Alert archive / Florida / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 121, NWS Mobile, AL

April 3, 2017Escambia County, Santa Rosa County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 3, 2017, 10:46 AM CDT for Escambia County, Santa Rosa County, Florida; Baldwin County, Alabama. It was in force for 45 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
Apr 3, 2017, 10:46 AM CDT (15:46 UTC)
Expired
Apr 3, 2017, 11:31 AM CDT
In force
45 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Baldwin County, AL, Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 99 km from the middle of the area, began a volume at 15:45 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 watch it was issued in

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

IssuedProductOfficeLasted
Apr 3, 7:06 AM CDTTornado WatchSPC6 hr
Apr 3, 1:48 AM CDTTornado WatchSPC10 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.8 hours before the alert went out and 236 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 2017-04-03Temperature 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°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 2017-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -464 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
555 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
-464 m²/s²
0-3 km storm-relative helicity
-530 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

584 
WUUS54 KMOB 031546
SVRMOB
ALC003-FLC033-113-031645-
/O.NEW.KMOB.SV.W.0121.170403T1546Z-170403T1645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
1046 AM CDT MON APR 3 2017

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southeastern Baldwin County in southwestern Alabama...
  Southern Santa Rosa County in northwestern Florida...
  Southeastern Escambia County in northwestern Florida...

* Until 1145 AM CDT

* At 1046 AM CDT, severe thunderstorms were located along a line
  extending from near Lillian to 13 miles south of Warrington, moving
  east at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Pensacola, Ferry Pass, Brent, West Pensacola, Ensley, Warrington,
  Gonzalez, Pace, Milton, Gulf Breeze, Goulding, Bagdad, Lillian,
  Myrtle Grove, Oriole Beach, Navarre, Perdido Beach, Pensacola
  Beach, Navarre Beach and Pea Ridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 1100 AM CDT for southwestern
Alabama. A tornado watch also remains in effect until 100 PM CDT for
northwestern Florida.

LAT...LON 3026 8753 3058 8753 3070 8682 3035 8682
TIME...MOT...LOC 1546Z 280DEG 26KT 3047 8739 3019 8735 

HAIL...1.00IN
WIND...60MPH
 
$$
2 follow-up statements
435 
WWUS54 KMOB 031610
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1110 AM CDT MON APR 3 2017

ALC003-031619-
/O.CAN.KMOB.SV.W.0121.000000T0000Z-170403T1645Z/
Baldwin AL-
1110 AM CDT MON APR 3 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BALDWIN COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 100 PM CDT for northwestern
Florida.

LAT...LON 3029 8738 3041 8737 3062 8715 3070 8682
      3035 8682
TIME...MOT...LOC 1609Z 278DEG 36KT 3049 8710 3010 8714 

$$

FLC033-113-031645-
/O.CON.KMOB.SV.W.0121.000000T0000Z-170403T1645Z/
Santa Rosa FL-Escambia FL-
1110 AM CDT MON APR 3 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT
FOR SOUTHERN SANTA ROSA AND SOUTHEASTERN ESCAMBIA COUNTIES...

At 1109 AM CDT, severe thunderstorms were located along a line
extending from 6 miles east of Ferry Pass to 16 miles south of
Pensacola Beach, moving east at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Pensacola, Ferry Pass, Brent, West Pensacola, Warrington, Pace,
Milton, Gulf Breeze, Goulding, Bagdad, Myrtle Grove, Oriole Beach,
Navarre, Pensacola Beach, Navarre Beach, Pea Ridge and Floridatown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 100 PM CDT for northwestern
Florida.

LAT...LON 3029 8738 3041 8737 3062 8715 3070 8682
      3035 8682
TIME...MOT...LOC 1609Z 278DEG 36KT 3049 8710 3010 8714 

HAIL...1.00IN
WIND...60MPH
 
$$
353 
WWUS54 KMOB 031631
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1131 AM CDT MON APR 3 2017

FLC033-113-031640-
/O.CAN.KMOB.SV.W.0121.000000T0000Z-170403T1645Z/
Santa Rosa FL-Escambia FL-
1131 AM CDT MON APR 3 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SANTA ROSA AND
SOUTHEASTERN ESCAMBIA COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been cancelled.

A tornado watch remains in effect until 100 PM CDT for northwestern
Florida.

LAT...LON 3029 8738 3041 8737 3062 8715 3070 8682
      3035 8682
TIME...MOT...LOC 1628Z 280DEG 26KT 3047 8694 3008 8698 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 7:45 AM CDTSpecial Weather StatementMOBEscambia, Okaloosa, Santa Rosa45 min
Apr 3, 7:53 AM CDTFlash Flood WatchMOBEscambia, Okaloosa, Santa Rosa4 hr
Apr 3, 8:09 AM CDTSevere Thunderstorm WarningMOBEscambia, Santa Rosa51 min
Apr 3, 8:26 AM CDTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa64 min
Apr 3, 9:00 AM CDTSevere Thunderstorm WarningMOBEscambia60 min
Apr 3, 9:33 AM CDTAreal Flood AdvisoryMOBEscambia, Okaloosa, Santa Rosa3 hr
Apr 3, 9:36 AM CDTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa39 min
Apr 3, 9:43 AM CDTSevere Thunderstorm WarningMOBEscambia, Santa Rosa62 min
Apr 3, 9:59 AM CDTTornado WarningMOBOkaloosa31 min
Apr 3, 10:14 AM CDTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa46 min
Apr 3, 11:00 AM CDTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa31 min
Apr 3, 3:29 AM CDTSpecial Weather StatementMOBChoctaw46 min
Apr 3, 3:41 AM CDTSevere Thunderstorm WarningMOBChoctaw49 min
Apr 3, 5:10 AM CDTSevere Thunderstorm WarningMOBWashington50 min
Apr 3, 5:45 AM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke, Washington45 min
Apr 3, 5:57 AM CDTSevere Thunderstorm WarningMOBClarke, Mobile, Washington48 min
Apr 3, 6:28 AM CDTSevere Thunderstorm WarningMOBClarke, Washington47 min
Apr 3, 6:43 AM CDTSevere Thunderstorm WarningMOBBaldwin, Clarke, Escambia, Mobile, Monroe, Washington47 min
Apr 3, 6:53 AM CDTSpecial Marine WarningMOB97 min
Apr 3, 7:26 AM CDTSevere Thunderstorm WarningMOBBaldwin, Butler, Clarke, Conecuh, Escambia, Mobile and 2 more49 min
Apr 3, 7:27 AM CDTAreal Flood AdvisoryMOBBaldwin, Mobile3 hr
Apr 3, 7:55 AM CDTFlash Flood WarningMOBMobile4 hr
Apr 3, 8:26 AM CDTSpecial Marine WarningMOB94 min
Apr 3, 8:49 AM CDTSpecial Marine WarningMOB56 min
Apr 3, 8:54 AM CDTFlash Flood WarningMOBBaldwin4 hr
Apr 3, 8:54 AM CDTTornado WarningMOBCrenshaw13 min
Apr 3, 8:59 AM CDTSpecial Marine WarningMOB61 min
Apr 3, 9:33 AM CDTSpecial Marine WarningMOB87 min
Apr 3, 9:43 AM CDTRiver Flood WarningMOBChoctaw, Clarke, Washington8 days
Apr 3, 9:43 AM CDTRiver Flood WarningMOBChoctaw, Clarke, Washington9 days
Apr 3, 10:02 AM CDTSpecial Marine WarningMOB58 min
Apr 3, 10:55 AM CDTSpecial Marine WarningMOB2 hr
Apr 3, 12:54 PM CDTSpecial Marine WarningMOB66 min
Apr 3, 1:55 PM CDTSpecial Marine WarningMOB2 hr
Apr 3, 3:51 PM CDTSpecial Marine WarningMOB114 min
Apr 3, 5:38 PM CDTSpecial Marine WarningMOB67 min

Nearby

Severe Thunderstorm Warnings in Florida, 2017Severe 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.