Alert archive / Mississippi / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 71, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 18, 1986, 4:55 PM CDT for Holmes County, Mississippi. It was in force for 65 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1986, 4:55 PM CDT (21:55 UTC)
- Expired
- Jul 18, 1986, 6:00 PM CDT
- In force
- 65 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Holmes 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
Jackson, MS (KJAN), launched 12:00Z, 9.9 hours before the alert went out and 89 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
- 1786 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 626 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAAOO KJAN 182155
SVRJAN
MSC051-182300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
455 PM CDT FRI JUL 18 1986
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 600 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
IN CENTRAL MISSISSIPPI
..HOLMES
AT 454 PM...RADAR INDICATED A SEVERE THUNDERSTORM NEAR THE
HOLMES-CARROLL COUNTY LINE ABOUT 10 MILES NORTHEAST OF LEXINGTON
MOVING TO THE WEST-SOUTHWEST AT 5 MILES AN HOUR.
THIS STORM IS LIKELY PRODUCING LARGE HAIL AND WINDS GREATER THAN 58
MPH.
WHEN THUNDERSTORMS ARE OCCURRING, PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.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, Jul 18, 3:48 PM CDT, 1 hour 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 348 PM CDT FRI JUL 18 1986 ...HEAVY THUNDERSTORMS IN WEST CENTRAL MISSISSIPPI... A CLUSTER OF VERY HEAVY THUNDERSTORMS WAS LOCATED IN WEST CENTRAL MISSISSIPPI FROM NEAR UTICA TO YAZOO CITY. THESE THUNDERSTORMS ARE NEARLY STATIONARY AND ARE PRODUCING TORRENTIAL AMOUNTS OF RAIN. THE HEAVIEST THUNDERSTORMS ARE LOCATED NEAR THE WARREN- HINDS COUNTY LINE NORTHWARD INTO SOUTHERN YAZOO COUNTY. THESE STORMS ARE CAPABLE OF DROPPING SEVERAL INCHES OF RAIN IN A 1 TO 2 HOUR PERIOD. THIS CAN CAUSE TEMPORARY FLOODING OF STREETS AND LOW LYING AREAS. THESE STORMS ARE ALSO PRODUCING FREQUENT LIGHTNING, GUSTY WINDS AND POSSIBLY SOME SMALL HAIL. OTHER HEAVY THUNDERSTORMS ARE LOCATED BETWEEN GREENWOOD AND MERIDIAN. OTHER HEAVY THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS PORTIONS OF CENTRAL MISSISSIPPI DURING THE NEXT COUPLE OF HOURS.
Special weather statement, Jul 18, 4:19 PM CDT, 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 420 PM CDT FRI JUL 18 1986 ...HEAVY THUNDERSTORMS ARE ALSO DEVELOPING OVER NORTH CENTRAL MISSISSIPPI... A LINE OF VERY HEAVY THUNDERSTORMS WAS LOCATED IN NORTH CENTRAL MISSISSIPPI FROM NEAR GREENWOOD SOUTHEAST TO PHILADELPHIA. THESE STORMS WERE SLOWLY MOVING TO THE SOUTHWEST AT UNDER 10 MILES AN HOUR, AND WILL BE DRIFTING ACROSS THE CITY OF GREENWOOD DURING THE NEXT 30 MINUTES. THESE STORMS ARE CAPABLE OF DROPPING A COUPLE OF INCHES OF RAIN IN A 1 TO 2 HOUR PERIOD. THIS CAN CAUSE TEMPORARY FLOODING OF STREETS AND LOW LYING AREAS. THESE STORMS ARE ALSO PRODUCING FREQUENT LIGHTNING, GUSTY WINDS AND POSSIBLY SOME SMALL HAIL. OTHER HEAVY THUNDERSTORMS WERE RAPIDLY DEVELOPING OVER MISSISSIPPI FROM THE NORTHEAST CORNER OF THE STATE TO THE SOUTHWEST CORNER. STRONG THUNDERSTORMS WILL BE MOVING INTO THE VICKSBURG AREA DURING THE NEXT HOUR AND COULD CAUSE DANGEROUS DRIVING CONDITIONS DURING THE RUSH HOUR TRAFFIC THIS AFTERNOON.
Special weather statement, Jul 18, 4:47 PM CDT, 8 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
445 PM CDT FRI JUL 18 1986
...HEAVY THUNDERSTORMS CONTINUE IN MISSISSIPPI....
SEVERAL CLUSTERS OF VERY HEAVY THUNDERSTORMS WERE LOCATED OVER
MISSISSIPPI. ONE LARGE CLUSTER OF STORMS WAS LOCATED IN WEST CENTRAL
MISSISSIPPI FROM NORTHWEST COPIAH COUNTY TO NORTH OF VICKSBURG. ANOTHER
CLUSTER EXTENDED FROM NEAR WATER VALLEY TO GREENWOOD TO PHILADELPHIA.
A VERY INTENSE THUNDERSTORM WAS LOCATED NEAR COLUMBUS. ALL THESE
STORMS ARE CAPABLE OF DROPPING A COUPLE OF INCHES OF RAIN IN A 1 TO
2 HOUR PERIOD. THIS CAN CAUSE TEMPORARY FLOODING OF STREETS AND LOW
LYING AREAS. THESE STORMS ARE ALSO PRODUCING FREQUENT LIGHTNING,
GUSTY WINDS AND POSSIBLY SOME SMALL HAIL.
SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED OVER OTHER SECTIONS OF
MISSISSIPPI, EXCEPT IN THE SOUTHEAST WHERE THE ACTIVITY WAS ISOLATED.
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ALL THUNDERSTORMS WERE MOVING TO THE SOUTHWEST AT 5 MILES AN HOUR.Nearby
Severe Thunderstorm Warnings in Mississippi, 1986Every severe thunderstorm warning in 1986
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.