Alert archive / Mississippi / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 155, NWS Jackson, MS

April 2, 20094 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 2, 2009, 5:36 PM CDT for 4 counties in Mississippi. It was in force for 39 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: Apr 2, 2009, 5:36 PM CDT (22:36 UTC)
Expired: Apr 2, 2009, 6:15 PM CDT
In force: 39 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Carroll County, MS, Grenada County, MS, Leflore County, MS, Montgomery County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 143 km from the middle of the area, began a volume at 22:35 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 2, 3:56 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.6 hours before the alert went out and 139 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1573 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 460 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 211 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.7

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 Apr 2, 4:29 PM CDT, 1 hour 7 minutes earlier.

Area forecast discussion, Apr 2, 4:29 PM CDT, 1 hour 7 minutes before

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Hazardous weather outlook, Apr 2, 3:09 PM CDT, 2 hours 27 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
309 PM CDT THU APR 2 2009

ARZ074-075-MSZ018-019-025>039-032015-
ASHLEY-CHICOT-BOLIVAR-SUNFLOWER-LEFLORE-GRENADA-CARROLL-
MONTGOMERY-WEBSTER-CLAY-LOWNDES-CHOCTAW-OKTIBBEHA-WASHINGTON-
HUMPHREYS-HOLMES-ATTALA-WINSTON-NOXUBEE-
309 PM CDT THU APR 2 2009

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

.DAY ONE...TONIGHT AND FRIDAY

ISOLATED STRONG TO SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE
HAIL AND WIND GUSTS OF 40 TO 50 MPH WILL BE POSSIBLE LATE THIS
AFTERNOON. THE RISK FOR THUNDERSTORMS AND SEVERE WEATHER WILL END
QUICKLY DURING THE EARLY EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY NIGHT THROUGH WEDNESDAY

A FEW STRONG TO SEVERE THUNDERSTORMS COULD DEVELOP IN THE OUTLOOK
AREA SUNDAY AS A STRONG UPPER LEVEL DISTURBANCE APPROACHES. STAY
TUNED TO LATER FORECASTS AND OUTLOOKS CONCERNING THIS POTENTIAL.

COLD HIGH PRESSURE MOVING INTO THE AREA COULD SET THE STAGE FOR A
LATE SEASON FREEZE MONDAY NIGHT AND AGAIN TUESDAY NIGHT. PERSONS IN
THE ARKLAMISS WITH SENSITIVE OUTDOOR VEGETATION SHOULD KEEP THIS IN
MIND.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS...MAY STILL BE NEEDED LATE THIS AFTERNOON.

LAZ007>009-015-016-023>026-MSZ040>066-072>074-032015-
MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-MADISON LA-
FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-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-
309 PM CDT THU APR 2 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR .

.DAY ONE...TONIGHT AND FRIDAY

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...FRIDAY NIGHT THROUGH WEDNESDAY

A FEW STRONG TO SEVERE THUNDERSTORMS COULD DEVELOP IN THE OUTLOOK
AREA SUNDAY AS A STRONG UPPER LEVEL DISTURBANCE APPROACHES. STAY
TUNED TO LATER FORECASTS AND OUTLOOKS CONCERNING THIS POTENTIAL.

COLD HIGH PRESSURE MOVING INTO THE AREA COULD SET THE STAGE FOR A
LATE SEASON FREEZE MONDAY NIGHT AND AGAIN TUESDAY NIGHT. PERSONS IN
THE ARKLAMISS WITH SENSITIVE OUTDOOR VEGETATION SHOULD KEEP THIS IN
MIND.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS...MAY BE NEEDED

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

EC

In the hours before

Local storm report, Apr 2, 4:25 PM CDT, 1 hour 11 minutes before

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Local storm report, Apr 2, 4:27 PM CDT, 1 hour 9 minutes before

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Special weather statement, Apr 2, 4:27 PM CDT, 1 hour 9 minutes before

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Local storm report, Apr 2, 4:59 PM CDT, 37 minutes before

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Special weather statement, Apr 2, 5:01 PM CDT, 35 minutes before

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Local storm report, Apr 2, 5:21 PM CDT, 15 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 9:50 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar	55 min
Apr 2, 10:21 AM CDT	Severe Thunderstorm Warning	JAN	Sunflower	39 min
Apr 2, 10:57 AM CDT	Severe Thunderstorm Warning	JAN	Sunflower	18 min
Apr 2, 11:37 AM CDT	Severe Thunderstorm Warning	JAN	Lawrence, Lincoln	53 min
Apr 2, 11:43 AM CDT	Severe Thunderstorm Warning	JAN	Rankin	62 min
Apr 2, 11:44 AM CDT	Severe Thunderstorm Warning	JAN	Copiah, Simpson	46 min
Apr 2, 12:18 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Montgomery, Webster	57 min
Apr 2, 12:19 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence	56 min
Apr 2, 12:22 PM CDT	Severe Thunderstorm Warning	JAN	Scott, Smith	53 min
Apr 2, 12:23 PM CDT	Severe Thunderstorm Warning	JAN	Simpson, Smith	67 min
Apr 2, 12:32 PM CDT	Severe Thunderstorm Warning	JAN	Leake	43 min
Apr 2, 12:44 PM CDT	Severe Thunderstorm Warning	JAN	Marion	47 min
Apr 2, 12:51 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Winston	39 min
Apr 2, 12:54 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba	66 min
Apr 2, 1:05 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Clay, Oktibbeha, Webster	40 min
Apr 2, 1:14 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Neshoba, Newton, Scott, Smith	49 min
Apr 2, 1:16 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Smith	59 min
Apr 2, 1:18 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	57 min
Apr 2, 1:21 PM CDT	Severe Thunderstorm Warning	JAN	Winston	39 min
Apr 2, 1:34 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	56 min
Apr 2, 1:44 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jones	46 min
Apr 2, 1:47 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Noxubee, Winston	58 min
Apr 2, 1:49 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	56 min
Apr 2, 1:50 PM CDT	Tornado Warning	JAN	Clay	9 min
Apr 2, 1:58 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee, Winston	62 min
Apr 2, 2:16 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	38 min
Apr 2, 2:24 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes	41 min
Apr 2, 2:33 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee	26 min
Apr 2, 4:12 PM CDT	Severe Thunderstorm Warning	JAN	Washington	48 min
Apr 2, 4:48 PM CDT	Severe Thunderstorm Warning	JAN	Leflore, Sunflower	57 min
Apr 2, 5:16 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes	22 min
Apr 2, 6:14 PM CDT	Severe Thunderstorm Warning	JAN	Webster	46 min
Apr 2, 6:46 PM CDT	Severe Thunderstorm Warning	JAN	Clay	59 min
Apr 2, 9:49 AM CDT	Severe Thunderstorm Warning	JAN	Morehouse, West Carroll	41 min
Apr 2, 9:55 AM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Franklin, Richland	50 min
Apr 2, 10:10 AM CDT	Severe Thunderstorm Warning	JAN	Madison, Tensas	65 min
Apr 2, 10:13 AM CDT	Severe Thunderstorm Warning	JAN	East Carroll, West Carroll	47 min
Apr 2, 8:56 AM CDT	Severe Thunderstorm Warning	JAN	Ashley	20 min
Apr 2, 3:47 PM CDT	Severe Thunderstorm Warning	JAN	Ashley, Chicot	43 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2009 Every severe thunderstorm warning in 2009

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.