Alert archive / Florida / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 63, NWS Mobile, AL

June 28, 2018Escambia County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 28, 2018, 7:50 PM CDT for Escambia County, Florida; Baldwin County, Alabama. It was in force for 25 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: Jun 28, 2018, 7:50 PM CDT (00:50 UTC)
Expired: Jun 28, 2018, 8:15 PM CDT
In force: 25 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Baldwin County, AL, Escambia County, FL

The radar

The Mobile radar (KMOB), 70 km from the middle of the area, began a volume at 00:49 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.

Issued	Product	Office	Lasted
Jun 28, 4:59 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.8 hours before the alert went out and 216 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: 2357 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1558 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

978 
WUUS54 KMOB 290050
SVRMOB
ALC003-FLC033-290115-
/O.NEW.KMOB.SV.W.0063.180629T0050Z-180629T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
750 PM CDT THU JUN 28 2018

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Northeastern Baldwin County in southwestern Alabama...
  Northwestern Escambia County in northwestern Florida...

* Until 815 PM CDT.

* At 750 PM CDT, severe thunderstorms were located along a line
  extending from 7 miles east of Stockton to 11 miles southwest of
  Bratt to Molino, moving southeast at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Molino.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Damaging winds and continuous cloud to ground lightning is occurring 
with these storms. Move indoors immediately. Lightning is one of 
nature's leading killers. Remember, if you can hear thunder, you are 
close enough to be struck by lightning.

&&

LAT...LON 3083 8773 3123 8784 3125 8783 3124 8763
      3117 8762 3100 8762 3100 8758 3096 8757
      3087 8733 3065 8729
TIME...MOT...LOC 0050Z 335DEG 29KT 3099 8774 3083 8754 3070 8731 

HAIL...<.75IN
WIND...60MPH
 
$$

1 follow-up statement

588 
WWUS54 KMOB 290116
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
816 PM CDT THU JUN 28 2018

ALC003-FLC033-290126-
/O.EXP.KMOB.SV.W.0063.000000T0000Z-180629T0115Z/
Baldwin AL-Escambia FL-
816 PM CDT THU JUN 28 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BALDWIN AND
NORTHWESTERN ESCAMBIA COUNTIES HAS EXPIRED...
            
The storms which prompted the warning have weakened below severe
limits, herefore, the warning has been allowed to expire.  However 
gusty winds are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
southwestern Alabama...and northwestern Florida.

LAT...LON 3083 8773 3123 8784 3125 8783 3124 8763
      3117 8762 3100 8762 3100 8758 3096 8757
      3087 8733 3065 8729
TIME...MOT...LOC 0116Z 335DEG 29KT 3082 8765 3066 8745 3053 8722 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 7:34 PM CDT	Severe Thunderstorm Warning	MOB	Escambia, Okaloosa, Santa Rosa	41 min
Jun 28, 8:21 PM CDT	Special Weather Statement	MOB	Escambia	39 min
Jun 29, 4:27 PM CDT	Special Weather Statement	MOB	Okaloosa	33 min
Jun 28, 7:05 PM CDT	Special Weather Statement	MOB	Conecuh, Escambia	40 min
Jun 28, 7:11 PM CDT	Special Marine Warning	MOB		64 min
Jun 28, 7:15 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Mobile, Washington	45 min
Jun 28, 7:24 PM CDT	Special Weather Statement	MOB	Clarke	51 min
Jun 28, 7:38 PM CDT	Special Marine Warning	MOB		82 min
Jun 28, 8:02 PM CDT	Special Marine Warning	MOB		88 min
Jun 28, 8:07 PM CDT	Special Weather Statement	MOB	Baldwin, Mobile, Washington	38 min
Jun 28, 8:32 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	43 min
Jun 28, 8:44 PM CDT	Special Marine Warning	MOB		91 min
Jun 28, 8:49 PM CDT	Special Marine Warning	MOB		26 min
Jun 28, 9:16 PM CDT	Special Weather Statement	MOB	Mobile	44 min
Jun 28, 9:26 PM CDT	Special Marine Warning	MOB		2 hr
Jun 28, 10:10 PM CDT	Special Marine Warning	MOB		68 min
Jun 28, 11:15 PM CDT	Special Marine Warning	MOB		60 min

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.