Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 239, NWS Jackson, MS

December 22, 1990Newton County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Dec 22, 1990, 12:28 PM CST for Newton County, Mississippi. It was in force for 62 min.

The area

The counties it named.

The facts

Issued: Dec 22, 1990, 12:28 PM CST (18:28 UTC)
Expired: Dec 22, 1990, 1:30 PM CST
In force: 62 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, 6.5 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 221829
SVRMEI
MSC101-221930-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MERIDIAN MS
1228 PM CST SAT DEC 22 1990
 
THE NATIONAL WEATHER SERVICE IN MERIDIAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  130 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL MISSISSIPPI
 
   ...NEWTON COUNTY
 
AT 1228 PM CST RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES SOUTH OF
NEWTON MISSISSIPPI MOVING NORTHEAST AT 30 MPH.
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
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

Local storm report, Dec 22, 9:27 AM CST, 3 hours 1 minute 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.

Local storm report, Dec 22, 11:52 AM CST, 36 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MERIDIAN MS
1150 AM CST SAT DEC 22 1990

1132 AM CST...NESHOBA COUNTY C. D. REPORTS TRACTOR SHED AND NUMEROUS
              TREES BLOWN DOWN JUST NORTH OF PHILADELPHIA MISSISSIPPI.

Local storm report, Dec 22, 12:28 PM CST, 0 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1120 PM CST SAT DEC 22 1990

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

1015 AM       PINOLA                  DAMAGE TO 1 HOUSE
              SIMPSON CO.             ROOF BLOWN OFF A FARM
                                      SUPPLY BUILDING

1045 AM       NEAR MENDENHALL         NMRS TREES DOWN
              SIMSON CO.

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, 12:39 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.