Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 128, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at May 21, 1990, 12:52 PM CDT for Choctaw County, Alabama. It was in force for 53 min.
The area
The counties it named.
The facts
- Issued
- May 21, 1990, 12:52 PM CDT (17:52 UTC)
- Expired
- May 21, 1990, 1:45 PM CDT
- In force
- 53 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
Centreville/Bibb, AL (KCKL), launched 12:00Z, 5.9 hours before the alert went out and 140 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
- 173 J/kg
- Mixed-layer CIN
- -336 J/kg
- Mixed-layer LCL
- 1194 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 21, 10:57 AM CDT, 1 hour 55 minutes before
MSZALL-211700- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE JACKSON MS 1055 AM CDT MON MAY 21 1990 ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF NORTH AND MUCH OF CENTRAL MISSISSIPPI UNTIL 100 PM CDT... AT 1045 AM CDT...A LINE OF THUNDERSTORMS ACROSS CENTRAL MISSISSISSIPPI FROM LOUISVILLE TO CARTHAGE TO JACKSON TO VICKSBURG. HAIL AND HEAVY RAIN ARE POSSIBLE ALONG THIS LINE. A WIND GUST LINE HAS DEVELOPED AHEAD OF THE THUNDERSTORM LINE. IT EXTENDS FROM MACON TO BRANDON TO SOUTH OF VICKSBURG. WIND GUSTS NEAR 50 MILES AN HOUR ARE POSSIBLE ALMOST ANYWHERE ALONG THIS GUST LINE. DURING THE PAST HOUR...WIND GUSTS NEAR 50 MILES AN HOUR HAVE BEEN REPORTED AT THE ROSS BARNETT RESERVOIR NORTHEAST OF JACKSON. THE LINE OF THUNDERSTORMS IS MOVING SOUTHEAST AROUND 30 MILES AN HOUR AND THE GUST LINE IS PROBABLY MOVING AROUND THE SAME SPEED. THE INDIVIDUAL STORMS ARE MOVING EAST AROUND 35 MI LES AN HOUR.
Local storm report, May 21, 11:18 AM CDT, 1 hour 34 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE JACKSON MS
1115 AM CDT MON MAY 21 1990
A PARTIAL LIST OF STORM REPORTS RECEIVED BY NWS JACKSON. MORE WILL
PROBABLY FOLLOW LATER.
845 AM...NUMEROUS TREES DOWN WEST OF LEXINGTON. (MP&L)
850 AM...MARBLE SIZE HAIL NORTHEAST OF LEXINGTON. (SPOTTER)
900 AM...VERY HEAVY RAIN AT WEST. (SPOTTER)
1045 AM...WIND GUSTS NEAR 50 MPH AT ROSS BARNETT RESERVOIR NORTHEAST
OF JACKSON.
1050 AM...WIND GUFSTS NEAR 40 MPH AT HAWKINS FIELD IN JACKSON.
1055 AM...WIND GUSTS NEAR 40 MPH AT THOMPSON FIELD IN JACKSON.Local storm report, May 21, 11:20 AM CDT, 1 hour 32 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE JACKSON MS
1115 AM CDT MON MAY 21 1990
A PARTIAL LIST OF STORM REPORTS RECEIVED BY NWS JACKSON. MORE WILL
PROBABLY FOLLOW LATER.
845 AM...NUMEROUS TREES DOWN WEST OF LEXINGTON. (MP&L)
850 AM...MARBLE SIZE HAIL NORTHEAST OF LEXINGTON. (SPOTTER)
900 AM...VERY HEAVY RAIN AT WEST. (SPOTTER)
1045 AM...WIND GUSTS NEAR 50 MPH AT ROSS BARNETT RESERVOIR NORTHEAST
OF JACKSON.
1050 AM...WINLD GUSTS NEAR 40 MPH AT HAWKINS FIELD IN JACKSON.
1055 AM...WIND GUSTS NEAR 40 MPH AT THOMPSON FIELD IN JACKSON.
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1045 AM...TREES DOWN NEAR CARTHAGE.
1115 AM...PEA SIZE HAIL IN JACKSON.Local storm report, May 21, 11:41 AM CDT, 1 hour 11 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MERIDIAN MS
1135 AM CDT MON MAY 21 1990
1134 AM CDT...NESHOBA COUNTY C. D. REPORTED NICKEL SIZE HAIL
2 MILES SOUTHEAST OF PHILADELPHIA IN NESHOBA
COUNTY MISSISSIPPI.Special weather statement, May 21, 12:04 PM CDT, 48 minutes before
MSZALL-211800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 1203 PM CDT MON MAY 21 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF CENTRAL AND SOUTH MISSISSIPPI UNTIL 500 PM... AT NOON...A LINE OF STRONG THUNDERSTORMS CONTINUES ACROSS CENTRAL MISSISSIPPI FROM SOUTH OF DEKALB TO FORREST TO FLORENCE AND TO THE MISSISSIPPI RIVER NORTHWEST OF PORT GIBSON. THE HEAVIEST STORMS ALONG THIS LINE WERE LOCATED JUST ACROSS THE RIVER FROM PORT GIBSON...AND WILL BE MOVING INTO PORT GIBSON BEFORE 1230 PM. THESE STORMS MAY PRODUCE HAIL AND VERY HEAVY RAIN IN A SHORT PERIOD OF TIME. A WIND GUST LINE CONTINUES ROUGHLY 10 TO 15 MILES AHEAD OF THE THUNDERSTORM LINE. WIND GUSTS AROUND 50 MILES AN HOUR ARE POSSIBLE ALMOST ANYWHERE AHEAD OF THIS LINE. BOTH THE THUNDERSTORM LINE AND THE WIND GUST LINE ARE MOVING SOUTHEAST AROUND 25 TO 30 MILES AN HOUR. THE INDIVIDUAL THUNDERSTORMS ARE MOVING EAST AT 35 TO 40 MILES AN HOUR.
Special weather statement, May 21, 12:33 PM CDT, 19 minutes before
MSZALL-211800- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE JACKSON MS 1230 PM CDT MON MAY 21 1990 ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF CENTRAL AND SOUTH MISSISSIPPI UNTIL 500 PM... AT 1230 PM...A LINE OF STRONG THUNDERSTORMS CONTINUES ACROSS CENTRAL MISSISSIPPI FROM NEWTON TO CRYSTAL SPRINGS TO PORT GIBSON. THE HEAVIEST STORM WAS INDICATED NEAR HERMANVILLE. THIS STORM PROBABLY CONTAINS LARGE HAIL. IT ANOTHER STRONG STORM WAS INDICATED NEAR MAGEE. A WIND GUST LINE CONTINUES ROUGHLY 10 TO 15 MILES AHEAD OF THE THUNDERSTORM LINE. WIND GUSTS AROUND 50 MILES AN HOUR ARE POSSIBLE ALMOST ANYWHERE AHEAD OF THIS LINE. BOTH THE THUNDERSTORM LINE AND THE WIND GUST LINE ARE MOVING SOUTHEAST AROUND 25 TO 30 MILES AN HOUR. THE INDIVIDUAL THUNDERSTORMS ARE MOVING EAST AT 35 TO 40 MILES AN HOUR.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 7:55 AM CDT | Severe Thunderstorm Warning | JAN | Leflore | 50 min |
| May 21, 8:21 AM CDT | Severe Thunderstorm Warning | JAN | Winston | 54 min |
| May 21, 8:29 AM CDT | Severe Thunderstorm Warning | JAN | Holmes | 31 min |
| May 21, 8:51 AM CDT | Severe Thunderstorm Warning | JAN | Noxubee | 54 min |
| May 21, 10:29 AM CDT | Severe Thunderstorm Warning | JAN | Winston | 46 min |
| May 21, 10:40 AM CDT | Severe Thunderstorm Warning | JAN | Noxubee | 65 min |
| May 21, 10:52 AM CDT | Severe Thunderstorm Warning | JAN | Neshoba | 68 min |
| May 21, 11:52 AM CDT | Severe Thunderstorm Warning | JAN | Newton | 53 min |
| May 21, 12:10 PM CDT | Severe Thunderstorm Warning | JAN | Lauderdale | 50 min |
| May 21, 12:15 PM CDT | Severe Thunderstorm Warning | JAN | Claiborne | 45 min |
| May 21, 1:02 PM CDT | Severe Thunderstorm Warning | JAN | Jasper | 43 min |
| May 21, 1:08 PM CDT | Severe Thunderstorm Warning | JAN | Lincoln | 37 min |
| May 21, 2:19 PM CDT | Severe Thunderstorm Warning | JAN | Wayne | 26 min |
| May 21, 11:26 AM CDT | Severe Thunderstorm Warning | JAN | Sumter | 34 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 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.