Alert archive / Mississippi / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 27, NWS New Orleans, LA

April 24, 2010Jackson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 24, 2010, 2:16 AM CDT for Jackson County, Mississippi. It was in force for 29 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 24, 2010, 2:16 AM CDT (07:16 UTC)
Expired: Apr 24, 2010, 2:45 AM CDT
In force: 29 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

County Jackson County, MS

The radar

The Mobile radar (KMOB), 44 km from the middle of the area, began a volume at 07:20 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 00:00Z, 7.3 hours before the alert went out and 106 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: 1334 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 454 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 477 m²/s²
0-3 km storm-relative helicity: 593 m²/s²
Significant tornado parameter: 4.9
Supercell composite: 19.7

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 New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 23, 11:53 PM CDT, 2 hours 23 minutes earlier.

Area forecast discussion, Apr 23, 11:53 PM CDT, 2 hours 23 minutes before

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Hazardous weather outlook, Apr 23, 7:05 PM CDT, 7 hours 11 minutes before

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In the hours before

Special weather statement, Apr 24, 2:11 AM CDT, 5 minutes before

MSZ082-240815-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
211 AM CDT SAT APR 24 2010

...STRONG THUNDERSTORM MOVING NORTHEAST AFFECTING JACKSON COUNTY...

AT 210 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 12 MILES NORTHEAST OF ST. MARTIN...OR ABOUT 7
MILES NORTHWEST OF VANCLEAVE...MOVING NORTHEAST AT 40 MPH.

THE STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND...VANCLEAVE
AND WADE

THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND PEA TO
DIME SIZE HAIL. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS
STORM HAS PASSED.

Special weather statement, Apr 24, 2:12 AM CDT, 4 minutes before

MSZ081-082-240745-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
212 AM CDT SAT APR 24 2010

...STRONG THUNDERSTORM MOVING NORTHEAST AFFECTING JACKSON COUNTY...
HARRISON COUNTY...

AT 210 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 8 MILES NORTHWEST OF BILOXI...OR ABOUT 6 MILES
EAST OF LYMAN...MOVING NORTHEAST AT 40 MPH.

THE STRONG THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF THE
INDICATED COUNTIES.

THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND PEA TO
DIME SIZE HAIL. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS
STORM HAS PASSED.

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 24, 5:41 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, Livingston, Tangipahoa	64 min
Apr 24, 5:54 AM CDT	Tornado Warning	LIX	Tangipahoa, Washington	23 min
Apr 24, 6:21 AM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa, Washington	54 min
Apr 24, 7:49 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, West Baton Rouge, West Feliciana	26 min
Apr 24, 8:08 AM CDT	Tornado Warning	LIX	East Feliciana, Saint Helena	37 min
Apr 24, 8:30 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, Livingston, Saint Helena, Tangipahoa	42 min
Apr 24, 8:48 AM CDT	Special Marine Warning	LIX		42 min
Apr 24, 9:10 AM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa, Washington	41 min
Apr 24, 9:19 AM CDT	Special Marine Warning	LIX		56 min
Apr 24, 9:26 AM CDT	Severe Thunderstorm Warning	LIX	Washington	64 min
Apr 24, 11:40 AM CDT	Special Marine Warning	LIX		65 min
Apr 24, 12:33 PM CDT	Special Marine Warning	LIX		31 min
Apr 24, 12:40 PM CDT	Special Marine Warning	LIX		35 min
Apr 24, 2:41 PM CDT	Special Marine Warning	LIX		64 min
Apr 24, 3:41 PM CDT	Small Craft Advisory	LIX		5 hr
Apr 24, 3:52 PM CDT	Coastal Flood Warning	LIX		8 hr
Apr 24, 4:27 PM CDT	Special Marine Warning	LIX		93 min
Apr 24, 4:54 PM CDT	Special Marine Warning	LIX		51 min
Apr 24, 5:45 AM CDT	Severe Thunderstorm Warning	LIX	Walthall	30 min
Apr 24, 10:03 AM CDT	Tornado Warning	LIX	Pearl River	27 min
Apr 24, 4:27 PM CDT	Coastal Flood Advisory	LIX		3 hr

Nearby

Severe Thunderstorm Warnings in Mississippi, 2010 Every 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.