Alert archive / Alabama / Tornado Watches in 2007
Tornado Watch 143
The Storm Prediction Center issued this tornado watch at Apr 14, 2007, 5:26 PM CDT for 25 counties in Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida; 6 counties in Mississippi. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 14, 2007, 5:26 PM CDT (22:26 UTC)
- Expired
- Apr 14, 2007, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 34 counties
Autauga County, AL, Baldwin County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Escambia County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Mobile County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Pike County, AL, Russell County, AL, Washington County, AL, Wilcox County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL, George County, MS, Greene County, MS, Jackson County, MS, Perry County, MS, Stone County, MS, Wayne County, MS
The radar
The Mobile radar (KMOB), 114 km from the middle of the area, began a volume at 22:30 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 5:31 PM CDT | Tornado Warning | MOB | Crenshaw | 29 min |
| Apr 14, 5:35 PM CDT | Flash Flood Warning | MOB | Conecuh, Escambia | 115 min |
| Apr 14, 5:38 PM CDT | Severe Thunderstorm Warning | MOB | Covington | 37 min |
| Apr 14, 5:42 PM CDT | Tornado Warning | BMX | Pike | 33 min |
| Apr 14, 5:58 PM CDT | Severe Thunderstorm Warning | MOB | Crenshaw | 34 min |
| Apr 14, 6:02 PM CDT | Tornado Warning | BMX | Bullock | 28 min |
| Apr 14, 6:14 PM CDT | Tornado Warning | BMX | Barbour | 46 min |
| Apr 14, 6:55 PM CDT | Tornado Warning | BMX | Russell | 35 min |
| Apr 14, 6:58 PM CDT | Tornado Warning | BMX | Barbour | 17 min |
| Apr 14, 7:20 PM CDT | Severe Thunderstorm Warning | MOB | Escambia, Santa Rosa | 55 min |
| Apr 14, 7:30 PM CDT | Tornado Warning | BMX | Russell | 15 min |
| Apr 14, 7:38 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Mobile | 52 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
Birmingham, AL (KBMX), launched 12:00Z, 10.4 hours before the alert went out and 205 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 972 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 238 m²/s²
- 0-3 km storm-relative helicity
- 289 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 142226
SEL3
SPC WW 142226
ALZ000-FLZ000-MSZ000-CWZ000-150400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 143
NWS STORM PREDICTION CENTER NORMAN OK
525 PM CDT SAT APR 14 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
A LARGE PART OF SOUTHERN ALABAMA
WESTERN FLORIDA PANHANDLE
SMALL PART OF SOUTHEAST MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 525 PM UNTIL
1100 PM CDT.
TORNADOES...HAIL TO 2 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 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH NORTHEAST OF
MONTGOMERY ALABAMA TO 60 MILES SOUTH OF MOBILE ALABAMA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).
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 141. WATCH NUMBER 141 WILL NOT BE IN EFFECT AFTER
525 PM CDT. CONTINUE...WW 142...
DISCUSSION...SEVERE THUNDERSTORMS CONTINUE TO DEVELOP SWRN AL WITH
ADDITIONAL STORMS INCREASING ALONG COLD FRONT NOW MOVING EWD ACROSS
NWRN AL INTO SERN LA. WITH MLCAPES AOA 1500 J/KG AND 50-60 KT OF
DEEP LAYER SHEAR...SUPERCELLS INCLUDING POSSIBLE TORNADOES EXPECTED
SEVERAL MORE HOURS ACROSS THE WATCH AREA. THREAT WILL END FROM THE
W WITH THE PASSAGE OF THE COLD FRONT.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.
...HALESSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 10:07 AM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 7 more | 53 min |
| Apr 14, 10:26 AM CDT | Tornado Watch | SPC | Autauga, Baldwin, Barbour, Bibb, Bullock, Butler and 32 more | 7 hr |
| Apr 14, 12:24 PM CDT | Mesoscale Discussion | SPC | Blount, Calhoun, Cherokee, Cleburne, Cullman, DeKalb and 10 more | 66 min |
| Apr 14, 2:12 PM CDT | Mesoscale Discussion | SPC | Autauga, Baldwin, Barbour, Bibb, Bullock, Butler and 32 more | 63 min |
| Apr 14, 3:35 PM CDT | Tornado Watch | SPC | Coffee, Dale, Geneva, Henry, Houston | 7 hr |
| Apr 14, 5:04 PM CDT | Mesoscale Discussion | SPC | Autauga, Baldwin, Bibb, Bullock, Butler, Chambers and 26 more | 56 min |
| Apr 14, 2:40 PM CDT | Mesoscale Discussion | SPC | Baker, Columbia, Franklin, Gadsden, Hamilton, Jefferson and 7 more | 65 min |
| Apr 14, 4:53 PM CDT | Mesoscale Discussion | SPC | Nassau | 97 min |
| Apr 13, 8:42 PM CDT | Mesoscale Discussion | SPC | Allen, Avoyelles, Beauregard, Bienville, Bossier, Caddo and 22 more | 2 hr |
| Apr 14, 1:34 AM CDT | Mesoscale Discussion | SPC | Allen, Avoyelles, Caldwell, Catahoula, Concordia, East Carroll and 14 more | 56 min |
| Apr 14, 1:41 AM CDT | Tornado Watch | SPC | Allen, Avoyelles, Beauregard, Caldwell, Catahoula, Concordia and 19 more | 6 hr |
| Apr 14, 6:17 AM CDT | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Lafayette and 13 more | 88 min |
| Apr 14, 7:11 AM CDT | Severe Thunderstorm Watch | SPC | East Baton Rouge, East Feliciana, Livingston, Pointe Coupee, Saint Helena, Saint Tammany and 4 more | 6 hr |
| Apr 13, 10:55 PM CDT | Mesoscale Discussion | SPC | Bolivar, Coahoma, Humphreys, Leflore, Quitman, Sunflower and 2 more | 95 min |
Nearby
Tornado Watches in Alabama, 2007Tornado Watches in Mississippi, 2007Tornado Watches in Florida, 2007Every tornado watch in 2007
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.