Alert archive / Alabama / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 89, NWS Jackson, MS

May 4, 1989Choctaw County, Alabama

NWS Jackson, MS issued this severe thunderstorm warning at May 4, 1989, 1:46 PM CDT for Choctaw County, Alabama. It was in force for 44 min.

The area

The counties it named.

The facts

Issued
May 4, 1989, 1:46 PM CDT (18:46 UTC)
Expired
May 4, 1989, 2:30 PM CDT
In force
44 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Choctaw County, AL

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, 6.8 hours before the alert went out and 174 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 1989-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 174 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 1989-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 330 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
174 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
563 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
330 m²/s²
0-3 km storm-relative helicity
315 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 4, 9:44 AM CDT, 4 hours 2 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
930 AM CDT THU MAY 4 1989

...TORNADO WATCH 173 IN EFFECT UNTIL 400PM CDT...

STRONG THUNDERSTORMS CONTINUE OVER PORTIONS OF CENTRAL MISSISSIPPI.

AT 930 AM CDT A BAND OF RAIN WITH EMBEDDED STRONG THUNDERSTORMS
CONTINUED OVER CENTRAL MISSISSIPPI IN A 50 MILE WIDE BAND FROM DEKALB
WESTWARD ACROSS MADISON COUNTY INTO NORTHERN LOUISIANA.

THE STRONGER THUNDERSTORMS WITH TORRENTIAL RAINFALL WERE INDICATED IN
EASTERN RANKIN AND SCOTT COUNTIES AND WERE MOVING EAST AT 30 MPH.

SOME OF THESE STORMS WILL BE ACCOMPANIED BY STRONG GUSTY WINDS...SOME
HAIL...AND FREQUENT CLOUD TO GROUND LIGHTNING.

OTHER KTHUNDERSTOMS WERE CONTINUING TO INCREASE OVER NORTH LOUISIANA AND
WILL BE AFFECTING ISSAQUEENA...WARREN AND CLAIBORNE COUNTIES SHORTLY.
Special weather statement, May 4, 10:13 AM CDT, 3 hours 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1005 AM CDT THU MAY 4 1989

...TORNADO WATCH 173 IN EFFECT FOR SOUTHWEST PORTIONS UNTIL 400PM CDT...

AT 1005 AM CDT A BAND OF RAIN WITH EMBEDDED STRONG THUNDERSTORMS
CONTINUED OVER CENTRAL MISSISSIPPI IN A 50 MILE WIDE BAND FROM MERIDIAN
NORTHWESTWARD ACROSS SCOTT AND MADISON COUNTIES INTO SOUTHERN ARKANSAS
NORTHERN LOUISIANA.

THE STRONGER THUNDERSTORMS WITH TORRENTIAL RAINFALL WERE INDICATED NEAR
CANTON AND 10 MILES NORTHWEST OF FOREST AND WERE MOVING EAST AT 30 MPH.

SOME OF THESE STORMS WILL BE ACCOMPANIED BY STRONG GUSTY WINDS...SOME
HAIL...AND FREQUENT CLOUD TO GROUND LIGHTNING.

A LINE OF VERY INTENSE THUNDERSTORMS IN NORTHERN LOUISIANA EXTENDED FROM
30 MILES NORTHEAST OF MONROE...ACROSS MONROE AND ON TO THE SOUTHWEST.
WINDS UP TO 52 MILES AN HOUR OCCURRED IN MONROE AT 1000AM. THIS LINE WAS
TO THE SOUTHEAST AT 35 MILES AN HOUR AND SHOULD AFFECT ISSAQoUEENA...
WARREN AND CLAIBORNE COUNTIES BEFORE 11AM.
Local storm report, May 4, 11:40 AM CDT, 2 hours 6 minutes before
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Local storm report, May 4, 1:30 PM CDT, 16 minutes before
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Special weather statement, May 4, 1:42 PM CDT, 4 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 8:49 AM CDTFlash Flood WarningJANRankin116 min
May 4, 10:42 AM CDTTornado WarningJANIssaquena, Sharkey48 min
May 4, 10:47 AM CDTSevere Thunderstorm WarningJANWarren43 min
May 4, 11:16 AM CDTSevere Thunderstorm WarningJANClaiborne, Hinds59 min
May 4, 11:35 AM CDTSevere Thunderstorm WarningJANMadison, Rankin40 min
May 4, 12:11 PM CDTSevere Thunderstorm WarningJANSimpson49 min
May 4, 12:28 PM CDTSevere Thunderstorm WarningJANScott32 min
May 4, 12:40 PM CDTSevere Thunderstorm WarningJANSmith35 min
May 4, 12:42 PM CDTSevere Thunderstorm WarningJANJasper, Newton48 min
May 4, 1:08 PM CDTSevere Thunderstorm WarningJANClarke, Lauderdale52 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1989Every severe thunderstorm warning in 1989

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.