Alert archive / Mississippi / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 344, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Aug 20, 2015, 2:32 PM CDT for Forrest County, Mississippi. It was in force for 47 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
- Aug 20, 2015, 2:32 PM CDT (19:32 UTC)
- Expired
- Aug 20, 2015, 3:19 PM CDT
- In force
- 47 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Forrest County, MS
The radar
The Mobile radar (KMOB), 112 km from the middle of the area, began a volume at 19:35 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
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.5 hours before the alert went out and 113 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
- 3379 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 522 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.9
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 Aug 20, 11:11 AM CDT, 3 hours 21 minutes earlier.
Area forecast discussion, Aug 20, 11:11 AM CDT, 3 hours 21 minutes before
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</html>Hazardous weather outlook, Aug 20, 2:03 PM CDT, 29 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 203 PM CDT THU AUG 20 2015 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 211915- ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND- MADISON-FRANKLIN-CATAHOULA-TENSAS-CONCORDIA-BOLIVAR-SUNFLOWER- LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY-LOWNDES-CHOCTAW- OKTIBBEHA-WASHINGTON-HUMPHREYS-HOLMES-ATTALA-WINSTON-NOXUBEE- ISSAQUENA-SHARKEY-YAZOO-LEAKE-NESHOBA-KEMPER-WARREN-HINDS-RANKIN- SCOTT-NEWTON-LAUDERDALE-CLAIBORNE-COPIAH-SIMPSON-SMITH-JASPER- CLARKE-JEFFERSON-ADAMS-LINCOLN-LAWRENCE-JEFFERSON DAVIS-COVINGTON- JONES-MARION-LAMAR-FORREST- 203 PM CDT THU AUG 20 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST ARKANSAS...NORTHEAST LOUISIANA...CENTRAL MISSISSIPPI...NORTH CENTRAL MISSISSIPPI...AND SOUTH CENTRAL MISSISSIPPI. .DAY ONE...TONIGHT AND FRIDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...FRIDAY NIGHT THROUGH WEDNESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .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 WEDNESDAY. 2 && ...HAZARD LEGEND... NO SHORT TERM HAZARDS EXPECTED. ...USEFUL WEATHER WEB PAGES (URLS)... NWS JAN HOME PAGE... WWW.WEATHER.GOV/JAN STAY AWARE, STAY SAFE NWS JAN BRIEFING PAGE... WWW.SRH.NOAA.GOV/JAN/?N=SAFE NWS JAN TROPICAL PAGE... WWW.SRH.NOAA.GOV/JAN/?N=TROPICAL NATIONAL HURRICANE CENTER HOME PAGE... WWW.NHC.NOAA.GOV/ FIND NWS JAN ON FACEBOOK... WWW.FACEBOOK.COM/NWSJACKSONMS FOLLOW NWS JAN ON TWITTER... @NWSJACKSONMS PLEASE CONVERT ALL WEB ADDRESSES TO LOWER CASE BEFORE ENTERING!
In the hours before
Special weather statement, Aug 20, 2:12 PM CDT, 20 minutes before
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</html>Special weather statement, Aug 20, 2:15 PM CDT, 17 minutes before
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</html>The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 2:12 PM CDT | Special Weather Statement | JAN | Marion | 48 min |
| Aug 20, 2:15 PM CDT | Special Weather Statement | JAN | Forrest | 45 min |
| Aug 20, 3:10 PM CDT | Special Weather Statement | JAN | Covington | 50 min |
| Aug 20, 3:26 PM CDT | Special Weather Statement | JAN | Rankin | 49 min |
| Aug 20, 3:33 PM CDT | Special Weather Statement | JAN | Newton | 42 min |
| Aug 20, 3:43 PM CDT | Special Weather Statement | JAN | Scott | 47 min |
| Aug 20, 4:03 PM CDT | Special Weather Statement | JAN | Newton | 42 min |
| Aug 20, 4:05 PM CDT | Special Weather Statement | JAN | Kemper | 40 min |
| Aug 20, 4:18 PM CDT | Special Weather Statement | JAN | Rankin | 27 min |
| Aug 20, 4:25 PM CDT | Flash Flood Warning | JAN | Newton, Scott | 3 hr |
| Aug 20, 4:47 PM CDT | Special Weather Statement | JAN | Rankin | 43 min |
| Aug 20, 4:48 PM CDT | Special Weather Statement | JAN | Clarke | 42 min |
| Aug 20, 5:11 PM CDT | Special Weather Statement | JAN | Jasper | 49 min |
| Aug 20, 5:13 PM CDT | Special Weather Statement | JAN | Lauderdale | 47 min |
| Aug 20, 5:20 PM CDT | Special Weather Statement | JAN | Noxubee | 40 min |
| Aug 20, 5:35 PM CDT | Special Weather Statement | JAN | Lauderdale | 25 min |
| Aug 20, 5:45 PM CDT | Special Weather Statement | JAN | Clarke | 45 min |
| Aug 20, 6:07 PM CDT | Special Weather Statement | JAN | Lauderdale | 38 min |
| Aug 20, 6:17 PM CDT | Flash Flood Warning | JAN | Rankin, Scott | 3 hr |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2015Every severe thunderstorm warning in 2015
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.