Alert archive / Mississippi / Tornado Warnings in 2005

Tornado Warning 93, NWS New Orleans, LA

August 29, 2005Harrison County, Mississippi

NWS New Orleans, LA issued this tornado warning at Aug 29, 2005, 9:50 AM CDT for Harrison County, Mississippi. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 29, 2005, 9:50 AM CDT (14:50 UTC)
Expired
Aug 29, 2005, 10:45 AM CDT
In force
55 min
Issued by
NWS New Orleans, LA
Area
Counties, with a storm outline in the text

County Harrison County, MS

The radar

The Mobile radar (KMOB), 86 km from the middle of the area, began a volume at 14:54 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 29, 2:00 AM CDTTornado WatchSPC8 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 2.8 hours before the alert went out and 231 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 12:00Z on 2005-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 288 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2005-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
288 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
841 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
1 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KLIX 291452
TORLIX
MSC047-291545-
/O.NEW.KLIX.TO.W.0093.050829T1450Z-050829T1545Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS-BATON ROUGE LA
ISSUED BY NATIONAL WEATHER SERVICE MOBILE AL
950 AM CDT MON AUG 29 2005

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...

  HARRISON COUNTY IN SOUTHERN MISSISSIPPI

* UNTIL 1045 AM CDT

* AT 947 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THE LEADING EDGE OF INTENSE EYEWALL WINDS ASSOCIATED WITH VERY 
DANGEROUS HURRICANE KATRINA MOVING THROUGH SOUTHEAST MISSISSIPPI. 
THE LEADING EDGE OF DESTRUCTIVE WINDS EXTENDEED FROM 18 MILES 
NORTHWEST OF LYMAN TO 9 MILES SOUTHEAST OF GULFPORT AND 
OFFSHORE...MOVING NORTH AT 18 MPH.

* THE ONSET OF DESTRUCTIVE WINDS WITH GUSTS OF 100 TO 120 MPH WILL 
BE NOTED WITH THIS LINE. THESE DESTRUCTIVE WINDS WILL PRODUCE WIND 
DAMAGE SIMILAR TO A TORNADO OVER LARGE AREAS. SEEK SHELTER ON THE 
LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS 
A CLOSET. STAY AWAY FROM WINDOWS AND REMAIN IN YOUR SAFE SHELTER 
UNTIL THE EYEWALL PASSES.

LAT...LON 3046 8932 3025 8904 3004 8888 3038 8888
      3068 8886 3067 8932

$$

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Aug 29, 5:06 AM CDT, 4 hours 44 minutes earlier.

Area forecast discussion, Aug 29, 5:06 AM CDT, 4 hours 44 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
506 AM CDT MON AUG 29 2005

.DISCUSSION...
EXTREMELY DANGEROUS CATEGORY FOUR HURRICANE KATRINA WILL BE MAKING
INITIAL LANDFALL OVER LOWER PLAQUEMINES PARISH SHORTLY. THE
PROJECTED TRACK TAKES KATRINA NORTH TOWARDS THE LOWER PEARL RIVER
VALLEY NEAR THE LA/MS BORDER LATE THIS MORNING. HURRICANE WINDS
HAVE BEEN EXPANDING THE LAST COUPLE HOURS. IN ADDITION TO VERY
STRONG WINDS...A MASSIVE STORM SURGE IS OCCURRING ALONG WITH
EXTREMEMLY HEAVY RAINFALL AND FLASH FLOODING. WILL HAVE TO CUT THE
DISCUSSION SHORT TO GET PRODUCTS OUT BEFORE LOSING COMMUNICATIONS.
REFER TO THE OUR LATEST HURRICANE LOCAL STATEMENT...FLOOD
WATCH...AND INLAND HURRICANE/ TROPICAL STORM WARNING PRODUCTS.

NO OTHER SIGNIFICANT WEATHER SYSTEMS ARE EXPECTED TO FOLLOW
KATRINA...SO HOT AND DRIER WEATHER IS EXPECTED TUESDAY THROUGH
SUNDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  77  74  90  73 / 100  70  30  20
BTR  81  74  94  73 / 100  30  30  20
MSY  82  78  91  78 / 100  30  30  20
GPT  82  78  89  75 / 100  60  30  20

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...TORNADO WATCH UNTIL NOON MONDAY FOR LAZ038-LAZ039-LAZ040-LAZ058-
     LAZ059-LAZ060-LAZ061-LAZ062-LAZ063-LAZ064-LAZ067-LAZ068-
     LAZ069-LAZ070.

     HURRICANE WARNING UNTIL 9 PM MONDAY FOR LAZ038-LAZ040-LAZ050-
     LAZ056-LAZ057-LAZ058-LAZ059-LAZ060-LAZ061-LAZ062-LAZ063-
     LAZ064-LAZ065-LAZ066-LAZ067-LAZ068-LAZ069-LAZ070.

GM...HURRICANE WARNING UNTIL 9 PM MONDAY FOR GMZ530-GMZ550-GMZ555-
     GMZ570-GMZ575.

     TORNADO WATCH UNTIL NOON MONDAY FOR GMZ530-GMZ550-GMZ555-GMZ575.

MS...TORNADO WATCH UNTIL NOON MONDAY FOR MSZ070-MSZ071-MSZ077-MSZ080-
     MSZ081-MSZ082.

     HURRICANE WARNING UNTIL 9 PM MONDAY FOR MSZ080-MSZ081-MSZ082.

GM...HURRICANE WARNING UNTIL 9 PM MONDAY FOR GMZ530-GMZ550-GMZ555-
     GMZ570-GMZ575.

     TORNADO WATCH UNTIL NOON MONDAY FOR GMZ530-GMZ550-GMZ555-GMZ575.

&&

22
Hazardous weather outlook, Aug 29, 8:30 AM CDT, 1 hour 20 minutes before
HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE NEW ORLEANS LA
830 AM CDT MON AUG 29 2005

LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-291600-
AMITE-ASCENSION-ASSUMPTION-EAST BATON ROUGE-EAST FELICIANA-HANCOCK-
HARRISON-IBERVILLE-JACKSON-LIVINGSTON-LOWER JEFFERSON-
LOWER LAFOURCHE-LOWER PLAQUEMINES-LOWER ST. BERNARD-LOWER TERREBONNE-
ORLEANS-PEARL RIVER-PIKE-POINTE COUPEE-ST. CHARLES-ST. HELENA-
ST. JAMES-ST. JOHN THE BAPTIST-ST. TAMMANY-TANGIPAHOA-
UPPER JEFFERSON-UPPER LAFOURCHE-UPPER PLAQUEMINES-UPPER ST. BERNARD-
UPPER TERREBONNE-WALTHALL-WASHINGTON-WEST BATON ROUGE-WEST FELICIANA-
WILKINSON-
830 AM CDT MON AUG 29 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL AND SOUTHEAST
LOUISIANA AND EXTREME SOUTHWEST...SOUTH CENTRAL AND COASTAL
MISSISSIPPI.

...A HURRICANE WARNING IS IN EFFECT...
...AN INLAND HURRICANE/TROPICAL STORM WIND WARNING IS IN EFFECT...
...A FLASH FLOOD WATCH IS IN EFFECT...

.DAY ONE...TODAY AND TONIGHT

MAJOR HURRICANE KATRINA IS IMPACTING SOUTHEAST LOUISIANA AND SOUTH
MISSISSIPPI THIS MORNING. FOR IMMEDIATE INFORMATION...REFER TO THE
LATEST ADVISORIES...HURRICANE LOCAL ACTION STATEMENTS AND WARNINGS
REGARDING EXTREMELY DANGEROUS HURRICANE KATRINA.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

SEASONAL WEATHER WILL RETURN TO THE OUTLOOK AREA BEGINNING TUESDAY
WITH A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EACH DAY.

.SPOTTER INFORMATION STATEMENT...

THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY
MANAGEMENT PERSONNEL...IN SUPPORT OF SEVERE AND TROPICAL WEATHER
OPERATIONS...IS STRONGLY REQUESTED AT THIS TIME UNTIL HURRICANE
KATRINA MOVES NORTH OF THE OUTLOOK AREA.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 3:09 AM CDTTornado WarningLIXHancock36 min
Aug 29, 3:59 AM CDTTornado WarningLIXHancock, Harrison46 min
Aug 29, 7:23 AM CDTTornado WarningLIXHancock, Harrison2 hr
Aug 29, 7:54 AM CDTFlash Flood WarningLIXHancock, Harrison, Jackson, Pearl River, Pike, Walthall6 hr
Aug 29, 8:42 AM CDTTornado WarningLIXPearl River63 min
Aug 29, 9:43 AM CDTTornado WarningLIXHancock, Pearl River62 min
Aug 29, 10:49 AM CDTTornado WarningLIXHancock, Harrison, Pearl River, Walthall56 min
Aug 29, 11:55 AM CDTTornado WarningLIXPearl River, Walthall65 min
Aug 29, 12:10 PM CDTFlash Flood WarningLIXHancock, Harrison, Jackson, Pearl River4 hr
Aug 29, 12:58 PM CDTFlash Flood WarningLIXPike, Walthall4 hr
Aug 29, 4:20 PM CDTFlash Flood WarningLIXHancock, Harrison, Jackson, Pearl River4 hr

Nearby

Tornado Warnings in Mississippi, 2005Every tornado warning in 2005Tornadoes 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.