Alert archive / Mississippi / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 811

December 16, 20004 states

The Storm Prediction Center issued this severe thunderstorm watch at Dec 16, 2000, 1:30 PM CST for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Dec 16, 2000, 1:30 PM CST (19:30 UTC)
Expired
Dec 16, 2000, 7:00 PM CST
In force
6 hr
Issued by
the Storm Prediction Center

Counties Baldwin County, AL, Mobile County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL, Orleans Parish, LA, Saint Bernard Parish, LA, Saint Tammany Parish, LA, George County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Pearl River County, MS, Stone County, MS

Warnings issued inside it

5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Dec 16, 1:40 PM CSTSevere Thunderstorm WarningLIXHarrison35 min
Dec 16, 1:43 PM CSTSevere Thunderstorm WarningMOBGeorge, Stone62 min
Dec 16, 2:05 PM CSTSevere Thunderstorm WarningLIXHancock, Harrison25 min
Dec 16, 2:42 PM CSTSevere Thunderstorm WarningMOBMobile33 min
Dec 16, 4:50 PM CSTSevere Thunderstorm WarningMOBEscambia, Santa Rosa40 min

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.5 hours before the alert went out and 91 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 2000-12-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 745 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 2000-12-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 182 square meters per square second.1939587897Sfc1 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
745 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
516 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
182 m²/s²
0-3 km storm-relative helicity
216 m²/s²
Significant tornado parameter
0.7
Supercell composite
6.6

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The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 16, 10:15 AM CSTTornado WatchSPCAutauga, Bibb, Blount, Butler, Chilton, Choctaw and 37 more6 hr
Dec 16, 10:45 AM CSTTornado WatchSPCBarbour, Bullock, Chambers, Coffee, Coosa, Covington and 12 more5 hr
Dec 16, 2:30 PM CSTTornado WatchSPCCalhoun, Cherokee, Clay, Cleburne, DeKalb, Etowah and 2 more4 hr
Dec 16, 4:00 PM CSTTornado WatchSPCAutauga, Bibb, Blount, Butler, Calhoun, Chambers and 38 more6 hr
Dec 16, 4:00 PM CSTTornado WatchSPCBarbour, Bullock, Chambers, Coffee, Dale, Geneva and 6 more6 hr
Dec 16, 5:45 PM CSTTornado WatchSPCBay, Calhoun, Franklin, Gadsden, Gulf, Holmes and 9 more4 hr

Nearby

Severe Thunderstorm Watches in Mississippi, 2000Severe Thunderstorm Watches in Florida, 2000Severe Thunderstorm Watches in Louisiana, 2000Every severe thunderstorm watch in 2000

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.