Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 86, NWS Jackson, MS

April 27, 1990Newton County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 27, 1990, 4:53 PM CDT for Newton County, Mississippi. It was in force for 37 min.

The area

The counties it named.

The facts

Issued
Apr 27, 1990, 4:53 PM CDT (21:53 UTC)
Expired
Apr 27, 1990, 5:30 PM CDT
In force
37 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, 9.9 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-pSkew-T log-p diagram, Jackson, MS at 12:00Z on 1990-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 1990-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
0 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
-5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMEI 272154
SVRMEI
MSC101-272230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MERIDIAN MS
453 PM CDT FRI APR 27 1990
 
THE NATIONAL WEATHER SERVICE IN MERIDIAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL MISSISSIPPI
 
   ...NEWTON COUNTY
 
AT 450 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES WEST OF
DECATUR MISSISSIPPI MOVING NORTH AT 25 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.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

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 27, 2:13 PM CDT, 2 hours 40 minutes before
MSZ009-012-ALZ008-013-272100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
 215  PM CDT FRI APR 27 1990

 TORNADO WATCH NUMBER 167 CONTINUES IN EFFECT UNTIL 700 PM CDT FOR THE
FOLLOWING COUNTIES IN EAST CENTRAL MISSISSIPPI...CLARKE...JASPER...NEWTON
...LAUDERDALE...JONES...WAYNE THE FLOLLOWING COUNTIES IN EXTREME WEST
CENTRAL ALABAMA...SUMTET...CHOCTAW.

AT 210 PM CDT RADAR INDICATED A LARGE AREA OF STRONG THUNDERSTORM OVER
EAST CENTRAL MISSISSIPPI. THE STRONGEST THUNDERSTORMS WERE WEST OF A LINE
FROM NEAR GREENWOOD TO NEAR HATTIESBURG. THEY WERE MOVING NORTH AT 25 MPH.

EVERYONE IN AND CLOSE TO THE WATCH AREA SHOULD REMAIN WEATHER ALERT THROUGH
THE AFTERNOON AS THIS IS A DANGEROUS SITUATION. <<
Special weather statement, Apr 27, 2:48 PM CDT, 2 hours 5 minutes before
MSZALL-272030-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
240 PM CDT FRI APR 27 1990

...TORNADO WATCH NO. 167 IN EFFECT UNTIL 7 PM FOR A LARGE PART OF
   CENTRAL AND SOUTHERN MISSISSIPPI...

STRONG THUNDERSTORMS WERE INDICATED OVER CENTRAL AND SOUTH MISSISSIPPI
WITH THE STRONGEST STORMS FROM GREENWOOD TO MCCOMB TO MAGEE. A FEW
THUNDERSTORMS HAVE BEEN SEVERE WITH A REPORT OF A TORNADO TOUCHDOWN
ALONG HIGHWAY 28 NEAR MAGEE. THESE STORMS HAVE PRODUCED DAMAGING
WINDS WITH DOWNED TREES AND DAMAGE TO HOUSES. MOVEMENT WAS TO THE NORTH
AT ABOUT 25 MPH.

STRONG THUNDERSTORMS WILL CONTINUE TO REDEVELOP OVER CENTRAL AND SOUTH
MISSISSIPPI TODAY AND MOVE TO THE NORTH. FORMATION OF SEVERE THUNDERSTORMS
IS LIKELY THROUGH THE AFTERNOON.
Special weather statement, Apr 27, 3:46 PM CDT, 1 hour 7 minutes before
MSZALL-272130-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
340 PM CDT FRI APR 27 1990

...TORNADO WATCH NO. 167 IN EFFECT FOR A LARGE PART OF CENTRAL AND
   SOUTH MISSISSIPPI...

AT 334 PM CDT...THUNDERSTORMS AND RAIN COVERED MOST OF WEST AND SOUTH
MISSISSIPPI AND WERE SCATTERED OVER THE EAST PORTION OF THE STATE.

SEVERAL SEVERE THUNDERSTORMS WERE INDICATED ALONG A LINE FROM GREENWOOD
TO COLUMBIA. THE STRONGEST THUNDERSTORM WAS LOCATED NEAR THE MADISON-
LEAKE COUNTY LINE ABOUT 15 MILES WEST OF CARTHAGE. THIS STORM HAD
PRODUCED A TORNADO EARLIER IN THE AFTERNOON AND PRODUCED WIND DAMAGE
IN ITS PATH.

GENERAL MOVEMENT OF THE STORMS WAS TO THE NORTH AT ABOUT 25 MPH.
Special weather statement, Apr 27, 4:18 PM CDT, 35 minutes before
MSZALL-272200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
410 PM CDT FRI APR 27 1990

...TORNADO WATCH NO. 170 HAS BEEN ISSUED FOR A LARGE PART OF CENTRAL
   AND EAST MISSISSIPPI
...TORNADO WATCH NO. 167 FOR CENTRAL AND SOUTH MISSISSIPPI HAS BEEN
   CANCELLED...

THUNDERSTORMS CONTINUED OVER MUCH OF MISSISSIPPI. THE STRONGEST STORMS
WERE LOCATED OVER CENTRAL MISSISSIPPI WITH GENERAL MOVEMENT TO THE
NORTH.

UNSTABLE WEATHER CONDITIONS OVER MISSISSIPPI HAVE BEEN MADE EVEN MORE
UNSTABLE DUE TO AN UPPER LEVEL DISTURBANCE IN THE AREA. SEVERAL SEVERE
THUNDERSTORMS HAVE DEVELOPED OVER CENTRAL MISSISSIPPI AS THE DISTURBANCE
MOVES THROUGH. THE UPPER SYSTEM WILL CONTINUE EASTWAR+D THIS EVENING...
INCREASING THE THREAT OF SEVERE WEATHER OVER EASTERN SECTIONS OF THE
STATE. HAIL...HEAVY RAIN AND STRONG WINDS ARE LIKELY AND TORNADO
DEVELOPMENT IS POSSIBLE.
Special weather statement, Apr 27, 4:21 PM CDT, 32 minutes before
MSZ009-012-ALZ008-013-272300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
 415  PM CDT FRI APR 27 1990

 TORNADO WATCH NUMBER 170 IS EFFECT UNTIL 1000 PM CDT FOR ALL COUNTIES
 IN EAST CENTRAL MISSISSIPPI AND ALL COUNTIES OF EXTREME WEST CENTRAL
ALABAMA. THIS WATCH REPLACES TORNADO WATCH NUMBER 167.

AT 414 PM CDT RADAR INDICATED A LARGE AREA OF RAIN WITH EMBEDDED STRONG
THUNDERSTORMS OVER MOST OF EAST CENTRAL MISSISSIPPI. THE STRONGEST STORMS
WERE FROM NEAR FOREST TO NEAR MT OLIVE MISSISSIPPI. THEY WERE MOVING NORTH
AT 25 MPH.

TORNADOES HAVE ALREADY BEEN OBSERVED WITH THIS WEATHER SYSTEM.

EVERYONE IN AND CLOSE TO THE WATCH AREA SHOULD REMAIN WEATHER ALERT THROUGH
THE0 AFTERNOON AS THIS IS A DANGEROUS SITUATION. <<
Special weather statement, Apr 27, 4:44 PM CDT, 9 minutes before
MSZALL-272230-

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
440 PM CDT FRI APR 27 1990

...TORNADO WARNING FOR ATTALA AND SIMPSON COUNTIES TIL 445 PM
...FLASH FLOOD WARNING FOR HINDS COUNTY TIL 545 PM
...TORNADO WATCH NO. 170 HAS BEEN ISSUED FOR A LARGE PART OF CENTRAL
   AND EAST MISSISSIPPI
...TORNADO WATCH NO. 167 FOR CENTRAL AND SOUTH MISSISSIPPI HAS BEEN
   CANCELLED...

SCATTERED THUNDERSTORMS WERE INDICATED OVER NORTHWEST AND SOUTH CENTRAL
MISSISSIPPI. STRONG THUNDERSTORMS...A FEW SEVERE...WERE GENERALLY
LOCATED IN CENTRAL SECTIONS FROM GREENWOOD TO COLUMBIA. A TORNADO WAS
REPORTED NEAR THE ATTALA CARROLL COUNTY BORDER AND WAS MOVING NORTH.

THESE STORMS HAVE PRODUCED LARGE HAIL...DAMAGING WINDS...DANGEROUS
LIGHTNING AND HEAVY RAIN. GOLF BALL SIZE HAIL AND HEAVY RAIN WAS
REPORTED IN EASTERN MADISON COUNTY. SINCE NOON TODAY...3.79 INCHES OF
RAIN HAD FALLEN IN DOWNTOWN JACKSON.

THE MAIN COLD FRONT WAS LOCATEHD BACK OVER TEXAS AND OKLAHOMA THIS
AFTERNOON. HOWEVER...AN UPPER LEVEL SYSTEM MOVED OVER THE LOWER
MISSISSIPPI VALLEY TODAY AND SET OFF SEVERE WEATHER IN AN ALREADY
UNSTABLE AIR MASS. THE STORMS WILL PROGRESS SLOWLY EASTWARD THIS
EVENING.

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 27, 2:09 PM CDTTornado WarningJANSimpson11 min
Apr 27, 2:09 PM CDTTornado WarningJANSmith36 min
Apr 27, 2:17 PM CDTTornado WarningJANRankin28 min
Apr 27, 2:38 PM CDTSevere Thunderstorm WarningJANMadison, Yazoo37 min
Apr 27, 2:46 PM CDTTornado WarningJANRankin, Scott29 min
Apr 27, 3:03 PM CDTSevere Thunderstorm WarningJANHolmes42 min
Apr 27, 3:18 PM CDTTornado WarningJANLeake, Madison42 min
Apr 27, 3:18 PM CDTTornado WarningJANScott32 min
Apr 27, 3:37 PM CDTFlash Flood WarningJANHinds2 hr
Apr 27, 4:02 PM CDTTornado WarningJANAttala43 min
Apr 27, 4:09 PM CDTTornado WarningJANSimpson36 min
Apr 27, 4:46 PM CDTTornado WarningJANCarroll29 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1990Every 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.