Alert archive / Mississippi / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 354, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 12, 2020, 5:14 PM CDT for Clarke County, Mississippi. It was in force for 46 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 12, 2020, 5:14 PM CDT (22:14 UTC)
- Expired
- Jul 12, 2020, 6:00 PM CDT
- In force
- 46 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Clarke County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 125 km from the middle of the area, began a volume at 22:16 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 10.2 hours before the alert went out and 135 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
- 2332 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 960 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 3.9
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.
NWS Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 12, 3:02 PM CDT, 2 hours 12 minutes earlier.
Area forecast discussion, Jul 12, 3:02 PM CDT, 2 hours 12 minutes before
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</html>Hazardous weather outlook, Jul 12, 2:48 PM CDT, 2 hours 26 minutes before
Hazardous Weather Outlook National Weather Service Jackson MS 248 PM CDT Sun Jul 12 2020 ARZ074-075-MSZ041-042-048-049-056-066-132000- Ashley-Chicot-Sharkey-Yazoo-Hinds-Rankin-Smith-Jones- 248 PM CDT Sun Jul 12 2020 This hazardous weather outlook is for portions of southeast Arkansas and central Mississippi. .DAY ONE...Tonight and Monday EXCESSIVE HEAT THREAT...Limited TIMING...Monday Increased heat stress conditions with maximum heat index values near 105 degrees are expected across the area from late morning through late afternoon Monday. Fatigue and heat exhaustion will become possible with prolonged outdoor activities. (https://www.weather.gov/images/jan/graphicast/3.png) .DAYS TWO THROUGH SEVEN...Monday night through Saturday Elevated heat stress conditions with heat index values of 105 to 110 degrees will be possible again during the middle of next week. (https://www.weather.gov/images/jan/graphicast/4.png) .SPOTTER CALL TO ACTION STATEMENT... The activation of storm spotters, HAM radio operators, and emergency management personnel in support of severe weather operations is not expected through next Saturday. MSZ018-019-025>039-043>046-050>052-057-058-132000- Bolivar-Sunflower-Leflore-Grenada-Carroll-Montgomery-Webster-Clay- Lowndes-Choctaw-Oktibbeha-Washington-Humphreys-Holmes-Attala- Winston-Noxubee-Madison MS-Leake-Neshoba-Kemper-Scott-Newton- Lauderdale-Jasper-Clarke- 248 PM CDT Sun Jul 12 2020 This hazardous weather outlook is for northeastern portions of central Mississippi. .DAY ONE...Tonight and Monday The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Monday night through Saturday Limited to elevated heat stress conditions with heat index values of 100 to 110 degrees will be possible again during the middle portion of next week. Fatigue and heat exhaustion will become possible with prolonged outdoor activities. (https://www.weather.gov/images/jan/graphicast/4.png) .SPOTTER CALL TO ACTION STATEMENT... The activation of storm spotters, HAM radio operators, and emergency management personnel in support of severe weather operations is not expected through next Saturday. LAZ007>009-015-016-023>026-MSZ040-047-053>055-059>065-072>074- 132000- Morehouse-West Carroll-East Carroll-Richland-Madison LA- Franklin LA-Catahoula-Tensas-Concordia-Issaquena-Warren-Claiborne- Copiah-Simpson-Jefferson-Adams-Franklin MS-Lincoln-Lawrence- Jefferson Davis-Covington-Marion-Lamar-Forrest- 248 PM CDT Sun Jul 12 2020 This hazardous weather outlook is for portions of northeast Louisiana, central Mississippi, south central Mississippi, and west central Mississippi. .DAY ONE...Tonight and Monday EXCESSIVE HEAT THREAT...Elevated TIMING...Monday Dangerous heat with maximum heat index values of 105 to 110 degrees is expected across the area from late morning through late afternoon Monday. Fatigue and heat exhaustion will become likely with prolonged outdoor activities. (https://www.weather.gov/images/jan/graphicast/3.png) .DAYS TWO THROUGH SEVEN...Monday night through Saturday Elevated heat stress conditions with heat index values of 105 to 110 degrees will be possible again on Tuesday and Wednesday. (https://www.weather.gov/images/jan/graphicast/4.png) .SPOTTER CALL TO ACTION STATEMENT... The activation of storm spotters, HAM radio operators, and emergency management personnel in support of severe weather operations is not expected through next Saturday. DL && ...HAZARD LEGEND... *EXCESSIVE HEAT* Extreme...Maximum heat index greater than 110 degrees for 3 or more days in a row and/or air temperatures greater than 107 degrees. Significant...Maximum heat index greater than 110 degrees and/or air temperatures greater than 105 degrees. Elevated...Maximum heat index 105 to 110 degrees and/or air temperatures greater than 103 degrees. Limited...Maximum heat index near 105 degrees and/or air temperatures 100 to 103 degrees. ...USEFUL WEATHER WEB PAGES (URLS)... NWS JAN Home page... https://www.weather.gov/jan Stay Aware, Stay Safe NWS JAN Briefing Page... https://www.weather.gov/jan/safe Latest Weather Briefing... https://www.weather.gov/jan/weather_briefing Tropical page... https://www.weather.gov/srh/tropical?office=jan National Hurricane Center Home Page... https://www.nhc.noaa.gov/ Find NWS JAN on Facebook... https://www.facebook.com/NWSJacksonMS Follow NWS JAN on Twitter... @NWSJacksonMS Follow NWS JAN on Youtube... https://www.youtube.com/user/NWSJacksonMiss
In the hours before
Special weather statement, Jul 12, 1:41 PM CDT, 3 hours 33 minutes before
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</html>Local storm report, Jul 12, 2:03 PM CDT, 3 hours 11 minutes before
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</html>Local storm report, Jul 12, 2:04 PM CDT, 3 hours 10 minutes before
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</html>Special weather statement, Jul 12, 2:43 PM CDT, 2 hours 31 minutes before
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</html>Local storm report, Jul 12, 4:07 PM CDT, 1 hour 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
407 PM CDT SUN JUL 12 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0235 PM NON-TSTM WND GST 1 ENE QUITMAN 32.04N 88.70W
07/12/2020 E50 MPH CLARKE MS EMERGENCY MNGR
EMERGENCY MANAGER REPORTED A TREE ON A HOUSE
EAST OF QUITMAN RIGHT OFF OF HIGHWAY 18.
SUB-SEVERE WINDS GUST UP TO 50 MPH WAS
POSSIBLE.
&&
JNESpecial weather statement, Jul 12, 5:09 PM CDT, 5 minutes before
Special Weather Statement
National Weather Service Jackson MS
509 PM CDT Sun Jul 12 2020
MSZ058-122300-
Clarke MS-
509 PM CDT Sun Jul 12 2020
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL CLARKE COUNTY UNTIL 600
PM CDT...
At 508 PM CDT, Meteorologists were tracking a strong thunderstorm
over De Soto, or over Quitman, moving southeast at 55 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
This strong thunderstorm will be near...
Crandall around 520 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.
&&
LAT...LON 3190 8847 3189 8848 3186 8862 3185 8867
3198 8885 3219 8868 3209 8845
TIME...MOT...LOC 2208Z 310DEG 49KT 3200 8872
DBThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 7:02 AM CDT | Special Weather Statement | JAN | Montgomery | 43 min |
| Jul 12, 12:42 PM CDT | Severe Thunderstorm Warning | JAN | Clay, Lowndes | 63 min |
| Jul 12, 12:45 PM CDT | Special Weather Statement | JAN | Scott | 45 min |
| Jul 12, 1:21 PM CDT | Severe Thunderstorm Warning | JAN | Jasper, Newton, Scott | 39 min |
| Jul 12, 1:41 PM CDT | Special Weather Statement | JAN | Noxubee | 34 min |
| Jul 12, 2:43 PM CDT | Special Weather Statement | JAN | Lauderdale | 32 min |
| Jul 12, 2:51 PM CDT | Heat Advisory | JAN | Adams, Claiborne, Copiah, Covington, Forrest, Franklin and 9 more | 28 hr |
| Jul 12, 5:09 PM CDT | Special Weather Statement | JAN | Clarke | 51 min |
| Jul 12, 5:27 PM CDT | Special Weather Statement | JAN | Jones | 33 min |
| Jul 12, 6:11 PM CDT | Special Weather Statement | JAN | Adams | 34 min |
| Jul 12, 6:32 PM CDT | Special Weather Statement | JAN | Clarke | 58 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2020Every severe thunderstorm warning in 2020
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; radar from the NEXRAD Level II archive.