Alert archive / Alabama / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 81, NWS Mobile, AL

February 7, 2017Baldwin County, Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Feb 7, 2017, 2:02 PM CST for Baldwin County, Mobile County, Alabama. It was in force for 58 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Feb 7, 2017, 2:02 PM CST (20:02 UTC)
Expired
Feb 7, 2017, 3:00 PM CST
In force
58 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Possible
Hail
1.25 in
Wind
70.0 mph

Counties Baldwin County, AL, Mobile County, AL

The radar

The Mobile radar (KMOB), 35 km from the middle of the area, began a volume at 20:03 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 was reported inside it

TimeReportWhereRemark
Feb 7, 2:50 PM CSTHAIL 1Elberta, ALQUARTER SIZE HAIL REPORTED IN ELBERTA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 7, 11:50 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.0 hours before the alert went out and 141 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 2017-02-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 889 joules per kilogram.LCLLFCEL10008507005003002001001 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 2017-02-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 194 square meters per square second.19395878Sfc1 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
889 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
562 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
194 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

As transmitted.

116 
WUUS54 KMOB 072002
SVRMOB
ALC003-097-072100-
/O.NEW.KMOB.SV.W.0081.170207T2002Z-170207T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
202 PM CST TUE FEB 7 2017

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southwestern Mobile County in southwestern Alabama...
  Southwestern Baldwin County in southwestern Alabama...

* Until 300 PM CST

* At 200 PM CST, two clusters of severe thunderstorms will affect 
  Coastal Alabama. One cluster of severe thunderstorms was located 
  near Moss Point. Another line of severe thunderstorms extended 
  from the Dog River Bridge, south to the Dauphin Island Causeway. 
  Movement was east at 55 mph.

  HAZARD...70 mph wind gusts and half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings. 

* Locations impacted include...
  Daphne, Tillmans Corner, Fairhope, Gulf Shores, Foley, Theodore,
  Orange Beach, Grand Bay, Robertsdale, Bayou La Batre, Point Clear,
  Central Dauphin Island, Magnolia Springs, Bon Secour, Summerdale,
  Silverhill, Elberta, Coden, Fort Gaines and Fort Morgan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 600 PM CST for southwestern
Alabama...and northwestern Florida.

LAT...LON 3022 8838 3033 8840 3035 8839 3037 8840
      3038 8841 3039 8841 3038 8840 3058 8840
      3062 8754 3022 8753
TIME...MOT...LOC 2000Z 267DEG 46KT 3038 8853 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

Butts
1 follow-up statement
676 
WWUS54 KMOB 072046
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
246 PM CST TUE FEB 7 2017

ALC003-097-072100-
/O.CON.KMOB.SV.W.0081.000000T0000Z-170207T2100Z/
Mobile AL-Baldwin AL-
246 PM CST TUE FEB 7 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CST
FOR SOUTHWESTERN MOBILE AND SOUTHWESTERN BALDWIN COUNTIES...

At 245 PM CST, severe thunderstorms were located along a line
extending from near Elberta to near Orange Beach to near Bon Secour
to 12 miles west of Central Dauphin Island, moving east at 50 mph.

HAZARD...70 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

Locations impacted include...
Gulf Shores, Foley, Orange Beach, Robertsdale, Point Clear, Central
Dauphin Island, Magnolia Springs, Bon Secour, Summerdale, Elberta,
Coden, Fort Gaines, Fort Morgan and Alabama Port.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

Additional statements will be issued as conditions warrant.

&&

A tornado watch remains in effect until 600 PM CST for southwestern
Alabama...and northwestern Florida.

LAT...LON 3022 8838 3033 8840 3037 8838 3038 8841
      3039 8841 3039 8840 3038 8817 3062 8754
      3022 8753
TIME...MOT...LOC 2045Z 277DEG 42KT 3043 8756 3035 8760 3026 8779 3020
8830

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

Butts

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 7, 5:58 AM CSTRip Current StatementMOBBaldwin, Mobile42 hr
Feb 7, 10:16 AM CSTSevere Thunderstorm WarningMOBChoctaw, Washington59 min
Feb 7, 10:29 AM CSTSpecial Weather StatementMOBClarke46 min
Feb 7, 10:47 AM CSTSpecial Weather StatementMOBMobile28 min
Feb 7, 10:57 AM CSTSpecial Marine WarningMOB33 min
Feb 7, 11:17 AM CSTSpecial Weather StatementMOBClarke, Washington43 min
Feb 7, 11:33 AM CSTSevere Thunderstorm WarningMOBClarke, Monroe, Washington, Wilcox42 min
Feb 7, 12:06 PM CSTSpecial Weather StatementMOBEscambia39 min
Feb 7, 12:12 PM CSTSpecial Weather StatementMOBConecuh, Monroe33 min
Feb 7, 12:34 PM CSTSpecial Marine WarningMOB41 min
Feb 7, 12:42 PM CSTSpecial Marine WarningMOB63 min
Feb 7, 12:49 PM CSTSpecial Weather StatementMOBButler, Crenshaw41 min
Feb 7, 1:00 PM CSTSpecial Weather StatementMOBBaldwin, Mobile30 min
Feb 7, 1:06 PM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile39 min
Feb 7, 1:11 PM CSTSevere Thunderstorm WarningMOBMobile49 min
Feb 7, 1:21 PM CSTAreal Flood AdvisoryMOBMobile3 hr
Feb 7, 1:27 PM CSTSpecial Weather StatementMOBBaldwin48 min
Feb 7, 1:44 PM CSTSpecial Marine WarningMOB46 min
Feb 7, 1:46 PM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile44 min
Feb 7, 1:49 PM CSTSpecial Marine WarningMOB56 min
Feb 7, 1:52 PM CSTSpecial Weather StatementMOBConecuh38 min
Feb 7, 2:20 PM CSTSpecial Weather StatementMOBButler, Conecuh, Crenshaw40 min
Feb 7, 2:26 PM CSTSpecial Weather StatementMOBCovington, Escambia49 min
Feb 7, 2:30 PM CSTSpecial Marine WarningMOB45 min
Feb 7, 2:32 PM CSTSpecial Marine WarningMOB58 min
Feb 7, 2:33 PM CSTSpecial Marine WarningMOB42 min
Feb 7, 2:45 PM CSTSpecial Marine WarningMOB60 min
Feb 7, 2:49 PM CSTSmall Craft AdvisoryMOB9 hr
Feb 7, 2:57 PM CSTAreal Flood AdvisoryMOBBaldwin, Mobile3 hr
Feb 7, 2:58 PM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile62 min
Feb 7, 3:01 PM CSTSevere Thunderstorm WarningMOBBaldwin59 min
Feb 7, 3:10 PM CSTSpecial Weather StatementMOBCovington35 min
Feb 7, 3:14 PM CSTSpecial Marine WarningMOB61 min
Feb 7, 3:27 PM CSTSpecial Marine WarningMOB63 min
Feb 7, 3:40 PM CSTSpecial Marine WarningMOB65 min
Feb 7, 3:59 PM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile46 min
Feb 7, 4:04 PM CSTSevere Thunderstorm WarningMOBBaldwin41 min
Feb 7, 4:14 PM CSTSpecial Marine WarningMOB61 min
Feb 7, 4:25 PM CSTSpecial Marine WarningMOB65 min
Feb 7, 4:44 PM CSTSevere Thunderstorm WarningMOBBaldwin35 min
Feb 7, 4:48 PM CSTSpecial Marine WarningMOB27 min
Feb 7, 4:49 PM CSTSpecial Weather StatementMOBWilcox41 min
Feb 7, 5:02 PM CSTSpecial Weather StatementMOBConecuh43 min
Feb 7, 5:12 PM CSTSpecial Marine WarningMOB63 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2017Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.