Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 428, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 11, 1997, 2:29 PM CDT for Washington County, Mississippi. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 11, 1997, 2:29 PM CDT (19:29 UTC)
- Expired
- Jul 11, 1997, 3:00 PM CDT
- In force
- 31 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Washington County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 7.5 hours before the alert went out and 134 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
- 1868 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 859 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAN 111931 RRA SVRJAN MSC151-112000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 229 PM CDT FRI JUL 11 1997 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 300 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST MISSISSIPPI ...WASHINGTON COUNTY AT 225 PM...JACKSON DOPPLER RADAR INDICATED DEVELOPING SEVERE THUNDERSTORMS JUST SOUTH OF GREENVILLE AND BETWEEN HOLLANDALE AND ARCOLA. THESE TWO STORMS WILL LIKELY MERGE JUST EAST OF WAYSIDE AND DRIFT VERY SLOWLY TO THE SOUTHEAST. DUE TO THE SLOW MOVEMENT OF THESE STORMS...FLOODING OF LOW-LYING AREAS IS LIKELY. SEVERE THUNDERSTOR$MS PRODUCE WIND IN EXCESS OF 55 MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. < 76/78
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 11, 10:10 AM CDT, 4 hours 19 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066- 072>074-120400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1010 AM CDT FRI JUL 11 1997 SCATTERED THUNDERSTORMS WILL AGAIN DEVELOP AS TEMPERATURES PUSH INTO THE LOWER 90S THIS AFTERNOON. THE REMAINS OF A WEAK FRONTAL SYSTEM AND MODERATE INSTABILITY SHOULD PRODUCE A FEW STRONG STORMS AS WELL... ESPECIALLY OVER THE CENTRAL AND EASTERN COUNTIES. DRIER AIR ALOFT SHOULD TEND TO LIMIT ACTIVITY IN THE WEST...WHILE PLENTY OF MOISTURE IN THE SOUTHEAST WILL HELP IN THE NORTHWARD ADVANCING SEA BREEZE LATE IN THE AFTERNOON. MORNING ANALYSES INDICATE THERE IS A HIGH POTENTIAL FOR WET MICROBURST ACTIVITY FROM JUST ABOUT ANY STORM THAT DEVELOPS. THUNDERSTORM MOVEMENT IS EXPECTED TO BE SOUTHEAST AT 10 MPH OR LESS MEANING VERY HEAVY DOWNPOURS AND LOCALIZED FLOODING WILL BE POSSIBLE. SINCE NO SEVERE WEATHER IS ANTICIPATED AT THIS TIME...IT SHOULD NOT BE NECESSARY TO REQUEST THE ASSISTANCE OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL FOR SEVERE WEATHER THROUGH TONIGHT.
Special weather statement, Jul 11, 10:11 AM CDT, 4 hours 18 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066- 072>074-120400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1010 AM CDT FRI JUL 11 1997 SCATTERED THUNDERSTORMS WILL AGAIN DEVELOP AS TEMPERATURES PUSH INTO THE LOWER 90S THIS AFTERNOON. THE REMAINS OF A WEAK FRONTAL SYSTEM AND MODERATE INSTABILITY SHOULD PRODUCE A FEW STRONG STORMS AS WELL... ESPECIALLY OVER THE CENTRAL AND EASTERN COUNTIES. DRIER AIR ALOFT SHOULD TEND TO LIMIT ACTIVITY IN THE WEST...WHILE PLENTY OF MOISTURE IN THE SOUTHEAST WILL HELP IN THE NORTHWARD ADVANCING SEA BREEZE LATE IN THE AFTERNOON. MORNING ANALYSES INDICATE THERE IS A HIGH POTENTIAL FOR WET MICROBURST ACTIVITY FROM JUST ABOUT ANY STORM THAT DEVELOPS. THUNDERSTORM MOVEMENT IS EXPECTED TO BE SOUTHEAST AT 10 MPH OR LESS MEANING VERY HEAVY DOWNPOURS AND LOCALIZED FLOODING WILL BE POSSIBLE. SINCE NO SEVERE WEATHER IS ANTICIPATED AT THIS TIME...IT SHOULD NOT BE NECESSARY TO REQUEST THE ASSISTANCE OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL FOR SEVERE WEATHER THROUGH TONIGHT.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 7:50 PM CDT | Severe Thunderstorm Warning | JAN | Hinds | 40 min |
| Jul 11, 4:31 PM CDT | Severe Thunderstorm Warning | JAN | Simpson | 44 min |
| Jul 11, 4:57 PM CDT | Severe Thunderstorm Warning | JAN | Jefferson Davis | 48 min |
| Jul 11, 5:23 PM CDT | Severe Thunderstorm Warning | JAN | Copiah, Hinds | 37 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 1997Every severe thunderstorm warning in 1997
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.