Alert archive / Mississippi / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 154, NWS New Orleans, LA

December 23, 2015Jackson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Dec 23, 2015, 5:32 AM CST for Jackson County, Mississippi. It was in force for 58 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: Dec 23, 2015, 5:32 AM CST (11:32 UTC)
Expired: Dec 23, 2015, 6:30 AM CST
In force: 58 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Jackson County, MS

The radar

The Mobile radar (KMOB), 44 km from the middle of the area, began a volume at 11:35 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 00:00Z, 11.5 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: 84 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 765 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 211 m²/s²
0-3 km storm-relative helicity: 193 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 New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Dec 23, 4:06 AM CST, 1 hour 26 minutes earlier.

Area forecast discussion, Dec 23, 4:06 AM CST, 1 hour 26 minutes before

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Hazardous weather outlook, Dec 23, 3:49 AM CST, 1 hour 43 minutes before

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In the hours before

Special weather statement, Dec 23, 12:08 AM CST, 5 hours 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1208 AM CST WED DEC 23 2015

LAZ049-050-056>058-230700-
LIVINGSTON-ASSUMPTION-ST. JOHN THE BAPTIST-ASCENSION-ST. JAMES-
1208 AM CST WED DEC 23 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN LIVINGSTON...
NORTHEASTERN ASSUMPTION...ST. JAMES...NORTHWESTERN ST. JOHN THE
BAPTIST AND CENTRAL ASCENSION PARISHES...

AT 1206 AM CST...A STRONG THUNDERSTORM WAS NEAR CONVENT...OR 7 MILES
SOUTHEAST OF DONALDSONVILLE...MOVING NORTHEAST AT 70 MPH.

WINDS IN EXCESS OF 40 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
GONZALES...DONALDSONVILLE...GRAMERCY...LUTCHER...SORRENTO...FRENCH
SETTLEMENT...PORT VINCENT...BELLE ROSE...WHITEHALL...CONVENT...
GARYVILLE AND KILLIAN.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3048 9070 3035 9048 3034 9047 3034 9049
      3030 9054 3030 9056 3029 9056 3026 9058
      3024 9058 3022 9057 3020 9060 3017 9057
      3017 9055 2991 9086 3004 9106
TIME...MOT...LOC 0606Z 226DEG 60KT 3005 9089

Special weather statement, Dec 23, 1:30 AM CST, 4 hours 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
130 AM CST WED DEC 23 2015

LAZ059-061-063-066>069-230830-
UPPER LAFOURCHE-UPPER JEFFERSON-UPPER PLAQUEMINES-LOWER
JEFFERSON-LOWER PLAQUEMINES-LOWER LAFOURCHE-LOWER TERREBONNE-
130 AM CST WED DEC 23 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN LAFOURCHE...WEST
CENTRAL PLAQUEMINES AND CENTRAL JEFFERSON PARISHES...

AT 130 AM CST...A STRONG THUNDERSTORM WAS NEAR GOLDEN MEADOW...OR 7
MILES SOUTH OF GALLIANO...MOVING NORTHEAST AT 30 MPH.

WINDS IN EXCESS OF 40 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
GALLIANO...CUT OFF...GOLDEN MEADOW...JEAN LAFITTE...MYRTLE GROVE...
LAFITTE AND BARATARIA.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 2923 9029 2931 9034 2924 9040 2935 9043
      2933 9049 2934 9049 2977 9005 2953 8978
      2946 8990 2951 8993 2944 8994 2948 9001
      2941 8999 2941 9000 2935 9015 2933 9012
TIME...MOT...LOC 0730Z 231DEG 25KT 2933 9034

Local storm report, Dec 23, 2:04 AM CST, 3 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
204 AM CST WED DEC 23 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1230 AM     HAIL             SORRENTO                30.19N 90.87W
12/23/2015  E1.25 INCH       ASCENSION          LA   PUBLIC

            NEARLY AA BATTERY SIZED HAIL FELL IN SORRENTO.

&&

MEFFERSO

Special weather statement, Dec 23, 5:27 AM CST, 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 22, 7:05 PM CST	Special Marine Warning	LIX		40 min
Dec 22, 7:42 PM CST	Special Marine Warning	LIX		18 min
Dec 22, 8:17 PM CST	Special Weather Statement	LIX	Terrebonne	43 min
Dec 22, 8:31 PM CST	Severe Thunderstorm Warning	LIX	Lafourche, Terrebonne	29 min
Dec 22, 9:03 PM CST	Special Weather Statement	LIX	Jefferson	42 min
Dec 22, 9:37 PM CST	Special Weather Statement	LIX	Lafourche	38 min
Dec 22, 10:55 PM CST	Special Marine Warning	LIX		65 min
Dec 22, 10:58 PM CST	Special Weather Statement	LIX	Lafourche	47 min
Dec 22, 11:57 PM CST	Special Marine Warning	LIX		93 min
Dec 23, 12:08 AM CST	Special Weather Statement	LIX	Ascension, Livingston, Saint James	52 min
Dec 23, 1:30 AM CST	Special Weather Statement	LIX	Jefferson	60 min
Dec 23, 1:35 AM CST	Special Marine Warning	LIX		55 min
Dec 23, 1:50 AM CST	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Plaquemines	55 min
Dec 23, 2:02 AM CST	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	43 min
Dec 23, 2:24 AM CST	Tornado Warning	LIX	Jefferson, Lafourche	51 min
Dec 23, 2:27 AM CST	Special Marine Warning	LIX		63 min
Dec 23, 3:01 AM CST	Special Marine Warning	LIX		29 min
Dec 23, 3:20 AM CST	Tornado Warning	LIX	Plaquemines, Saint Bernard	25 min
Dec 23, 3:30 AM CST	Small Craft Advisory	LIX		18 hr
Dec 23, 3:38 AM CST	Special Marine Warning	LIX		97 min
Dec 23, 5:10 AM CST	Special Marine Warning	LIX		95 min
Dec 23, 2:26 AM CST	Tornado Warning	LIX	Wilkinson	19 min
Dec 23, 2:34 AM CST	Severe Thunderstorm Warning	LIX	Jackson	26 min
Dec 23, 5:27 AM CST	Special Weather Statement	LIX	Jackson	63 min
Dec 23, 7:01 AM CST	Areal Flood Warning	LIX	Jackson	119 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2015 Every 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.