Alert archive / Alabama / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 80, NWS Mobile, AL

February 7, 2017Baldwin County, Mobile County, Alabama; Escambia County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Feb 7, 2017, 1:46 PM CST for Baldwin County, Mobile County, Alabama; Escambia County, Florida. It was in force for 44 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, 1:46 PM CST (19:46 UTC)
Expired: Feb 7, 2017, 2:30 PM CST
In force: 44 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Baldwin County, AL, Mobile County, AL, Escambia County, FL

The radar

The Mobile radar (KMOB), 76 km from the middle of the area, began a volume at 19:48 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

Time	Report	Where	Remark
Feb 7, 1:50 PM CST	TSTM WND DMG	6 Sw Bay Minette, AL	TREE DOWN ON COUNTY ROAD 39

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.

Issued	Product	Office	Lasted
Feb 7, 11:50 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.8 hours before the alert went out and 222 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: 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.

423 
WUUS54 KMOB 071946
SVRMOB
ALC003-097-FLC033-072030-
/O.NEW.KMOB.SV.W.0080.170207T1946Z-170207T2030Z/

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

The National Weather Service in Mobile has issued a

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

* Until 230 PM CST

* At 146 PM CST, severe thunderstorms were located along a line
  extending from near Stockton to 7 miles north of Spanish Fort to
  near I10 And I65, moving east at 55 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Midtown Mobile, Downtown Mobile, Pensacola, Prichard, Ensley,
  Daphne, Tillmans Corner, Gonzalez, Bay Minette, Atmore, Spanish
  Fort, Robertsdale, Century, Flomaton, Loxley, Stockton, Stapleton,
  Molino, Silverhill and Bratt.

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 600 PM CST for south central
and southwestern Alabama...and northwestern Florida.

LAT...LON 3059 8823 3080 8803 3110 8799 3110 8762
      3100 8761 3100 8716 3092 8729 3085 8731
      3081 8729 3074 8731 3071 8727 3063 8726
      3062 8724 3062 8726 3060 8724 3060 8722
      3058 8722 3060 8720 3058 8717 3043 8732
TIME...MOT...LOC 1946Z 275DEG 49KT 3103 8793 3078 8793 3064 8815 

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

1 follow-up statement

684 
WWUS54 KMOB 072002
SVSMOB

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

ALC097-072012-
/O.CAN.KMOB.SV.W.0080.000000T0000Z-170207T2030Z/
Mobile AL-
202 PM CST TUE FEB 7 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MOBILE 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 600 PM CST for south central
and southwestern Alabama...and northwestern Florida.

LAT...LON 3057 8810 3059 8806 3063 8806 3078 8795
      3110 8779 3110 8762 3100 8761 3100 8716
      3092 8729 3085 8731 3081 8729 3079 8731
      3074 8731 3071 8727 3062 8726 3058 8722
      3060 8720 3058 8717 3043 8732
TIME...MOT...LOC 2002Z 275DEG 49KT 3101 8769 3076 8769 3062 8791 

$$

ALC003-FLC033-072030-
/O.CON.KMOB.SV.W.0080.000000T0000Z-170207T2030Z/
Baldwin AL-Escambia FL-
202 PM CST TUE FEB 7 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CST
FOR CENTRAL BALDWIN AND ESCAMBIA COUNTIES...

At 202 PM CST, severe thunderstorms were located along a line
extending from 9 miles east of Stockton to 6 miles east of Stapleton
to Daphne, moving east at 55 mph.

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

SOURCE...Radar indicated. 

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

Locations impacted include...
Pensacola, Ensley, Daphne, Gonzalez, Bay Minette, Atmore, Spanish
Fort, Robertsdale, Century, Flomaton, Loxley, Stapleton, Molino,
Silverhill, Bratt and I65 And AL 225.

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 600 PM CST for south central
and southwestern Alabama...and northwestern Florida.

LAT...LON 3057 8810 3059 8806 3063 8806 3078 8795
      3110 8779 3110 8762 3100 8761 3100 8716
      3092 8729 3085 8731 3081 8729 3079 8731
      3074 8731 3071 8727 3062 8726 3058 8722
      3060 8720 3058 8717 3043 8732
TIME...MOT...LOC 2002Z 275DEG 49KT 3101 8769 3076 8769 3062 8791 

HAIL...0.75IN
WIND...60MPH
 
$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 7, 5:58 AM CST	Rip Current Statement	MOB	Baldwin, Mobile	42 hr
Feb 7, 10:16 AM CST	Severe Thunderstorm Warning	MOB	Choctaw, Washington	59 min
Feb 7, 10:29 AM CST	Special Weather Statement	MOB	Clarke	46 min
Feb 7, 10:47 AM CST	Special Weather Statement	MOB	Mobile	28 min
Feb 7, 10:57 AM CST	Special Marine Warning	MOB		33 min
Feb 7, 11:17 AM CST	Special Weather Statement	MOB	Clarke, Washington	43 min
Feb 7, 11:33 AM CST	Severe Thunderstorm Warning	MOB	Clarke, Monroe, Washington, Wilcox	42 min
Feb 7, 12:06 PM CST	Special Weather Statement	MOB	Escambia	39 min
Feb 7, 12:12 PM CST	Special Weather Statement	MOB	Conecuh, Monroe	33 min
Feb 7, 12:34 PM CST	Special Marine Warning	MOB		41 min
Feb 7, 12:42 PM CST	Special Marine Warning	MOB		63 min
Feb 7, 12:49 PM CST	Special Weather Statement	MOB	Butler, Crenshaw	41 min
Feb 7, 1:00 PM CST	Special Weather Statement	MOB	Baldwin, Mobile	30 min
Feb 7, 1:06 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	39 min
Feb 7, 1:11 PM CST	Severe Thunderstorm Warning	MOB	Mobile	49 min
Feb 7, 1:21 PM CST	Areal Flood Advisory	MOB	Mobile	3 hr
Feb 7, 1:27 PM CST	Special Weather Statement	MOB	Baldwin	48 min
Feb 7, 1:44 PM CST	Special Marine Warning	MOB		46 min
Feb 7, 1:49 PM CST	Special Marine Warning	MOB		56 min
Feb 7, 1:52 PM CST	Special Weather Statement	MOB	Conecuh	38 min
Feb 7, 2:02 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	58 min
Feb 7, 2:20 PM CST	Special Weather Statement	MOB	Butler, Conecuh, Crenshaw	40 min
Feb 7, 2:26 PM CST	Special Weather Statement	MOB	Covington, Escambia	49 min
Feb 7, 2:30 PM CST	Special Marine Warning	MOB		45 min
Feb 7, 2:32 PM CST	Special Marine Warning	MOB		58 min
Feb 7, 2:33 PM CST	Special Marine Warning	MOB		42 min
Feb 7, 2:45 PM CST	Special Marine Warning	MOB		60 min
Feb 7, 2:49 PM CST	Small Craft Advisory	MOB		9 hr
Feb 7, 2:57 PM CST	Areal Flood Advisory	MOB	Baldwin, Mobile	3 hr
Feb 7, 2:58 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	62 min
Feb 7, 3:01 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	59 min
Feb 7, 3:10 PM CST	Special Weather Statement	MOB	Covington	35 min
Feb 7, 3:14 PM CST	Special Marine Warning	MOB		61 min
Feb 7, 3:27 PM CST	Special Marine Warning	MOB		63 min
Feb 7, 3:40 PM CST	Special Marine Warning	MOB		65 min
Feb 7, 3:59 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	46 min
Feb 7, 4:04 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	41 min
Feb 7, 4:14 PM CST	Special Marine Warning	MOB		61 min
Feb 7, 4:25 PM CST	Special Marine Warning	MOB		65 min
Feb 7, 4:44 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	35 min
Feb 7, 4:48 PM CST	Special Marine Warning	MOB		27 min
Feb 7, 4:49 PM CST	Special Weather Statement	MOB	Wilcox	41 min
Feb 7, 5:02 PM CST	Special Weather Statement	MOB	Conecuh	43 min
Feb 7, 5:12 PM CST	Special Marine Warning	MOB		63 min
Feb 7, 1:09 PM CST	Special Weather Statement	MOB	Okaloosa	51 min
Feb 7, 5:44 PM CST	Special Weather Statement	MOB	Escambia	46 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2017 Severe Thunderstorm Warnings in Florida, 2017 Every 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.