Alert archive / Mississippi / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 39, NWS Jackson, MS

February 15, 1993Carroll County, Holmes County, Leflore County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Feb 15, 1993, 4:12 PM CST for Carroll County, Holmes County, Leflore County, Mississippi. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Feb 15, 1993, 4:12 PM CST (22:12 UTC)
Expired
Feb 15, 1993, 5:15 PM CST
In force
63 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Carroll County, MS, Holmes County, MS, Leflore County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.2 hours before the alert went out and 117 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 1993-02-15Temperature 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 1993-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 291 square meters per square second.1939587897117Sfc1 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
1320 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
291 m²/s²
0-3 km storm-relative helicity
382 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 KJAN 152213
SVRJAN
MSC015-051-083-053-055-125-152315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
412 PM CST MON FEB 15 1993
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...S...
 
IN CENTRAL MISSISSIPPI
 
   ...CARROLL COUNTY...HOLMES COUNTY
 
IN NORTH CENTRAL MISSISSIPPI
 
   ...LEFLORE COUNTY
 
IN WEST CENTRAL MISSISSIPPI
 
   ...HUMPHREYS COUNTY...ISSAQUENA COUNTY...SHARKEY COUNTY
 
 
A LINE OF SEVERE THUNDERSTORMS WILL BE MOVING THROUGH THE WARNED
AREA BETWEEN NOW AND 515 PM CST THIS AFTERNOON.
 
 
A TORNADO WATCH IS ALSO IN EFFECT.  REMEMBER SEVERE THUNDERSTORMS
CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.  REMAIN
CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
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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, Feb 15, 10:47 AM CST, 5 hours 25 minutes before
MSZALL-152100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1040 AM CST MON FEB 15 1993

...THUNDERSTORMS BECOMING MORE LIKELY FOR TONIGHT...SOME SEVERE...

EVIDENCE CONTINUES TO MOUNT FROM THE NATIONAL WEATHER SERVICE COMPUTER
MODELS THAT THUNDERSTORMS WILL BE LIKELY FOR TONIGHT. IN FACT...SOME OF
THOSE STORMS WILL PROBABLY BECOME SEVERE WITH ISOLATED STRONG TORNADOES
POSSIBLE. BEST INFORMATION AT THIS TIME INDICATES THAT STORMS MAY BE
SEVERE MAINLY FROM AROUND 5PM THROUGH 2AM AS THEY MOVE IN RAPIDLY FROM
THE WEST.

A DEVELOPING STORM SYSTEM IN CENTRAL TEXAS WAS ACCELERATING TOWARD
THE NORTHEAST THIS MORNING. THIS SYSTEM IS FORECAST TO INTENSIFY AS IT
CROSSES THE LOWER MISSISSIPPI VALLEY AND IT WILL CAUSE STRONG SURFACE
WINDS TO DEVELOP THIS AFTERNOON. A WIND ADVISORY IS IN EFFECT FOR
SECTIONS OF WESTERN MISSISSIPPI FOR WINDS OF BETWEEN 20 AND 30 MPH
WITH SOME GUSTS UP TO 35 OR 40 MPH POSSIBLE.
ALREADY TORNADO WATCHES ARE POSTED IN PARTS OF EAST TEXAS AND STORMS
ARE INCREASING BETWEEN THE DALLAS AND SHREVEPORT AREAS.

RESIDENTS OF THE MAGNOLIA STATE SHOULD KEEP TUNED TO LATER FORECASTS
TODAY AND TONIGHT. CHECK YOUR PREPAREDNESS REQUIREMENTS AS THIS IS
POTENTIALLY DANGEROUS WEATHER SITUATION. PLAN NOW WHAT YOU WOULD DO
WHEN AND IF A SEVERE THUNDERSTORM THREATENS YOUR AREA...SECONDS CAN
SAVE LIVES.
Special weather statement, Feb 15, 2:28 PM CST, 1 hour 44 minutes before
MSZALL-160000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
215 PM CST MON FEB 15 1993

...THUNDERSTORMS POISED TO THE WEST...SOME SEVERE FOR TONIGHT...

STRONG TO SEVERE THUNDERSTORMS HAVE ERUPTED FROM NORTHWEST LOUISIANA
BACK INTO CENTRAL TEXAS THIS AFTERNOON. THESE STORMS ARE MARCHING
EASTWARD AT BETWEEN 40 AND 50 MPH MEANING THAT THEY COULD REACH THE
MISSISSIPPI RIVER BETWEEN 4 AND 6 PM CST. A TORNADO WATCH IS ALSO IN
EFFECT FOR MOST OF THE NORTHWEST HALF OF LOUISIANA AT THIS TIME.

A DEEPENING LOW PRESSURE CENTER NEAR WACO, TX WILL ACCELERATE NORTHEAST
REACHING NEAR MEMPHIS BY MIDNIGHT. STRONG SOUTHERLY WINDS GUSTING UP
TO 35 OR 40 MPH ARE LIKELY TO IMPACT THE WESTERN HALF OF MISSISSIPPI
SHORTLY AND A WIND ADVISORY REMAINS IN EFFECT FOR THOSE AREAS.

INCREASING WARM MOIST AIR FROM THE GULF OF MEXICO WILL FUEL THE THUNDER-
STORMS AS THEY RACE ACROSS THE MAGNOLIA STATE TONIGHT.
<
RESIDENTS OF MAINLY CENTRAL AND SOUTH MISSISSIPPI SHOULD KEEP TUNED
TO THE LATEST WEATHER INFORMATION THROUGH TONIGHT. CHECK YOUR SAFETY
PLANS AND BE READY TO SEEK SHELTER IN A STURDY BUILDING ON THE LOWEST
FLOOR AWAY FROM WINDOWS. THIS IS BECOMING A DANGEROUS WEATHER SITUATION
AND YOUR RESPONSE TO APPROACHING SEVERE STORMS COULD SAVE YOUR LIFE...
SECONDS CAN BE THE DIFFERENCE.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 15, 3:33 PM CSTSevere Thunderstorm WarningJANBolivar, Sunflower, Washington42 min
Feb 15, 4:12 PM CSTSevere Thunderstorm WarningJANHumphreys, Sharkey63 min
Feb 15, 4:12 PM CSTSevere Thunderstorm WarningJANIssaquena63 min
Feb 15, 4:14 PM CSTTornado WarningJANHolmes31 min
Feb 15, 4:28 PM CSTTornado WarningJANYazoo32 min
Feb 15, 4:28 PM CSTTornado WarningJANCarroll32 min
Feb 15, 4:37 PM CSTSevere Thunderstorm WarningJANGrenada, Montgomery53 min
Feb 15, 5:02 PM CSTTornado WarningJANAttala, Holmes28 min
Feb 15, 5:13 PM CSTSevere Thunderstorm WarningJANYazoo47 min
Feb 15, 5:20 PM CSTTornado WarningJANWinston55 min
Feb 15, 5:27 PM CSTTornado WarningJANChoctaw18 min
Feb 15, 5:33 PM CSTSevere Thunderstorm WarningJANAttala, Holmes42 min
Feb 15, 5:33 PM CSTSevere Thunderstorm WarningJANMadison42 min
Feb 15, 5:46 PM CSTTornado WarningJANAttala29 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1993Every severe thunderstorm warning in 1993

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.