Alert archive / Mississippi / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 30, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at May 6, 1987, 4:09 PM CDT for Copiah County, Mississippi. It was in force for 36 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 6, 1987, 4:09 PM CDT (21:09 UTC)
- Expired
- May 6, 1987, 4:45 PM CDT
- In force
- 36 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Copiah 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 |
|---|---|---|---|
| May 6, 4:30 PM CDT | Hail 0.75 | Copiah, 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, 9.2 hours before the alert went out and 61 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
- 907 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 686 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 51 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
Local storm report, May 6, 2:35 PM CDT, 1 hour 34 minutes before
LOCAL STORM REPORT...ATTEN SELS NATIONAL WEATHER SERVICE JACKSON MS 235 PM CDT WED MAY 6 1987 AT 1230 PM...THE U.S.F.S. REPORTED DIME SIZED HAIL IN SOUTHERN SHARKEY COUNTY NEAR SPANISH FORT. AT9 1240 PM...A MOTORIST REPORTED TO THE SHARKEY SHERIFFS OFFICE THAT DIME SIZED HAIL OCCURRED NEAR HOLLY BLUFF ON HIGHWAY 16 IN EXTREME YAZOO COUNTY.
Local storm report, May 6, 2:36 PM CDT, 1 hour 33 minutes before
LOCAL STORM REPORT...ATTEN SELS NATIONAL WEATHER SERVICE JACKSON MS 235 PM CDT WED MAY 6 1987 AT 1230 PM...THE U.S.F.S. REPORTED DIME SIZED HAIL IN SOUTHERN SHARKEY COUNTY NEAR SPANISH FORT. ; AT 1240 PM...A MOTORIST REPORTED TO THE SHARKEY SHERIFFS OFFICE THAT DIME SIZED HAIL OCCURRED NEAR HOLLY BLUFF ON HIGHWAY 16 IN EXTREME WESTERN YAZOO COUNTY.
Special weather statement, May 6, 2:41 PM CDT, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE JACKSON MS 230 PM CDT WED MAY 6 1987 AT 230 PM...VERY HEAVY THUNDERSTORMS WERE SCATTERED IN WESTERN MISSISSIPPI...NORTHEAST LOUISIANA...AND SOUTHEAST ARKANSAS. THE STORMS WERE MAINLY SCATTERED ALONG THE RIVER FROM NATCHEZ TO GREENVILLE. THE STRONGEST OF THESE THUNDERSTORMS WITH SMALL HAIL BEING INDICATED WERE LOCATED 25 MILES NORTHEAST OF VICKSBURG AND 15 MILES SOUTHWEST BELZONI. OTHER STRONG THUNDERSTORMS WERE INDICATED 25 MILES NORTHWEST OF GREENWOOD...15 MILES SOUTHEAST GREENVILLE...AND 10 MILES NORTHEAST OF PORT GIBSON. ALL OF THESE THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE SMALL HAIL... STRONG GUSTY= WINDS...AND DUE TO THEIR SLOW MOVEMENT LOCALLY HEAVY RAINFALL. THE THUNDERSTORMS WERE DRIFTING SOUTHEAST AT 5 MILES AN HOUR.
Special weather statement, May 6, 2:58 PM CDT, 1 hour 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 300 PM CDT WED MAY 6 1987 ...STRONG THUNDERSTORMS IN THE DELTA AND WEST CENTRAL MISSISSIPPI... THUNDERSTORMS CONTINUE TO GROW IN NUMBER AND INTENSITIES ACROSS THE WESTERN HALF OF MISSISSIPPI. AT 255 PM...THE MOST INTENSE STORMS WERE LOCATED FROM NEAR GREENVILLE TO GREENWOOD...FROM SOUTHERN YAZOO COUNTY INTO VICKSBURG...NEAR PORT GIBSON...AND MEADVILLE IN FRANKLIN COUNTY. ALL OF THESE THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE SMALL HAIL... STRONG GUSTY WINDS...AND DUE TO THEIR SLOW MOVEMENT LOCALLY HEAVY RAINFALL. ALSO...LIGHTNING HAS BEEN FREQUENT..SO ALL PERSONS NEAR THESE STORMS SHOULD MOVE TO INTO A BUILDING OR KA CAR. THE THUNDERSTORMS WERE DRIFTING SOUTHEAST AT 5 MILES AN HOUR.
Special weather statement, May 6, 3:36 PM CDT, 33 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
335 PM CDT WED MAY 6 1987
...STRONG THUNDERSTORMS OVER WESTERN MISSISSIPPI...
THUNDERSTORMS CONTINUE TO INCREASE IN COVWRAGE ACROSS THE WESTERN
HALF OF MISSISSIPPI.
AT 330 PM...THE MOST INTENSE STORM WAS LOCATED IN WASHINGTON COUNTY
NEAR GREENVILLE. ANOTHER VERY INTENSE LINE OF THUDERSTORMS EXTENDED
FROM NORTHWEST HINDS COUNTY TO SOUTH OF VICKSBURG. OTHER STRONG
THUNDERSTORMS WERE LOCATED WEST OF GREENWOOD...AND NEAR BROOKHAVEN.
ALL OF THESE THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE SMALL HAIL...
STRONG GUSTY WINDS...AND DUE TO THEIR SLOW MOVEMENT LOCALLY HEAVY
RAINFALL. ALSO...LIGHTNING HAS BEEN FREQUENT..SO ALL PERSONS NEAR THESE
STORMS SHOULD MOVE INTO A BUILDING OR A CAR.
THE THUNDERSTORMS WERE DRIFTING SOUTHEAST AT 5 MILES AN HOUR.Special weather statement, May 6, 4:00 PM CDT, 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
400 PM CDT WED MAY 6 1987
...STRONG THUNDERSTORMS MOVING THROUGH HINDS COUNTY...
AT 355 PM...A VERY LARGE AND STRONG THUNDERSTORM WITH TORRENTIAL
RAINS WAS LOCATED IN HINDS COUNTY FROM WESTERN JACKSON INTO THE
CLINTON AREA. THIS STORM HAS PRODUCED PEA SIZE HAIL IN CLINTON.
THE MAIN THREAT FROM THIS STORM WILL BE THE EXTREMELY HEAVY RAINFALL
IT WILL DROP AS IT MOVES SLOWLY TO THE SOUTHEAST.
ALL THOSE THAT WILL BE DRIVING DURING THE NEXT HOUR OR SO IN THE
JACKSON AREA CAN EXPECT BLINDING RAIN THAT COULD CAUSE SOME MINOR
FLOODING OF ROADWAYS.
LISTEN TO NOAA WEATHER RADIO FOR MORE STATEMENTS AND POSSIBLE
WARNING S.The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 12:16 PM CDT | Severe Thunderstorm Warning | JAN | Sharkey, Yazoo | 29 min |
| May 6, 1:11 PM CDT | Severe Thunderstorm Warning | JAN | Sharkey | 34 min |
| May 6, 4:25 PM CDT | Flash Flood Warning | JAN | Leflore | 2 hr |
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.