Alert archive / Mississippi / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 159, NWS New Orleans, LA

October 19, 2006Jackson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Oct 19, 2006, 1:38 PM CDT for Jackson County, Mississippi. It was in force for 37 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
Oct 19, 2006, 1:38 PM CDT (18:38 UTC)
Expired
Oct 19, 2006, 2:15 PM CDT
In force
37 min
Issued by
NWS New Orleans, LA
Area
Counties, with a storm outline in the text

County Jackson County, MS

The radar

The Mobile radar (KMOB), 44 km from the middle of the area, began a volume at 18:39 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.

IssuedProductOfficeLasted
Oct 19, 1:17 PM CDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.6 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2006-10-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1675 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 2006-10-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 square meters per square second.193958Sfc1 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
1675 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
521 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
270 m²/s²
Significant tornado parameter
1.5
Supercell composite
7.6

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 Oct 19, 1:11 PM CDT, 27 minutes earlier.

Area forecast discussion, Oct 19, 1:11 PM CDT, 27 minutes before
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Hazardous weather outlook, Oct 19, 11:09 AM CDT, 2 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1109 AM CDT THU OCT 19 2006

GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077-
080>082-201100-
LAKE PONTCHARTRAIN AND LAKE MAUREPAS-
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM-
COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM-
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA FROM 20 TO 60 NM-
COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER FROM 20 TO 60 NM-POINTE COUPEE-WEST FELICIANA-
EAST FELICIANA-ST. HELENA-TANGIPAHOA-WASHINGTON-ST. TAMMANY-
IBERVILLE-WEST BATON ROUGE-EAST BATON ROUGE-ASCENSION-LIVINGSTON-
ASSUMPTION-ST. JAMES-ST. JOHN THE BAPTIST-UPPER LAFOURCHE-
ST. CHARLES-UPPER JEFFERSON-ORLEANS-UPPER PLAQUEMINES-
UPPER ST. BERNARD-UPPER TERREBONNE-LOWER TERREBONNE-
LOWER LAFOURCHE-LOWER JEFFERSON-LOWER PLAQUEMINES-
LOWER ST. BERNARD-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER-
HANCOCK-HARRISON-JACKSON-
1109 AM CDT THU OCT 19 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF GULF OF
MEXICO...SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

.DAY ONE...THIS AFTERNOON AND TONIGHT

...A TORNDAO WATCH IS IN EFFECT FOR PORTIONS OF SOUTH-CENTRAL AND
SOUTHEAST LOUISIANA AND FOR PORTIONS OF SOUTHERN MISSISSIPPI...
...A FLOOD WATCH IS IN EFFECT FOR PORTIONS OF SOUTH-CENTRAL
LOUISIANA AND FOR SOUTHWEST MISSISSIPPI THROUGH THIS AFTERNOON...

.THUNDERSTORMS...
STRONG TO SEVERE THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AS A
COLD FRONT MOVES THROUGH THE OUTLOOK AREA. THE PRIMARY HAZARDS
WITH THESE THUNDERSTORMS ARE ISOLATED TORNADOES...DAMAGING WIND
GUSTS...VERY HEAVY RAINFALL AND FREQUENT CLOUD TO GROUND
LIGHTNING. PONDING ON ROADS AND IN LOW LYING AREAS IS ALSO
POSSIBLE WITH THE HEAVY RAINFALL.

.MARINE HAZARDS...
A SMALL CRAFT ADVISORY WILL BE IN EFFECT FOR THE GULF COASTAL WATERS
AND TIDAL LAKES TONIGHT. STRONG NORTHWEST WINDS AROUND 20 TO 25
KNOTS ARE EXPECTED TO DEVELOP BEHIND THE PASSAGE OF THE COLD FRONT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED FRIDAY AND SATURDAY.

THUNDERSTORMS ARE AGAIN POSSIBLE ON SUNDAY AS ANOTHER COLD FRONT
MOVES THROUGH THE REGION.

.SPOTTER INFORMATION STATEMENT...

THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS IS REQUESTED TODAY. IN ADDITION...FIRST RESPONSE AGENCIES
ARE REQUESTED TO RELAY ANY SEVERE WEATHER OR FLOODING REPORTS TO THE
NATIONAL WEATHER SERVICE WHEN TIME PERMITS.

In the hours before

Special weather statement, Oct 19, 10:50 AM CDT, 2 hours 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1050 AM CDT THU OCT 19 2006

LAZ038>040-049-050-056>058-191645-
ASCENSION-ASSUMPTION-LIVINGSTON-ST JAMES-ST JOHN THE BAPTIST-
ST TAMMANY-TANGIPAHOA-WASHINGTON-
1050 AM CDT THU OCT 19 2006

...LINE OF STRONG THUNDERSTORMS APPROACHING THE FLORIDA AND RIVER
PARISHES...

AT 1044 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS EXTENDING FROM NEAR MOUNT HERMAN
THROUGH GONZALES TO NEAR PIERRE PART.  THIS LINE OF THUNDERSTORMS
IS MOVING TO THE EAST AT 35 MPH...AND WILL AFFECT AREAS IN AND NEAR
FRANKLINTON...COVINGTON...HAMMOND...RESERVE...GONZALES...KILLIAN...
GRAMERCY...DONALDSONVILLE...AND NAPOLEONVILLE THROUGH 1145 AM.
THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING WINDS GUSTING TO
45 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...AND LOCALLY HEAVY
RAINFALL OF 1 TO 2 INCHES.

WHEN THUNDERSTORMS ARE OCCURRING...MOVE INDOORS.  DO NOT STAND BY
WINDOWS.  UNLESS IT IS AN EMERGENCY...AVOID USING TELEPHONES AND
ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED.
Special weather statement, Oct 19, 11:46 AM CDT, 1 hour 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1146 AM CDT THU OCT 19 2006

LAZ039-040-056>065-MSZ077-080-191800-
ASSUMPTION-HANCOCK-ORLEANS-PEARL RIVER-ST CHARLES-ST JAMES-
ST JOHN THE BAPTIST-ST TAMMANY-UPPER JEFFERSON-UPPER LAFOURCHE-
UPPER PLAQUEMINES-UPPER ST BERNARD-UPPER TERREBONNE-WASHINGTON-
1146 AM CDT THU OCT 19 2006

...LINE OF STRONG THUNDERSTORMS APPROACHING COASTAL MISSISSIPPI
AND THE NEW ORLEANS METRO AREA...

AT 1143 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS EXTENDING FROM NEAR BOGALUSA THROUGH
PONCHATOULA TO NEAR NAPOLEONVILLE.  THIS LINE OF THUNDERSTORMS IS
MOVING TO THE EAST AT 35 MPH...AND WILL AFFECT AREAS IN AND NEAR
PICAYUNE...BAY SAINT LOUIS...SLIDELL...CHALMETTE...NEW ORLEANS...
METAIRIE...LAPLACE...LUTCHER...NORCO...THIBODAUX...AND GRAY THROUGH
1 PM. THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING WINDS
GUSTING TO 45 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...AND
LOCALLY HEAVY RAINFALL OF 1 TO 2 INCHES.

WHEN THUNDERSTORMS ARE OCCURRING...MOVE INDOORS.  DO NOT STAND BY
WINDOWS.  UNLESS IT IS AN EMERGENCY...AVOID USING TELEPHONES AND
ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED.

32
Local storm report, Oct 19, 12:40 PM CDT, 58 minutes before
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Local storm report, Oct 19, 12:52 PM CDT, 46 minutes before
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Local storm report, Oct 19, 12:56 PM CDT, 42 minutes before
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Special weather statement, Oct 19, 1:12 PM CDT, 26 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 19, 8:29 AM CDTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana61 min
Oct 19, 9:21 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton Rouge54 min
Oct 19, 10:05 AM CDTSevere Thunderstorm WarningLIXAscension, Livingston, Saint Helena, Tangipahoa40 min
Oct 19, 11:53 AM CDTSpecial Marine WarningLIX67 min
Oct 19, 1:18 PM CDTSpecial Marine WarningLIX87 min
Oct 19, 7:56 AM CDTSevere Thunderstorm WarningLIXWilkinson64 min
Oct 19, 8:46 AM CDTTornado WarningLIXWilkinson29 min
Oct 19, 9:15 AM CDTSevere Thunderstorm WarningLIXAmite, Wilkinson30 min
Oct 19, 12:14 PM CDTTornado WarningLIXPearl River31 min
Oct 19, 1:01 PM CDTSevere Thunderstorm WarningLIXHarrison29 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2006Every severe thunderstorm warning in 2006

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.