Alert archive / Florida / Tornado Watches in 2003

Tornado Watch 607

June 30, 2003Baldwin County, Escambia County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida

The Storm Prediction Center issued this tornado watch at Jun 30, 2003, 10:30 AM CDT for Baldwin County, Escambia County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jun 30, 2003, 10:30 AM CDT (15:30 UTC)
Expired: Jun 30, 2003, 4:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

Counties Baldwin County, AL, Escambia County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 102 km from the middle of the area, began a volume at 15:29 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.

Discussions around it

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

The nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 3.5 hours before the alert went out and 67 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: 908 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 301531
SEL7  
SPC WW 301530
ALZ000-FLZ000-CWZ000-302100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 607 
NWS STORM PREDICTION CENTER NORMAN OK 
1030 AM CDT MON JUN 30 2003

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

       SOUTH CENTRAL ALABAMA
       WESTERN FLORIDA PANHANDLE
       COASTAL WATERS

EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 1030 AM UNTIL 400
PM CDT.

TORNADOES...THUNDERSTORM WIND GUSTS TO 55 MPH...AND DANGEROUS
LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 45 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 35 MILES WEST OF PENSACOLA FLORIDA TO 20
MILES SOUTHEAST 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...CONTINUE...WW 606...


DISCUSSION...THREAT FOR OUTER RAIN BAND SUPERCELLS/BRIEF TORNADOES
IS EXPECTED TO INCREASE SOME THROUGH THE AFTERNOON ACROSS SRN AL/WRN
FL PANHANDLE AS TROPICAL STORM BILL MOVES NWD TOWARD THE LA COAST. 
VAD WIND PROFILES FROM MOBILE SHOW INCREASING LOW-LEVEL SHEAR THE
PAST FEW HOURS...WITH 0-1 KM SRH VALUES NOW APPROACHING 150 M2/S2. 
DEEPER LAYER SHEAR AND INSTABILITY ALSO APPEAR TO BE SUFFICIENT FOR
SUPERCELLS IN THE OUTER RAIN BANDS...WITH THE MOIST ENVIRONMENT AND
LOW-LEVEL SHEAR FAVORABLE FOR A COUPLE OF TORNADOES AS CONVECTION
MOVES INLAND THROUGH THE AFTERNOON.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME
TURBULENCE AND SURFACE WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI
WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 18025.


...THOMPSON

310,0874 311,0861 295,0861 294,0874

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 6:55 AM CDT	Tornado Watch	SPC	Baldwin, Clarke, Mobile, Washington	9 hr
Jun 30, 9:57 AM CDT	Mesoscale Discussion	SPC	Conecuh, Covington, Escambia, Monroe	93 min
Jun 30, 11:23 AM CDT	Mesoscale Discussion	SPC	Mobile, Washington	2 hr
Jun 30, 1:46 PM CDT	Mesoscale Discussion	SPC	Baldwin, Escambia	119 min
Jun 30, 3:13 PM CDT	Mesoscale Discussion	SPC	Baldwin, Escambia, Mobile, Washington	92 min
Jun 30, 3:35 PM CDT	Tornado Watch	SPC	Baldwin, Escambia, Mobile	6 hr

Nearby

Tornado Watches in Florida, 2003 Tornado Watches in Alabama, 2003 Every 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.