Alert archive / Alabama / Tornado Watches in 2016

Tornado Watch 15

February 15, 201633 counties in Alabama; 10 counties in Florida

The Storm Prediction Center issued this tornado watch at Feb 15, 2016, 12:02 PM CST for 33 counties in Alabama; 10 counties in Florida. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Feb 15, 2016, 12:02 PM CST (18:02 UTC)
Expired
Feb 15, 2016, 8:54 PM CST
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 43 counties

Autauga County, AL, Baldwin County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Dallas County, AL, Elmore County, AL, Escambia County, AL, Geneva County, AL, Greene County, AL, Hale County, AL, Henry County, AL, Houston 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, Sumter County, AL, Washington County, AL, Wilcox County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL

The radar

The Mobile radar (KMOB), 132 km from the middle of the area, began a volume at 18:05 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
50%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
5%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Feb 15, 12:06 PM CSTTornado WarningMOBClarke, Washington39 min
Feb 15, 12:10 PM CSTTornado Warning Tornado observedMOBButler, Conecuh, Monroe23 min
Feb 15, 12:24 PM CSTSevere Thunderstorm WarningMOBBaldwin, Clarke, Monroe36 min
Feb 15, 12:32 PM CSTTornado WarningMOBClarke, Wilcox43 min
Feb 15, 12:36 PM CSTTornado WarningMOBClarke, Washington39 min
Feb 15, 12:41 PM CSTSevere Thunderstorm WarningMOBMobile34 min
Feb 15, 12:44 PM CSTSevere Thunderstorm WarningMOBButler, Conecuh46 min
Feb 15, 12:47 PM CSTSevere Thunderstorm WarningMOBMobile, Washington28 min
Feb 15, 1:00 PM CSTSevere Thunderstorm WarningMOBMonroe30 min
Feb 15, 1:02 PM CSTSevere Thunderstorm WarningMOBConecuh, Escambia28 min
Feb 15, 1:10 PM CSTTornado WarningMOBWilcox35 min
Feb 15, 1:13 PM CSTTornado WarningMOBClarke, Washington47 min
Feb 15, 1:16 PM CSTSevere Thunderstorm WarningMOBWashington44 min
Feb 15, 1:18 PM CSTSevere Thunderstorm WarningMOBConecuh, Escambia27 min
Feb 15, 1:26 PM CSTSevere Thunderstorm WarningMOBMonroe, Wilcox49 min
Feb 15, 1:33 PM CSTSevere Thunderstorm WarningMOBButler, Conecuh42 min
Feb 15, 1:46 PM CSTTornado WarningMOBClarke, Washington44 min
Feb 15, 2:06 PM CSTSevere Thunderstorm WarningMOBBaldwin, Clarke, Monroe39 min
Feb 15, 2:07 PM CSTSevere Thunderstorm WarningMOBButler, Conecuh38 min
Feb 15, 2:26 PM CSTSevere Thunderstorm WarningMOBClarke, Monroe, Wilcox49 min
Feb 15, 2:35 PM CSTSevere Thunderstorm WarningMOBButler, Crenshaw40 min
Feb 15, 2:52 PM CSTSevere Thunderstorm WarningMOBBaldwin38 min
Feb 15, 3:06 PM CSTSevere Thunderstorm WarningMOBButler, Crenshaw24 min
Feb 15, 3:16 PM CSTSevere Thunderstorm WarningMOBConecuh, Monroe29 min
Feb 15, 3:19 PM CSTSevere Thunderstorm WarningMOBChoctaw, Clarke, Mobile, Monroe, Washington, Wilcox41 min
Feb 15, 3:21 PM CSTTornado WarningMOBEscambia39 min
Feb 15, 3:23 PM CSTSevere Thunderstorm WarningMOBConecuh, Escambia52 min
Feb 15, 3:48 PM CSTSevere Thunderstorm WarningBMXGreene, Hale, Marengo, Sumter57 min
Feb 15, 3:56 PM CSTTornado Warning Tornado observedConsiderable damage threatMOBConecuh, Escambia49 min
Feb 15, 3:59 PM CSTSevere Thunderstorm WarningMOBBaldwin, Clarke, Escambia, Mobile, Monroe, Washington31 min
Feb 15, 4:04 PM CSTSevere Thunderstorm WarningMOBConecuh, Escambia26 min
Feb 15, 4:05 PM CSTTornado WarningBMXElmore, Macon, Montgomery25 min
Feb 15, 4:10 PM CSTSevere Thunderstorm WarningMOBButler, Crenshaw50 min
Feb 15, 4:27 PM CSTSevere Thunderstorm WarningBMXBibb, Dallas, Perry43 min
Feb 15, 4:28 PM CSTSevere Thunderstorm WarningMOBBaldwin, Butler, Clarke, Conecuh, Escambia, Mobile and 3 more32 min
Feb 15, 4:31 PM CSTTornado WarningMOBButler, Conecuh, Covington, Crenshaw, Escambia44 min
Feb 15, 4:54 PM CSTSevere Thunderstorm WarningMOBButler, Crenshaw36 min
Feb 15, 4:57 PM CSTSevere Thunderstorm WarningBMXMontgomery48 min
Feb 15, 5:09 PM CSTSevere Thunderstorm WarningMOBEscambia12 min
Feb 15, 5:10 PM CSTTornado Warning Tornado observedMOBButler, Covington, Crenshaw50 min
Feb 15, 5:37 PM CSTSevere Thunderstorm WarningMOBCovington, Crenshaw23 min
Feb 15, 5:46 PM CSTSevere Thunderstorm WarningTAECoffee44 min
Feb 15, 5:50 PM CSTSevere Thunderstorm WarningBMXBullock, Macon, Montgomery, Pike55 min
Feb 15, 5:59 PM CSTSevere Thunderstorm WarningMOBCovington, Escambia31 min
Feb 15, 6:02 PM CSTSevere Thunderstorm WarningMOBCovington28 min
Feb 15, 6:19 PM CSTSevere Thunderstorm WarningTAECoffee, Geneva41 min
Feb 15, 6:21 PM CSTSevere Thunderstorm WarningBMXBarbour54 min
Feb 15, 6:22 PM CSTSevere Thunderstorm WarningTAECoffee, Dale38 min
Feb 15, 6:44 PM CSTSevere Thunderstorm WarningBMXBullock, Macon, Russell46 min
Feb 15, 6:45 PM CSTSevere Thunderstorm WarningTAECoffee, Dale, Geneva, Henry, Houston60 min
Feb 15, 6:58 PM CSTTornado WarningBMXLee, Russell32 min
Feb 15, 7:14 PM CSTSevere Thunderstorm WarningBMXBarbour16 min
Feb 15, 7:28 PM CSTSevere Thunderstorm WarningTAEBay, Calhoun, Gulf, Jackson, Washington62 min
Feb 15, 7:36 PM CSTSevere Thunderstorm WarningTAEHenry, Houston54 min
Feb 15, 8:18 PM CSTSevere Thunderstorm WarningTAEGadsden, Jackson42 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, 6.0 hours before the alert went out and 193 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 12:00Z on 2016-02-15Temperature 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 12:00Z on 2016-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 485 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
1152 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
485 m²/s²
0-3 km storm-relative helicity
523 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

590 
WWUS20 KWNS 151800
SEL5  
SPC WW 151800
ALZ000-FLZ000-CWZ000-160300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 15
NWS STORM PREDICTION CENTER NORMAN OK
1200 PM CST MON FEB 15 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHERN AND SOUTH CENTRAL ALABAMA
  WESTERN FLORIDA PANHANDLE
  COASTAL WATERS

* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM NOON UNTIL 900
  PM CST.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

SUMMARY...THUNDERSTORMS...INCLUDING A FEW SUPERCELLS CAPABLE OF
TORNADOES...DAMAGING WIND...AND HAIL...EXPECTED OVER MUCH OF WATCH
AREA THROUGH EARLY TONIGHT.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 60 MILES NORTH NORTHWEST OF
MOBILE ALABAMA TO 10 MILES SOUTHEAST OF MARIANNA FLORIDA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 14...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 25040.


...CORFIDI

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 15, 11:50 AM CSTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bullock, Butler, Choctaw and 22 more115 min
Feb 15, 1:51 PM CSTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 28 more114 min
Feb 15, 4:24 PM CSTMesoscale DiscussionSPCBaldwin, Butler, Clarke, Coffee, Conecuh, Covington and 11 more2 hr
Feb 15, 5:27 AM CSTMesoscale DiscussionSPCAmite, Copiah, Covington, Forrest, Jasper, Jefferson Davis and 14 more3 hr
Feb 15, 7:41 AM CSTMesoscale DiscussionSPCAdams, Amite, Claiborne, Copiah, Covington, Forrest and 10 more3 hr
Feb 15, 9:30 AM CSTTornado WatchSPCAdams, Amite, Attala, Choctaw, Claiborne, Clarke and 39 more8 hr

Nearby

Tornado Watches in Alabama, 2016Tornado Watches in Florida, 2016Every tornado watch in 2016

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.