMING RATHER GUSTY. WIND GUSTS BETWEEN 30 AND 35 MPH HAVE BEEN OBSERVED AT GREENWOOD AND IN JACKSON. THESE WINDS ARE NOT ASSOCIATED WITH THUNDERSTORMS BUT ARE BEING CAUSED BY THE STRONG COLD FRONT IN NORTHWEST MISSISSIPPI. THE WINDS MAY BE BRIEFLY STRONG ENOUGH TO DOWN A FEW TREE LIMBS. ONCE THE FRONT PASSES YOUR AREA...THE WINDS SHIFT AROUND TO NORTH BUT ARE NOT AS GUSTY...GENERALLY BETWEEN 10 AND 20 MPH. THE FRONT SHOULD ARRIVE IN GREENWOOD BY 2 PM..AND IN THE JACKSON AREA AROUND SUNSET.
Special weather statement, Dec 30, 1:04 PM CST, 2 hours 33 minutes before
MSZ003-006>011-302000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 100 PM CST SUN DEC 30 1990 THUNDERSTORMS INCREASING IN INTENSITY ACROSS CENTRAL MISSISSIPPI. AT 1 PM CST...A BAND OF SHOWERS AND THUNDERSTORMS HAVE FORMED OUT AHEAD OF THE ARCTIC FRONT WHICH WAS IN NORTHWEST MISSISSIPPI. THE STRNOGEST STORMS WERE OCCURRING SOUTH OF GREENWOOD FROM LEXINGTON TO YAZOO CITY...AND IN NORTHEAST LOUISIANA ABOUT 20 MILES SOUTHWEST OF VICKSBURG. THE STORMS WERE MOVING RAPIDLY NORTHEAST. THE STORMS WILL BE ACCOMPANIED BY HEAVY RAIN AND STRONG GUSTY WINDS. SOME GUST COULD BE AS HIGH AS 45 MILES AN HOUR. THE AIRMASS ACROSS CENTRAL AND SOUTH MISSISSIPPI AS BECOME RATHER UNSTABLE DURING THE COURSE OF THE DAY. IT IS POSSIBLE THAT A FEW OF THESE STORMS COULD BECOME BRIEFLY SEVERE. PERSONS ACROSS CENTRAL AND SOUTH MISSISSIPPI NEED TO STAY TUNED TO THEIR LOCAL TV..RADIO..OR NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION.
Special weather statement, Dec 30, 3:37 PM CST, 0 minutes before
MSZALL-310000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 330 PM CST SUN DEC 30 1990 ...MUCH COLDER AIR MOVING INTO MISSISSIPPI... AT 300 PM A STRONG ARCTIC COLD FRONT EXTENDED ACROSS MISSISSIPPI NEAR A COLUMBUS TO MCCOMB LINE. THE FRONT WAS MOVING TO THE EAST AT 15 TO 20 MPH...AND SHOULD MOVE WELL CLEAR OF THE STATE BEFORE MIDNIGHT. STRONG GUSTY WINDS WILL ACCOMPANY THE FRONT AS IT MOVES ACROSS THE REST OF THE STATE...AND TEMPERATURES DROP SHARPLY AFTER THE FRONT PASSES. AT 300 PM TEMPERATURES WERE IN THE 70 TO 75 DEGREE RANGE AHEAD OF THE FRONT...AND MOSTLY IN THE 40S BEHIND THE FRONT. READINGS IN THE DELTA WERE GENERALLY IN THE 30S. AS TEMPERATURES CONTINUE TO FALL TONIGHT...THE LIGHT RAIN WILL LIKELY CHANGE TO LIGHT FREEZING RAIN OR SLEET OVER MUCH OF NORTH AND CENTRAL MISSISSIPPI...GENERALLY ALONG AND NORTH OF A VICKSBURG MERIDIAN LINE. AT THIS TIME...THE FREEZING AND FROZEN PRECIPITATION IS EXPECTED TO BE LIGHT...BUT COULD CAUSE DANGEROUS ICING ON BRIDGES AND OVERPASSES BEFORE ENDING LATE TONIGHT. IF YOU LIVE IN NORTH OR CENTRAL MISSISSIPPI...OR PLAN TO TRAVEL IN THOSE AREAS YOU SHOULD KEEP INFORMED OF THE LATEST WINTER WEATHER DEVELOPMENTS.M
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 30, 2:17 PM CST | Severe Thunderstorm Warning | JAN | Hinds | 43 min |
| Dec 30, 2:17 PM CST | Tornado Warning | JAN | Madison | 43 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.