Alert archive / Mississippi / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 14, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Apr 13, 1987, 5:22 PM CDT for Bolivar County, Mississippi. It was in force for 23 min. 2 reports 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
- Apr 13, 1987, 5:22 PM CDT (22:22 UTC)
- Expired
- Apr 13, 1987, 5:45 PM CDT
- In force
- 23 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Bolivar County, MS
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 13, 5:30 PM CDT | Thunderstorm Wind 0 | Bolivar, MS | |
| Apr 13, 5:35 PM CDT | Thunderstorm Wind 0 | Bolivar, MS |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 10.4 hours before the alert went out and 180 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
- 750 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 620 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, Apr 13, 1:01 PM CDT, 4 hours 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 100 PM CDT MON APR 13 1987 ...INTENSE THUNDERSTORMS POSSIBLE OVER MISSISSIPPI LATE THIS AFTERNOON AND TONIGHT... A STRONG LOW PRESSURE SYSTEM CONTINUES TO INTENSIFY OVER SOUTHEAST KANSAS EARLY THIS AFTERNOON...WITH A COLD FRONT TRAILING SOUTH ACROSS EAST OKLAHOMA AND EAST TEXAS. BRISK SOUTHERLY WINDS AHEAD OF THIS LOW CONTINUE TO PUMP MOIST AND UNSTABLE AIR INTO THE MID SOUTH...SETTING THE STAGE FOR POSSIBLE SEVERE WEATHER. SCATTERED VERY HEAVY THUNDERSTORMS HAVE ALREADY DEVELOPED OVER A LARGE PORTION OF MISSISSIPPI AND WILL CONTINUE TO INCREASE DURING THE AFTERNOON. AT THE CURRENT TIME...THE MAJOR THREAT OF SEVERE WEATHER IS OVER ARKANSAS AND LOUISIANA. AND TORNADO WATCHES REMAIN IN EFFECT FOR LARGE PORTIONS OF LOUISIANA AND ARKANSAS THIS AFTERNOON. PERSONS IN MISSISSIPPI ARE ADVISED TO REMAIN WEATHER CONSCIOUS THIS AFTERNOON AND TONIGHT...AND STAY TUNED FOR LATER STATEMENTS.
Special weather statement, Apr 13, 3:22 PM CDT, 2 hours before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
320 PM CDT MON APR 13 1987
...THUNDERSTORMS INCREASING OVER MISSISSIPPI...
SHOWERS AND SCATTERED HEAVY THUNDERSTORMS ARE CONTINUING TO INCREASE
ACROSS ALL OF MISSISSIPPI. AT 315 PM THE HEAVIEST STORMS WERE JUST
ACROSS THE MISSISSIPPI RIVER FROM GREENVILLE TO VICKSBURG. THESE WILL
MOVE NORTHEAST INTO THE STATE DURING THE NEXT HOUR. RESIDENTS OF THE
WESTERN COUNTIES CAN EXPECT MARBLE-SIZED HAIL...STRONG GUSTY WINDS AND
FREQUENT LIGHTNING. REMEMBER...LIGHTNING IS A KILLER. GET INSIDE WHEN
A THUNDERSTORM IS AROUND.
ANOTHER LINE OF VERY HEAVY THUNDERSTORMS IS MOVING THROUGH LOUISIANA
AND WILL ARRIVE AFTER DARK.
WATfCHES WILL LIKELY BE REQUIRED FOR MUCH OF THE STATE BEFORE THE NIGHT
IS OVER.
PERSONS IN MISSISSIPPI ARE ADVISED TO REMAIN WEATHER CONSCIOUS THIS
AFTERNOON AND EVENING...AND STAY TUNED FOR LATER STATEMENTS.Special weather statement, Apr 13, 4:13 PM CDT, 1 hour 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 415 PM CDT MON APR 13 1987 A BROKEN LINE OF VERY HEAVY THUNDERSTORMS IS CURRENTLY MOVING INTO WESTERN MISSISSIPPI. THE LINE EXTENDS FROM NEAR CLEVELAND TO JUST WEST OF FAYETTE. AT 415 PM THE HEAVIEST ACTIVITY WAS IN BOLIVAR COUNTY MOVING NORTH AT 35 MPH. RESIDENTS OF THE WESTERN COUNTIES CAN EXPECT MARBLE-SIZED HAIL... STRONG GUSTY WINDS AND FREQUENT LIGHTNING. REMEMBER...LIGHTNING IS A KILLER. GET INSIDE WHEN A THUNDERSTORM IS AROUND. THE MAIN LINE OF THUNDERSTORMS ASSOCIATED WITH THE COLD FRONT IS MOVING RAPIDLY THROUGH LOUISIANA AND WILL BE IN MISSISSIPPI BEFORE DARK. MISSISSIPPIANS SHOULD REMAIN WEATHER CONSCIOUS TONIGHT AND LISTEN FOR LATE STATEMENTS AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 4:57 PM CDT | Severe Thunderstorm Warning | JAN | Washington | 48 min |
| Apr 13, 5:15 PM CDT | Severe Thunderstorm Warning | JAN | Issaquena | 45 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 1987Every severe thunderstorm warning in 1987
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.