Alert archive / Mississippi / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 507, NWS Jackson, MS

August 22, 2010Yazoo County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Aug 22, 2010, 6:23 PM CDT for Yazoo County, Mississippi. It was in force for 52 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 22, 2010, 6:23 PM CDT (23:23 UTC)
Expired
Aug 22, 2010, 7:15 PM CDT
In force
52 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon

County Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 68 km from the middle of the area, began a volume at 23:23 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, 11.4 hours before the alert went out and 289 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.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2010-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2604 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2010-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2604 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
724 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 22, 5:35 PM CDT, 48 minutes earlier.

Area forecast discussion, Aug 22, 5:35 PM CDT, 48 minutes before
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Hazardous weather outlook, Aug 22, 3:13 PM CDT, 3 hours 10 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
313 PM CDT SUN AUG 22 2010

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
232015-
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-
313 PM CDT SUN AUG 22 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI...
NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS.

.DAY ONE...TONIGHT AND MONDAY

ISOLATED TO SCATTERED SEVERE STORMS WILL BE POSSIBLE THROUGH THIS
EVENING...ESPECIALLY FOR LOCATIONS ALONG AND SOUTH OF A GREENVILLE TO
LOUISVILLE LINE. DAMAGING WIND GUSTS BETWEEN 60 AND 70 MPH WILL BE
THE MAIN RISK...ALONG WITH LOCALLY HEAVY RAINFALL AND CONTINUOUS
LIGHTNING.

HOT AND HUMID CONDITIONS WILL CONTINUE THROUGH THIS AFTERNOON AS HEAT
INDICES RISE TO BETWEEN 108 AND 114 DEGREES. COOLER DAYTIME
CONDITIONS ARE EXPECTED ON MONDAY. THE HEAT ADVISORY REMAINS IN
EFFECT UNTIL 7 PM CDT THIS EVENING.

.DAYS TWO THROUGH SEVEN...MONDAY NIGHT THROUGH SATURDAY

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 SATURDAY.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.

BK

In the hours before

Special weather statement, Aug 22, 6:10 PM CDT, 13 minutes before
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Local storm report, Aug 22, 6:13 PM CDT, 10 minutes before
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Local storm report, Aug 22, 6:16 PM CDT, 7 minutes before
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Local storm report, Aug 22, 6:18 PM CDT, 5 minutes before
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Local storm report, Aug 22, 6:21 PM CDT, 2 minutes before
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Special weather statement, Aug 22, 6:22 PM CDT, 1 minute before
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The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 22, 1:54 PM CDTSevere Thunderstorm WarningJANLauderdale36 min
Aug 22, 2:43 PM CDTSevere Thunderstorm WarningJANClarke, Lauderdale47 min
Aug 22, 2:50 PM CDTSevere Thunderstorm WarningJANYazoo40 min
Aug 22, 3:17 PM CDTSevere Thunderstorm WarningJANHinds, Madison, Rankin43 min
Aug 22, 3:28 PM CDTFlash Flood WarningJANClarke, Lauderdale83 min
Aug 22, 3:31 PM CDTSevere Thunderstorm WarningJANAttala, Leake44 min
Aug 22, 3:49 PM CDTSevere Thunderstorm WarningJANAttala, Carroll, Holmes26 min
Aug 22, 3:53 PM CDTSevere Thunderstorm WarningJANHolmes37 min
Aug 22, 4:01 PM CDTSevere Thunderstorm WarningJANLauderdale, Newton29 min
Aug 22, 4:14 PM CDTSevere Thunderstorm WarningJANRankin, Simpson, Smith31 min
Aug 22, 4:20 PM CDTSevere Thunderstorm WarningJANLeake, Neshoba25 min
Aug 22, 4:24 PM CDTSevere Thunderstorm WarningJANAttala, Holmes, Madison, Yazoo36 min
Aug 22, 4:35 PM CDTSevere Thunderstorm WarningJANClarke, Jasper, Leake, Neshoba, Newton, Scott and 1 more40 min
Aug 22, 4:44 PM CDTFlash Flood WarningJANWashington91 min
Aug 22, 4:47 PM CDTSevere Thunderstorm WarningJANWashington28 min
Aug 22, 5:15 PM CDTSevere Thunderstorm WarningJANJasper, Jones, Leake, Scott, Smith45 min
Aug 22, 5:16 PM CDTSevere Thunderstorm WarningJANIssaquena59 min
Aug 22, 5:26 PM CDTSevere Thunderstorm WarningJANHumphreys, Issaquena, Sharkey, Yazoo49 min
Aug 22, 5:28 PM CDTSevere Thunderstorm WarningJANForrest, Jones47 min
Aug 22, 5:33 PM CDTFlash Flood WarningJANJasper, Scott, Smith117 min
Aug 22, 5:38 PM CDTFlash Flood WarningJANForrest, Jasper, Jones, Smith2 hr
Aug 22, 5:48 PM CDTSevere Thunderstorm WarningJANCovington42 min
Aug 22, 5:51 PM CDTSevere Thunderstorm WarningJANClaiborne, Jefferson54 min
Aug 22, 6:13 PM CDTSevere Thunderstorm WarningJANCovington, Jefferson Davis, Lamar, Marion47 min
Aug 22, 4:12 PM CDTSevere Thunderstorm WarningJANMorehouse48 min
Aug 22, 4:56 PM CDTSevere Thunderstorm WarningJANMorehouse49 min
Aug 22, 3:35 PM CDTSevere Thunderstorm WarningJANAshley40 min
Aug 22, 3:49 PM CDTFlash Flood WarningJANAshley, Chicot116 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2010Every severe thunderstorm warning in 2010

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.