Alert archive / Mississippi / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 292, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 15, 2018, 12:54 PM CDT for Clarke County, Jasper County, Mississippi. It was in force for 49 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 15, 2018, 12:54 PM CDT (17:54 UTC)
- Expired
- Jul 15, 2018, 1:43 PM CDT
- In force
- 49 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Clarke County, MS, Jasper County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 105 km from the middle of the area, began a volume at 17:54 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, 5.9 hours before the alert went out and 115 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
- 1517 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 925 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -974 m²/s²
- 0-3 km storm-relative helicity
- -960 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 15, 10:09 AM CDT, 2 hours 45 minutes earlier.
Area forecast discussion, Jul 15, 10:09 AM CDT, 2 hours 45 minutes before
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</html>Hazardous weather outlook, Jul 15, 5:26 AM CDT, 7 hours 28 minutes before
Hazardous Weather Outlook National Weather Service Jackson MS 526 AM CDT Sun Jul 15 2018 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 161030- Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar- Sunflower-Leflore-Grenada-Carroll-Montgomery-Webster-Clay-Lowndes- Choctaw-Oktibbeha-Washington-Humphreys-Holmes-Attala-Winston- Noxubee-Issaquena-Sharkey-Yazoo-Madison MS-Leake-Neshoba-Kemper- Warren-Hinds-Rankin-Scott-Newton-Lauderdale-Claiborne-Copiah- Simpson-Smith-Jasper-Clarke-Jefferson-Adams-Franklin MS-Lincoln- Lawrence-Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest- 526 AM CDT Sun Jul 15 2018 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, north central Mississippi, and south central Mississippi. .DAY ONE...Today and Tonight EXCESSIVE HEAT THREAT...Elevated TIMING...Today Participating in outdoor activities in hot and humid conditions may lead to heat related illness today. Precautions should be taken to avoid strenuous outdoor activities. Check on those vulnerable to heat stress. Stay hydrated and wear light, loose fitted clothing. (https://www.weather.gov/images/jan/graphicast/1.png) .DAYS TWO THROUGH SEVEN...Monday through Saturday Monday and Tuesday will remain hot and humid for much of the ArkLaMiss. Although scattered showers and thunderstorms may limit heat stress, heat index values may still approach 105 degrees each afternoon. Additional heat advisories may be needed. (https://www.weather.gov/images/jan/graphicast/2.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. 21 && ...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/jan/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
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 7:52 PM CDT | Special Weather Statement | JAN | Hinds | 53 min |
| Jul 14, 8:01 PM CDT | Special Weather Statement | JAN | Marion | 29 min |
| Jul 14, 8:25 PM CDT | Special Weather Statement | JAN | Lamar | 50 min |
| Jul 15, 3:55 AM CDT | Heat Advisory | JAN | Adams, Attala, Bolivar, Carroll, Choctaw, Claiborne and 41 more | 15 hr |
| Jul 15, 1:34 PM CDT | Severe Thunderstorm Warning | JAN | Newton | 41 min |
| Jul 15, 1:38 PM CDT | Special Weather Statement | JAN | Noxubee | 37 min |
| Jul 15, 1:42 PM CDT | Special Weather Statement | JAN | Lauderdale | 48 min |
| Jul 15, 1:56 PM CDT | Special Weather Statement | JAN | Jones | 34 min |
| Jul 15, 2:05 PM CDT | Special Weather Statement | JAN | Newton | 40 min |
| Jul 15, 2:42 PM CDT | Special Weather Statement | JAN | Covington | 48 min |
| Jul 15, 4:18 PM CDT | Special Weather Statement | JAN | Webster | 57 min |
| Jul 15, 4:44 PM CDT | Special Weather Statement | JAN | Webster | 46 min |
| Jul 15, 4:55 PM CDT | Special Weather Statement | JAN | Forrest | 50 min |
| Jul 15, 5:25 PM CDT | Special Weather Statement | JAN | Webster | 50 min |
| Jul 15, 5:41 PM CDT | Flash Flood Warning | JAN | Choctaw, Montgomery, Webster | 91 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2018Every severe thunderstorm warning in 2018
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.