Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 237, NWS Jackson, MS

December 22, 1990Newton County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Dec 22, 1990, 10:57 AM CST for Newton County, Mississippi. It was in force for 63 min.

The area

The counties it named.

The facts

Issued: Dec 22, 1990, 10:57 AM CST (16:57 UTC)
Expired: Dec 22, 1990, 12:00 PM CST
In force: 63 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Newton 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, 5.0 hours before the alert went out and 91 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: 822 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 605 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 241 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMEI 221658
SVRMEI
MSC101-221800-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MERIDIAN MS
1057 AM CST SAT DEC 22 1990
 
THE NATIONAL WEATHER SERVICE IN MERIDIAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL NOON CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL MISSISSIPPI
 
   ...NEWTON COUNTY
 
AT 1045 AM CST RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES NORTHWEST
OF NEWTON MISSISSIPPId MOVING NORTHEAST AT 30 MPH.
 
 
 
 
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

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, Dec 22, 5:39 AM CST, 5 hours 18 minutes before

MSZALL-221245-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
525 AM CST SAT DEC 22 1990

AT 525 AM CST...A LINE OF THUNDERSTORMS WITH HEAVY RAINFALL STRETCHED
ACROSS CENTRAL MISSISSIPPI.
THE HEAVIEST WERE FROM UTICA TO LOUISVILLE.

OTHER THUNDERSTORMS AND RAINSHOWERS WERE SCATTERED ACROSS MOST OF CENTRAL
AND SOUTH MISSISSIPPI.

THE LINE WAS DRIFTING SOUTHEAST AT 5 MILES AN HOUR...THE THUNDERSTORMS
WERE MOVING NORTHEAST ALONG THE LINE AT 35 MILES AN HOUR.

Special weather statement, Dec 22, 6:10 AM CST, 4 hours 47 minutes before

MSZALL-221400-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
600 AM CST SAT DEC 22 1990

...MUCH COLDER AIR SPREADING INTO MISSISSIPPI...

A STRONG COLD FRONT STRETCHED ACROSS WEST MISSISSIPPI EARLY THIS MORNING
NEAR A GREENWOOD TO NATCHEZ LINE. TEMPERATURES ALONG AND AHEAD OF THE
FRONT WERE IN THE 60S AND LOWER 70S...WHILE IN THE COLDER AIR BEHIND
THE FRONT READINGS WERE IN THE UPPER 30S AND 40S. THE FRONT WILL
CONTINUE TO PUSH TO THE EAST...AND SHOULD MOVE CLEAR OF THE STATE
EARLY TONIGHT.

RAIN AND THUNDERSTORMS WILL CONTINUE TODAY ALONG AND AHEAD OF THIS
STRONG COLD FRONT...AND SOME OF THE STORMS MAY BE SEVERE. HEAVY RAIN IS
ALSO POSSIBLE...AND A FLASH FLOOD WATCH IS IN EFFECT TODAY FOR PARTS OF
NORTH AND CENTRAL MISSISSIPPI.

THE THUNDERSTORMS WILL END FROM THE WEST TODAY AS THE FRONT PASSES...
HOWEVER SOME AREAS OF LIGHT RAIN ARE EXPECTED TO LINGER IN THE COLDER
AIR BEHIND THE FRONT.  THE RAIN WILL CHANGE TO LIGHT FREEZIN RAIN FROM
THE NORTHWEST LATE THIS AFTERNOON AND TONIGHT OVER NORTH AND CENTRAL
MISSISSIPPI AS TEMPERATURES CONTINUE TO FALL. SOME FREEZING RAIN IS
ALSO POSSIBLE IN THE SOUTHWEST BY DAYBREAK SUNDAY.  AMOUNTS ARE NOT
EXPECTED TO BE SIGNIFICANT...BUT SOME ICING OF BRIDGES AND OVERPASSES IS
POSSIBLE TONIGHT.

IT WILL REMAIN VERY COLD SUNDAY WITH A FEW SNOW FLURRIES IN THE NORTH
...AND A FEW PATCHES OF LIGHT RAIN OR FREEZING RAIN IN THE CENTRAL AND
SOUTHERN COUNTIES).

Special weather statement, Dec 22, 6:22 AM CST, 4 hours 35 minutes before

MSZ009-012-ALZ008-013-221530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
621 AM CST SAT DEC 22 1990

TORNADO WATCH NUMBER 787 EXPIRED AT 600 AM CST. A FLASH FLOOD WATCH IS
IN EFFECT FOR ALL OF EAST CENTRAL MISSISSIPPI AND SUMTER COUNTY IN
EXTREME WEST CENTRAL ALABAMA.

EARLY THIS MORNING A COLD FRONT EXTENDED FROM NEAR TUPLEO SOUTHWEST TO
PORT GIBSON AND ON INTO LOUISIANA.  THERE WAS A LARGE CONTRAST IN
TEMPERATURE ACROSS THE FRONT.  AT 600 AM CST THE IT WAS 71 IN MERIDIAN
AND IN JACKSON...WHILE IT WAS 52 IN GREENWOOD AND 48 IN MONROE
LOUISIANA.

AT 611 AM CST MERIDIAN WEATHER RADAR SHOWED A 40 MILE WIDE AREA OF RAIAND SCATTERED VERY STRONG THUNDERSTORMS THAT EXTENDED FROM EAST OF
COLUMBUS TO MACON TO NEAR EDINBURG AND SOUTHWEST.  THE AREA WAS MOVING
SOUTHEAST AT 15 MPH.

ALL IN EAST CENTRAL MISSISSIPPI AND EXTREME WEST CENTRAL ALABAMA AHEAD
OR SOUTHEAST OF THE FRONT CAN EXPECT RAIN AND THUNDERSTORMS FOR MCOST
OF THIS MORNING...THOSE BEHIND OR NORTHWEST OF THE FRONT CAN EXPECT A
SHIFT TO NORTHWEST WINDS AND MUCH COLDER TEMPERATURES.

Local storm report, Dec 22, 9:27 AM CST, 1 hour 30 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
930 AM CST SAT DEC 22 1990

TIME          PLACE                   EVENT
915 AM        NEAR BROOKHAVEN         OUTBUILDING BLOWN INTO ROAD
              LINCOLN CO.             ROOF BLOWN OFF AN ABANDONED
                                      HOUSE.

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, 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
Dec 22, 1:28 PM CST	Tornado Warning	JAN	Forrest	17 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1990 Every severe thunderstorm warning 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.