Alert archive / Florida / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 1, NWS Mobile, AL

February 7, 2018Escambia County, Santa Rosa County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Feb 7, 2018, 10:25 AM CST for Escambia County, Santa Rosa County, Florida; Baldwin County, Alabama. It was in force for 50 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: Feb 7, 2018, 10:25 AM CST (16:25 UTC)
Expired: Feb 7, 2018, 11:15 AM CST
In force: 50 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), 90 km from the middle of the area, began a volume at 16:28 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, 4.4 hours before the alert went out and 227 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1223 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 509 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 274 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

As transmitted.

805 
WUUS54 KMOB 071625
SVRMOB
ALC003-FLC033-113-071715-
/O.NEW.KMOB.SV.W.0001.180207T1625Z-180207T1715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
1025 AM CST WED FEB 7 2018

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 1115 AM CST

* At 1025 AM CST, a severe thunderstorm was located near Perdido
  Beach, or 8 miles north of Orange Beach, moving east at 45 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,
  Gulf Breeze, Orange Beach, Goulding, Lillian, Myrtle Grove, Oriole
  Beach, Navarre, Perdido Beach, Elberta, Pensacola Beach and Navarre
  Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

&&

LAT...LON 3051 8766 3059 8688 3032 8684 3028 8768
TIME...MOT...LOC 1625Z 262DEG 39KT 3038 8754 

HAIL...1.00IN
WIND...60MPH
 
$$

2 follow-up statements

029 
WWUS54 KMOB 071645
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1045 AM CST WED FEB 7 2018

ALC003-FLC033-113-071715-
/O.CON.KMOB.SV.W.0001.000000T0000Z-180207T1715Z/
Baldwin AL-Santa Rosa FL-Escambia FL-
1045 AM CST WED FEB 7 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM CST
FOR SOUTHEASTERN BALDWIN...SOUTHERN SANTA ROSA AND SOUTHEASTERN
ESCAMBIA COUNTIES...

At 1044 AM CST, a severe thunderstorm was located over Myrtle Grove,
or over West Pensacola, moving east at 35 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,
Gulf Breeze, Orange Beach, Goulding, Lillian, Myrtle Grove, Oriole
Beach, Navarre, Perdido Beach, Elberta, Pensacola Beach and Navarre
Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

&&

LAT...LON 3051 8766 3059 8688 3032 8684 3028 8768
TIME...MOT...LOC 1644Z 262DEG 39KT 3041 8729 

HAIL...1.00IN
WIND...60MPH
 
$$

372 
WWUS54 KMOB 071705
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1105 AM CST WED FEB 7 2018

ALC003-FLC033-113-071715-
/O.EXP.KMOB.SV.W.0001.000000T0000Z-180207T1715Z/
Baldwin AL-Santa Rosa FL-Escambia FL-
1105 AM CST WED FEB 7 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BALDWIN...
SOUTHERN SANTA ROSA AND SOUTHEASTERN ESCAMBIA COUNTIES WILL EXPIRE AT
1115 AM CST...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

LAT...LON 3051 8766 3059 8688 3032 8684 3028 8768
TIME...MOT...LOC 1705Z 262DEG 39KT 3044 8704 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 7, 9:48 AM CST	Special Weather Statement	MOB	Escambia, Santa Rosa	57 min
Feb 7, 11:10 AM CST	Special Weather Statement	MOB	Escambia, Okaloosa, Santa Rosa	80 min
Feb 7, 12:09 PM CST	Special Weather Statement	MOB	Okaloosa	66 min
Feb 7, 3:25 AM CST	Marine Dense Fog Advisory	MOB		7 hr
Feb 7, 6:43 AM CST	Special Weather Statement	MOB	Choctaw	47 min
Feb 7, 7:25 AM CST	Special Weather Statement	MOB	Choctaw	50 min
Feb 7, 7:47 AM CST	Special Weather Statement	MOB	Wilcox	43 min
Feb 7, 8:34 AM CST	River Flood Warning	MOB	Choctaw, Clarke, Washington	13 days
Feb 7, 8:34 AM CST	River Flood Warning	MOB	Choctaw, Clarke, Washington	13 days
Feb 7, 10:34 AM CST	Severe Thunderstorm Warning	MOB	Covington	33 min
Feb 7, 11:26 AM CST	Special Marine Warning	MOB		64 min
Feb 7, 11:42 AM CST	Special Marine Warning	MOB		93 min
Feb 7, 1:06 PM CST	Special Marine Warning	MOB		84 min
Feb 7, 2:25 PM CST	Special Marine Warning	MOB		95 min
Feb 7, 3:24 PM CST	Small Craft Advisory	MOB		24 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2018 Severe Thunderstorm Warnings in Alabama, 2018 Every severe thunderstorm warning in 2018

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.