Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 284, NWS Jackson, MS

May 19, 1997Simpson County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 19, 1997, 3:46 PM CDT for Simpson County, Mississippi. It was in force for 44 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 19, 1997, 3:46 PM CDT (20:46 UTC)
Expired
May 19, 1997, 4:30 PM CDT
In force
44 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Simpson County, MS

What was reported inside it

TimeReportWhereRemark
May 19, 4:00 PM CDTThunderstorm WindMendenhall, MSMinor damage was done to a high school roof. Several trees and power lines were blown down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.8 hours before the alert went out and 48 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 1997-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 738 joules per kilogram.LCLLFCEL10008507005003002001001 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 1997-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.193958Sfc1 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
738 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
483 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
16 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.

395 
WUUS1 KJAN 192046 RRA
SVRJAN
MSC127-192130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
346 PM CDT MON MAY 19 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL MISSISSIPPI
 
   ...SIMPSON COUNTY
 
AT 345 PM TWO SEVERE THUNDERSTORMS WERE INDICATED...ONE WAS 4 MILES WEST
OF MENDENHALL AND THE SECOND ONE 7 MILES WEST OF PANOLA. BOTH STORMS
WERE MOVING NORTHEAST AT 25 MPH AND SHOULD AFFECT THE MENDENHALL TO
MAGEE AREAS ALONG HIGHWAY 49 BY 400 PM.
 
 
SEVERE THUNDERSTORMS PRODUCE WIND IN EXCESS OF 55 MPH...LARGE
HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
<
 
75

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, May 19, 10:35 AM CDT, 5 hours 11 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072>
074-200400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1035 AM CDT MON MAY 19 1997

THE AIRMASS OVER THE REGION TODAY IS MOIST AND UNSTABLE. AN UPPER LEVEL
DISTURBANCE APPROACHING FROM THE WEST HAS ALREADY TRIGGERED THUNDERSTORM
DEVELOPMENT OVER THE SOUTHERN HALF OF MISSISSIPPI...AND THESE STORMS
WILL SPREAD FARTHER NORTH DURING THE DAY. OVERNIGHT...THUNDERSTORMS ARE
EXPECTED TO BE MOST NUMEROUS ACROSS NORTH MISSISSIPPI AS A COLD FRONT
MOVES INTO THE AREA...WITH A CHANCE OF THUNDERSTORMS CONTINUING ACROSS
THE REMAINDER OF THE AREA.

ALTHOUGH A FEW STORMS MAY BRIEFLY PRODUCE SMALL HAIL OR STRONG WINDS...
WIDESPREAD SEVERE WEATHER IS NOT EXPECTED TODAY OR TONIGHT.

ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...OR EMERGENCY
MANAGEMENT PERSONNEL FOR SEVERE WEATHER PROBABLY WILL NOT BE NECESSARY
TODAY OR TONIGHT.
Special weather statement, May 19, 10:37 AM CDT, 5 hours 9 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072>
074-200400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1035 AM CDT MON MAY 19 1997

THE AIRMASS OVER THE REGION TODAY IS MOIST AND UNSTABLE. AN UPPER LEVEL
DISTURBANCE APPROACHING FROM THE WEST HAS ALREADY TRIGGERED THUNDERSTORM
DEVELOPMENT OVER THE SOUTHERN HALF OF MISSISSIPPI...AND THESE STORMS
WILL SPREAD FARTHER NORTH DURING THE DAY. OVERNIGHT...THUNDERSTORMS ARE
EXPECTED TO BE MOST NUMEROUS ACROSS NORTH MISSISSIPPI AS A COLD FRONT
MOVES INTO THE AREA...WITH A CHANCE OF THUNDERSTORMS CONTINUING ACROSS
THE REMAINDER OF THE AREA.

ALTHOUGH A FEW STORMS MAY BRIEFLY PRODUCE SMALL HAIL OR STRONG WINDS...
WIDESPREAD SEVERE WEATHER IS NOT EXPECTED TODAY OR TONIGHT.

ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...OR EMERGENCY
MANAGEMENT PERSONNEL FOR SEVERE WEATHER PROBABLY WILL NOT BE NECESSARY
TODAY OR TONIGHT.
Special weather statement, May 19, 10:45 AM CDT, 5 hours 1 minute before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072>
074-200400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1045 AM CDT MON MAY 19 1997

THE AIRMASS OVER THE REGION TODAY IS MOIST AND UNSTABLE. AN UPPER LEVEL
DISTURBANCE APPROACHING FROM THE WEST HAS ALREADY TRIGGERED THUNDERSTORM
DEVELOPMENT OVER SOUTHERN MISSISSIPPI...AND THESE STORMS WILL SPREAD
FARTHER NORTH DURING THE DAY. OVERNIGHT...THUNDERSTORMS ARE EXPECTED TO
BE MOST NUMEROUS ACROSS NORTH MISSISSIPPI AS A COLD FRONT MOVES INTO THE
AREA...WITH A CHANCE OF THUNDERSTORMS CONTINUING ACROSS THE REMAINDER OF
THE REGION.

ALTHOUGH A FEW STORMS MAY BRIEFLY PRODUCE SMALL HAIL OR STRONG WINDS...
WIDESPREAD SEVERE WEATHER IS NOT EXPECTED TODAY OR TONIGHT.

ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...OR EMERGENCY
MANAGEMENT PERSONNEL FOR SEVERE WEATHER PROBABLY WILL NOT BE NECESSARY
TODAY OR TONIGHT.

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 7:02 PM CDTSevere Thunderstorm WarningJANCopiah, Hinds43 min
May 19, 12:45 PM CDTFlash Flood WarningJANJones3 hr
May 19, 3:20 PM CDTSevere Thunderstorm WarningJANFranklin25 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1997Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.