Alert archive / Alabama / Tornado Watches in 2006

Tornado Watch 854

November 15, 200626 counties in Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida

The Storm Prediction Center issued this tornado watch at Nov 15, 2006, 4:00 AM CST for 26 counties in 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
Nov 15, 2006, 4:00 AM CST (10:00 UTC)
Expired
Nov 15, 2006, 9:58 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 29 counties

Autauga County, AL, Baldwin County, AL, Bibb County, AL, Butler County, AL, Chilton 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, Greene County, AL, Hale County, AL, Lowndes County, AL, Marengo County, AL, Mobile County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Washington County, AL, Wilcox County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL

The radar

The Birmingham radar (KBMX), 127 km from the middle of the area, began a volume at 10:00 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
90%
One or more EF2 to EF5 tornadoes
50%
Ten or more severe wind reports
70%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Nov 15, 4:40 AM CSTTornado WarningMOBChoctaw50 min
Nov 15, 5:21 AM CSTTornado WarningMOBWashington54 min
Nov 15, 5:22 AM CSTTornado WarningBMXMarengo53 min
Nov 15, 5:31 AM CSTTornado WarningMOBMobile59 min
Nov 15, 5:54 AM CSTTornado WarningMOBClarke36 min
Nov 15, 6:44 AM CSTSevere Thunderstorm WarningMOBBaldwin, Clarke, Conecuh, Escambia, Monroe61 min
Nov 15, 7:12 AM CSTTornado WarningMOBMobile63 min
Nov 15, 7:46 AM CSTSevere Thunderstorm WarningMOBConecuh, Monroe29 min
Nov 15, 8:38 AM CSTTornado WarningMOBBaldwin52 min
Nov 15, 9:34 AM CSTTornado WarningBMXLowndes26 min
Nov 15, 9:53 AM CSTTornado WarningBMXMontgomery52 min
Nov 15, 9:57 AM CSTFlash Flood WarningMOBMobile3 hr

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 00:00Z, 10.0 hours before the alert went out and 127 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, Birmingham, AL at 00:00Z on 2006-11-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Birmingham, AL at 00:00Z on 2006-11-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1127 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 15, 1:30 AM CSTMesoscale DiscussionSPCMobile, Washington2 hr
Nov 15, 5:55 AM CSTMesoscale DiscussionSPCBaldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 7 more95 min
Nov 15, 9:01 AM CSTTornado WatchSPCBlount, Calhoun, Cherokee, Clay, Cleburne, Colbert and 22 more6 hr
Nov 15, 9:30 AM CSTMesoscale DiscussionSPCBaldwin, Choctaw, Clarke, Dallas, Greene, Hale and 8 more60 min
Nov 15, 9:54 AM CSTTornado WatchSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 33 more11 hr
Nov 15, 12:48 PM CSTMesoscale DiscussionSPCBarbour, Coffee, Dale, Geneva, Henry, Houston and 1 more57 min
Nov 15, 3:28 PM CSTMesoscale DiscussionSPCHouston92 min
Nov 15, 12:15 PM CSTTornado WatchSPCDixie, Franklin, Gadsden, Jefferson, Lafayette, Leon and 4 more9 hr
Nov 14, 6:46 PM CSTMesoscale DiscussionSPCBolivar, Washington119 min
Nov 14, 9:15 PM CSTMesoscale DiscussionSPCAlcorn, Attala, Benton, Bolivar, Calhoun, Carroll and 30 more2 hr
Nov 14, 10:07 PM CSTMesoscale DiscussionSPCWilkinson83 min
Nov 14, 11:25 PM CSTTornado WatchSPCAdams, Amite, Claiborne, Copiah, Covington, Forrest and 12 more6 hr
Nov 14, 11:32 PM CSTMesoscale DiscussionSPCAdams, Amite, Attala, Bolivar, Carroll, Choctaw and 41 more58 min
Nov 15, 1:59 AM CSTTornado Watch PDSSPCAdams, Amite, Attala, Bolivar, Carroll, Choctaw and 54 more8 hr
Nov 15, 2:16 AM CSTMesoscale DiscussionSPCIssaquena, Jefferson119 min
Nov 15, 2:29 AM CSTMesoscale DiscussionSPCBenton, Coahoma, DeSoto, Lafayette, Lee, Marshall and 6 more2 hr
Nov 15, 4:30 AM CSTTornado WatchSPCAlcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more5 hr
Nov 15, 7:14 AM CSTMesoscale DiscussionSPCAdams, Alcorn, Amite, Attala, Benton, Calhoun and 54 more2 hr
Nov 15, 12:46 PM CSTMesoscale DiscussionSPCAlcorn, Benton, Lafayette, Marshall, Prentiss, Tippah and 2 more119 min

Nearby

Tornado Watches in Alabama, 2006Tornado Watches in Florida, 2006Every tornado watch in 2006

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.