Alert archive / Mississippi / Tornado Watches in 2005

Tornado Watch 882

November 27, 2005Ashley County, Chicot County, Arkansas; 9 parishes in Louisiana; 29 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Nov 27, 2005, 11:44 PM CST for Ashley County, Chicot County, Arkansas; 9 parishes in Louisiana; 29 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Nov 27, 2005, 11:44 PM CST (05:44 UTC)
Expired
Nov 28, 2005, 6:00 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 40 counties

Ashley County, AR, Chicot County, AR, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Adams County, MS, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Copiah County, MS, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Lawrence County, MS, Leake County, MS, Leflore County, MS, Lincoln County, MS, Madison County, MS, Montgomery County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 84 km from the middle of the area, began a volume at 05:46 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Nov 28, 12:26 AM CSTSevere Thunderstorm WarningJANMorehouse, Richland34 min
Nov 28, 1:01 AM CSTSevere Thunderstorm WarningJANChicot44 min
Nov 28, 1:21 AM CSTTornado WarningJANEast Carroll, West Carroll39 min
Nov 28, 1:34 AM CSTSevere Thunderstorm WarningJANWashington41 min
Nov 28, 1:44 AM CSTTornado WarningJANIssaquena, Washington46 min
Nov 28, 2:03 AM CSTTornado WarningJANHumphreys, Sharkey, Sunflower, Washington42 min
Nov 28, 2:09 AM CSTSevere Thunderstorm WarningJANIssaquena, Sharkey66 min
Nov 28, 2:13 AM CSTTornado WarningJANIssaquena, Sharkey32 min
Nov 28, 2:43 AM CSTTornado WarningJANHumphreys, Yazoo47 min
Nov 28, 2:44 AM CSTTornado WarningJANIssaquena, Warren31 min
Nov 28, 3:19 AM CSTTornado WarningJANHolmes41 min
Nov 28, 3:36 AM CSTTornado WarningJANHinds, Madison, Yazoo39 min
Nov 28, 5:10 AM CSTTornado WarningJANRankin22 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 5.7 hours before the alert went out and 75 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, Jackson, MS at 00:00Z on 2005-11-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 197 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, Jackson, MS at 00:00Z on 2005-11-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 257 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
197 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
257 m²/s²
0-3 km storm-relative helicity
359 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS20 KWNS 280543
SEL2  
SPC WW 280543
ARZ000-LAZ000-MSZ000-281200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 882
NWS STORM PREDICTION CENTER NORMAN OK
1145 PM CST SUN NOV 27 2005

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       SOUTHEAST ARKANSAS
       NORTHEAST LOUISIANA
       CENTRAL AND WESTERN MISSISSIPPI

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1145 PM UNTIL
600 AM CST.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE MILES
EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHEAST OF GREENWOOD
MISSISSIPPI TO 25 MILES SOUTHEAST OF NATCHEZ MISSISSIPPI.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU2).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 879...WW 880...WW 881...

DISCUSSION...LINE OF STRONG STORMS OVER LA WILL CONTINUE TO TRACK
EASTWARD OVERNIGHT...WHILE ISOLATED SHOWERS/THUNDERSTORMS INTENSIFY
AHEAD OF LINE. FORCING AND INSTABILITY ARE WEAK.  HOWEVER...VERY
STRONG VERTICAL SHEAR PROFILES WILL PROMOTE A RISK OF SUPERCELLS AND
ISOLATED TORNADOES WITH MORE PERSISTENT CELLS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25035.


...HART

335,0884 312,0894 312,0921 335,0910

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 27, 6:19 PM CSTTornado WatchSPCArkansas, Bradley, Clay, Cleveland, Craighead, Crittenden and 21 more8 hr
Nov 28, 12:43 AM CSTMesoscale DiscussionSPCClay, Craighead, Crittenden, Greene, Lee, Mississippi and 3 more62 min
Nov 28, 2:40 AM CSTMesoscale DiscussionSPCConcordia, Madison, Tensas95 min
Nov 28, 4:42 AM CSTMesoscale DiscussionSPCAscension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 20 more93 min
Nov 27, 8:44 PM CSTMesoscale DiscussionSPCBenton, DeSoto, Lafayette, Marshall, Panola, Quitman and 1 more91 min
Nov 27, 11:26 PM CSTTornado WatchSPCAlcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more7 hr
Nov 28, 3:28 AM CSTMesoscale DiscussionSPCAlcorn, Benton, Calhoun, Chickasaw, Itawamba, Lafayette and 12 more62 min
Nov 28, 9:29 AM CSTMesoscale DiscussionSPCClarke, Forrest, George, Greene, Harrison, Jackson and 11 more2 hr

Nearby

Tornado Watches in Mississippi, 2005Tornado Watches in Louisiana, 2005Tornado Watches in Arkansas, 2005Every tornado watch in 2005

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.