Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 74, NWS Mobile, AL

December 10, 2012Escambia County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this tornado warning at Dec 10, 2012, 10:37 AM CST for Escambia County, Florida; Baldwin County, Alabama. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Dec 10, 2012, 10:37 AM CST (16:37 UTC)
Expired
Dec 10, 2012, 11:15 AM CST
In force
38 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Baldwin County, AL, Escambia County, FL

The radar

The Mobile radar (KMOB), 81 km from the middle of the area, began a volume at 16:39 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.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 4.6 hours before the alert went out and 228 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 12:00Z on 2012-12-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 767 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2012-12-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 237 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
767 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
488 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
237 m²/s²
0-3 km storm-relative helicity
263 m²/s²
Significant tornado parameter
1.3
Supercell composite
7.9

Open this sounding in Storm Lab

The text

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

722 
WFUS54 KMOB 101637
TORMOB
ALC003-FLC033-101715-
/O.NEW.KMOB.TO.W.0074.121210T1637Z-121210T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1037 AM CST MON DEC 10 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
  EAST CENTRAL BALDWIN COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 1115 AM CST

* AT 1034 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 12 MILES NORTHEAST OF LOXLEY...OR 13 MILES EAST
  OF STAPLETON...MOVING NORTHEAST AT 20 MPH. THE STORM ROTATION
  CONTINUES TO GRADUALLY DEEPEN AND INTENSIFY.

* LOCATIONS IMPACTED INCLUDE...
  MOLINO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
STRONG ROTATION HAS BEEN DETECTED AND A TORNADO MAY ALREADY BE ON THE
GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CST MONDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3069 8761 3074 8759 3086 8730 3085 8731
      3084 8730 3080 8729 3080 8731 3073 8731
      3072 8728 3067 8727 3064 8753
TIME...MOT...LOC 1636Z 245DEG 19KT 3070 8757

$$
1 follow-up statement
264 
WWUS54 KMOB 101650
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1050 AM CST MON DEC 10 2012

ALC003-101659-
/O.CAN.KMOB.TO.W.0074.000000T0000Z-121210T1715Z/
BALDWIN AL-
1050 AM CST MON DEC 10 2012

...THE TORNADO WARNING HAS BEEN CANCELLED FOR EAST CENTRAL BALDWIN
COUNTY...

AT 1048 AM CST...THE STORM THAT PROMPTED THE WARNING FOR EAST CENTRAL
BALDWIN COUNTY HAS MOVED TO THE EAST OUT OF THE COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CST MONDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3074 8751 3077 8752 3086 8730 3085 8731
      3081 8729 3080 8731 3073 8731 3072 8730
      3072 8728 3070 8745
TIME...MOT...LOC 1649Z 248DEG 36KT 3076 8746

$$

FLC033-101715-
/O.CON.KMOB.TO.W.0074.000000T0000Z-121210T1715Z/
ESCAMBIA FL-
1050 AM CST MON DEC 10 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 AM CST FOR CENTRAL
ESCAMBIA COUNTY...

AT 1048 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 9 MILES WEST OF MOLINO...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  MOLINO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
STRONG ROTATION HAS BEEN DETECTED AND A TORNADO MAY ALREADY BE ON THE
GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CST MONDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3074 8751 3077 8752 3086 8730 3085 8731
      3081 8729 3080 8731 3073 8731 3072 8730
      3072 8728 3070 8745
TIME...MOT...LOC 1649Z 248DEG 36KT 3076 8746

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 10, 11:07 AM CSTTornado WarningMOBEscambia, Santa Rosa38 min
Dec 10, 3:51 AM CSTSmall Craft AdvisoryMOB29 hr
Dec 10, 9:43 AM CSTSpecial Marine WarningMOB2 hr
Dec 10, 9:53 AM CSTSevere Thunderstorm WarningMOBChoctaw52 min
Dec 10, 10:03 AM CSTTornado WarningMOBBaldwin42 min
Dec 10, 10:31 AM CSTSevere Thunderstorm WarningMOBWashington49 min
Dec 10, 10:36 AM CSTTornado WarningMOBChoctaw, Washington40 min
Dec 10, 10:58 AM CSTTornado WarningMOBClarke41 min
Dec 10, 11:32 AM CSTSevere Thunderstorm WarningMOBMobile, Washington42 min
Dec 10, 11:36 AM CSTSevere Thunderstorm WarningMOBClarke, Monroe, Wilcox54 min
Dec 10, 12:09 PM CSTSevere Thunderstorm WarningMOBBaldwin, Clarke, Monroe47 min
Dec 10, 12:18 PM CSTSevere Thunderstorm WarningMOBButler, Monroe, Wilcox42 min
Dec 10, 12:30 PM CSTSevere Thunderstorm WarningMOBClarke, Conecuh, Monroe28 min
Dec 10, 12:32 PM CSTSevere Thunderstorm WarningMOBButler, Wilcox29 min
Dec 10, 12:37 PM CSTSpecial Marine WarningMOB92 min

Nearby

Tornado Warnings in Florida, 2012Tornado Warnings in Alabama, 2012Every tornado warning in 2012Tornadoes in 2012

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.