Alert archive / Alabama / Tornado Watches in 2003

Tornado Watch 610

June 30, 200311 counties in Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida; 11 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Jun 30, 2003, 9:40 PM CDT for 11 counties in Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida; 11 counties in Mississippi. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 30, 2003, 9:40 PM CDT (02:40 UTC)
Expired
Jul 1, 2003, 3:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 25 counties

Baldwin County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Mobile County, AL, Monroe County, AL, Washington County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL, Clarke County, MS, Forrest County, MS, George County, MS, Greene County, MS, Harrison County, MS, Jackson County, MS, Jasper County, MS, Jones County, MS, Perry County, MS, Stone County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 63 km from the middle of the area, began a volume at 02:42 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

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

IssuedProductOfficeCountiesLasted
Jun 30, 10:00 PM CDTTornado WarningMOBSanta Rosa30 min
Jun 30, 10:13 PM CDTTornado WarningMOBGeorge, Greene47 min
Jun 30, 10:29 PM CDTFlash Flood WarningJANForrest, Lamar, Marion4 hr
Jun 30, 10:39 PM CDTTornado WarningMOBMobile36 min
Jun 30, 10:53 PM CDTFlash Flood WarningJANClarke, Jasper, Jones6 hr
Jun 30, 11:14 PM CDTTornado WarningMOBMobile46 min
Jul 1, 12:00 AM CDTFlash Flood WarningMOBBaldwin, Escambia, Mobile3 hr
Jul 1, 12:22 AM CDTFlash Flood WarningMOBGreene, Wayne4 hr
Jul 1, 2:33 AM CDTSevere Thunderstorm WarningMOBBaldwin27 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 2.7 hours before the alert went out and 185 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 00:00Z on 2003-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 428 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 00:00Z on 2003-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 square meters per square second.19395878Sfc1 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
428 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
575 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
150 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 
WWUS20 KWNS 010242
SEL0  
SPC WW 010240
ALZ000-FLZ000-MSZ000-CWZ000-010800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 610 CORR 1
NWS STORM PREDICTION CENTER NORMAN OK 
940 PM CDT MON JUN 30 2003

CORRECTED FOR WATCH REPLACEMENT AND SOUTHWEST AL

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

  SOUTHWEST ALABAMA   
  WESTERN FLORIDA PANHANDLE   
  SOUTHEAST MISSISSIPPI       
  COASTAL WATERS       

EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 935 PM UNTIL
300 AM CDT.

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

THE TORNADO WATCH AREA IS ALONG AND 65 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 35 MILES SOUTH SOUTHWEST OF LAUREL
MISSISSIPPI TO 15 MILES EAST NORTHEAST OF CRESTVIEW FLORIDA.

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 608. WATCH NUMBER 608 WILL NOT BE IN EFFECT AFTER 940
PM CDT. CONTINUE...WW 609...WW 610...


DISCUSSION...TS BILL CONTINUES TO TRACK NORTHEASTWARD OVER EASTERN
LA...WITH SURFACE BOUNDARY EXTENDING EASTWARD FROM SYSTEM INTO 
SOUTHERN MS/AL AND THE WESTERN FL PANHANDLE.  STRONG VERTICAL SHEAR
PROFILES WILL PROMOTE THE POTENTIAL FOR ISOLATED TORNADOES THROUGH
THE NIGHT AS FEEDER BANDS ROTATE INLAND OVER WATCH AREA.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME
TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI
WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 20035.


...HART

320,0892 314,0861 295,0861 301,0892

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 30, 7:22 PM CDTMesoscale DiscussionSPCCoffee, Covington, Dale, Geneva, Henry, Houston and 1 more113 min
Jul 1, 1:25 AM CDTTornado WatchSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 41 more9 hr
Jul 1, 4:26 AM CDTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 41 more2 hr
Jul 1, 7:28 AM CDTMesoscale DiscussionSPCBarbour, Bullock, Calhoun, Chambers, Clay, Cleburne and 15 more62 min
Jul 1, 9:40 AM CDTTornado WatchSPCBarbour, Bullock, Calhoun, Chambers, Clay, Cleburne and 16 more6 hr
Jul 1, 12:57 PM CDTMesoscale DiscussionSPCBarbour, Bullock, Chambers, Henry, Lee, Macon and 3 more2 hr
Jul 1, 2:49 PM CDTMesoscale DiscussionSPCBarbour, Chambers, Cleburne, Henry, Houston, Lee and 2 more116 min
Jul 1, 3:05 PM CDTTornado WatchSPCBay, Calhoun, Columbia, Gadsden, Hamilton, Jackson and 6 more6 hr

Nearby

Tornado Watches in Alabama, 2003Tornado Watches in Mississippi, 2003Tornado Watches in Florida, 2003Every tornado watch in 2003

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.