Alert archive / Mississippi / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 45, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Mar 29, 1989, 6:55 PM CST for Claiborne County, Mississippi. It was in force for 35 min.
The area
The counties it named.
The facts
- Issued
- Mar 29, 1989, 6:55 PM CST (00:55 UTC)
- Expired
- Mar 29, 1989, 7:30 PM CST
- In force
- 35 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Claiborne 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 0.9 hours before the alert went out and 224 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- -232 J/kg
- Mixed-layer LCL
- 1040 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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
Local storm report, Mar 29, 4:03 PM CST, 2 hours 52 minutes before
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</html>Local storm report, Mar 29, 4:27 PM CST, 2 hours 28 minutes before
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</html>Local storm report, Mar 29, 5:24 PM CST, 1 hour 31 minutes before
LOCAL STORM REPORT...ATTN SELS NATIONAL WEATHER SERVICE JACKSON MS 520 PM CST WED MAR 29 1989 SEVERE WEATHER REPORTS FROM THIS MORNING... AT AROUND 730 AM...AN INTENSE THUNDERSTORM MOVED THROUGH VICKSBURG (WARREN COUNTY). WIND DAMAMGE OCCURRED WITH THIS STORM FROM NEAR THE MISSISSIPPI RIVER JUST SOUTH OF DOWNTOWN VICKSBURG AND TRAVELED EAST- NORTHEAST THROUGH TOWN. A SURVEY BY THE NATIONAL WEATHER SERVICE AND THE WARREN COUNTY CIVIL DEFENSE OFFICE REVEALED THAT THE DAMAGE WAS CAUSED BY A SERIES OF MICROBURSTS FROM THE THUNDERSTORM. A MICROBURST IS A STRONG WIND THAT DESCENDS FROM THE STORM...AND THEN SPREAD OUT AND WEAKENS. ABOUT 20 HOMES IN VICKSBURG SUFFERED WIND DAMAGE...MOSTLY FROM FALLEN TREES. AT A HOSPITAL...14 CARS RECEIVED WINDOW DAMAGE...WHILE ANOTHER 3 CARS WERE BLOWN OVER AND TOTALLED. NUMEROUS SIGNS WERE BLOWN DOWN ACROSS TOWN. WINDOW PANES AND ROOF DAMAGED OCCURRED AT SEVERAL BUSINESSES. AN AWNING OVER A SIDEWALK AT A SCHOOL WAS HEAVILY DAMAGED. ESTIMATES OF WINDSPEEDS RANGED FROM 70 TO 100 MPH. < < AT 900 AM...ANOTHER MICROBURST PRODUCED WIND DAMAGE IN A SMALL AREA ABOUT 3 MILES SOUTHEAST OF FLORA IN MADISON COUNTY. ONE MOBILE HOME WAS DESTROYED...2 HOMES SUFFERED MINOR DAMAGE...AND 2 BUSINESS RECEIVED MAJOR DAMAGE. REPORT FROM THE MADISON COUNTY CIVIL DEFENSE.
Special weather statement, Mar 29, 5:40 PM CST, 1 hour 15 minutes before
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</html>Special weather statement, Mar 29, 6:11 PM CST, 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
610 PM CST WED MAR 29 1989
...STRONG THUNDERSTORMS HEADED FOR SOUTHWEST MISSISSIPPI...
AT 605 PM...A SCATTERED LINE OF STRONG THUNDERSTORMS WAS LOCATED IN
EASTERN LOUISIANA FROM ABOUT 25 MILES WEST OF PORT GIBSON TO NORTHEAST
OF ALEXANDRIA LOUISIANA. THESE STORMS ARE MOVING AND DEVELOPING EAST-
SOUTHEAST AT 25 MPH. THE ATMOSPHERIC CONDITIONS ARE MOST SUITED AT THIS
TIME FBOR STRONG TO POSSIBLY SEVERE THUNDERSTORMS GENERALLY ALONG AND
WEST OF A PORT GIBSON TO MCCOMB LINE.
A STRONG THUNDERSTORM LOCATED WEST OF PORT GIBSON IS EXPECTED TO MOVE
INTO SOUTHWEST MISSISSIPPI IN JEFFERSON OR ADAMS COUNTY AROUND 700 PM.Special weather statement, Mar 29, 6:36 PM CST, 19 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE JACKSON MS 635 PM CST WED MAR 29 1989 AT 630 PM...A SCATTERED LINE OF STRONG THUNDERSTORMS EXTENDED FROM 15 MILES WEST OF PORT GIBSON TO 30 MILES WEST OF NATCHEZ. THE STORMS ARE MOVING EAST-SOUTHEAST AT 30 MPH AND WILL BE MOVING INTO THE JEFFERSON COUNTY AROUND 700 PM AND ADAMS COUNTY AROUND 730 PM. RAIN AND SCATTERED THUNDERSTORNS...SOME HEAVY CONTINUED OVER EXTREME REASTERN MISSISSIPPI ALONG AND EAST OF INTERSTATE 59. THE RAIN EXTENDS INTO ALABAMA. THIS AREA IS MOVING EAST AT 20 MPH.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 7:11 PM CST | Severe Thunderstorm Warning | JAN | Adams | 34 min |
| Mar 29, 7:39 PM CST | Tornado Warning | JAN | Jefferson | 36 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 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.