Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 62, NWS Mobile, AL

April 10, 2021Baldwin County, Mobile County, Alabama; Escambia County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Apr 10, 2021, 6:20 AM CDT for Baldwin County, Mobile County, Alabama; Escambia County, Florida. It was in force for 40 min. 7 reports 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: Apr 10, 2021, 6:20 AM CDT (11:20 UTC)
Expired: Apr 10, 2021, 7:00 AM CDT
In force: 40 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), 37 km from the middle of the area, began a volume at 11:24 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
Apr 10, 6:29 AM CDT	TSTM WND GST 79	2 E West End Dauphin Is, AL	PRIVATE WEATHER STATION, KALDAUPH6, MEASURED A 79 MPH THUNDERSTORM WIND GUST.
Apr 10, 6:33 AM CDT	MARINE TSTM WIND 75	East End Of Dauphin, AL	DPIA1 MEASURED A THUNDERSTORM WIND GUST OF 65 KT, 75 MPH.
Apr 10, 6:45 AM CDT	TSTM WND DMG	Summerdale, AL	BALDWIN COUNTY EMA RELAYED A REPORT OF ROOFS BLOWN OFF THE DUGOUTS AT THE SUMMERDALE BALL PARK. TIME ESTIMATED FROM RADAR.
Apr 10, 6:54 AM CDT	TSTM WND GST 58	1 Sw Gulf Shores, AL	PRIVATE WEATHER STATION KALGULFS41 RECORDED A 58 MPH THUNDERSTORM WIND GUST.
Apr 10, 6:57 AM CDT	TSTM WND GST 69	2 Wsw Miflin, AL	WEATHERFLOW STATION (XGLF) IN GULF SHORES GUSTED TO 69 MPH.
Apr 10, 7:02 AM CDT	MARINE TSTM WIND 40	Orange Beach, AL	MARINE THUNDERSTORM WIND GUST OF 40 MPH AT THE MESONET STATION IN ORANGE BEACH.
Apr 10, 7:03 AM CDT	MARINE TSTM WIND 54	2 Sw Gulf Shores, AL	MARINE THUNDERSTORM WIND GUST OF 54 MPH AT THE MESONET STATION IN GULF SHORES.

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
Apr 10, 2:30 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.3 hours before the alert went out and 151 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: 2977 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 599 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 3.4
Supercell composite: 18.1

Open this sounding in Storm Lab

The text

As transmitted.

654 
WUUS54 KMOB 101120
SVRMOB
ALC003-097-FLC033-101200-
/O.NEW.KMOB.SV.W.0062.210410T1120Z-210410T1200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
620 AM CDT Sat Apr 10 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southwestern Mobile County in southwestern Alabama...
  Southern Baldwin County in southwestern Alabama...
  South central Escambia County in northwestern Florida...

* Until 700 AM CDT.

* At 620 AM CDT, severe thunderstorms were located along a line
  extending from near Spanish Fort to 7 miles southeast of Petit Bois
  Island, moving southeast at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Daphne, Fairhope, Gulf Shores, Foley, Orange Beach, Spanish Fort,
  Robertsdale, Bayou La Batre, Point Clear, Dauphin Island, Loxley,
  Lillian, Magnolia Springs, Stapleton, Bon Secour, Summerdale,
  Silverhill, Perdido Beach, Elberta and Coden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 AM CDT for southwestern
Alabama...and northwestern Florida.

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

&&

LAT...LON 3022 8838 3033 8840 3034 8840 3035 8839
      3037 8840 3038 8841 3080 8781 3034 8733
      3022 8746
TIME...MOT...LOC 1120Z 325DEG 45KT 3069 8787 3012 8844 

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

2 follow-up statements

202 
WWUS54 KMOB 101130
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
630 AM CDT Sat Apr 10 2021

ALC003-097-FLC033-101200-
/O.CON.KMOB.SV.W.0062.000000T0000Z-210410T1200Z/
Mobile AL-Baldwin AL-Escambia FL-
630 AM CDT Sat Apr 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 AM CDT
FOR SOUTHWESTERN MOBILE...SOUTHERN BALDWIN AND SOUTH CENTRAL ESCAMBIA
COUNTIES...

At 630 AM CDT, severe thunderstorms were located along a line
extending from 3 miles west of Loxley to 14 miles southeast of Petit
Bois Island, moving southeast at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Daphne, Fairhope, Gulf Shores, Foley, Orange Beach, Spanish Fort,
Robertsdale, Bayou La Batre, Point Clear, Dauphin Island, Loxley,
Lillian, Magnolia Springs, Stapleton, Bon Secour, Summerdale,
Silverhill, Perdido Beach, Elberta and Coden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 AM CDT for southwestern
Alabama...and northwestern Florida.

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

&&

LAT...LON 3022 8838 3033 8840 3034 8840 3035 8839
      3037 8840 3038 8841 3080 8781 3034 8733
      3022 8746
TIME...MOT...LOC 1130Z 325DEG 45KT 3061 8780 3004 8837 

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

935 
WWUS54 KMOB 101149
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
649 AM CDT Sat Apr 10 2021

ALC097-101158-
/O.CAN.KMOB.SV.W.0062.000000T0000Z-210410T1200Z/
Mobile AL-
649 AM CDT Sat Apr 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN 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 800 AM CDT for southwestern
Alabama...and northwestern Florida.

LAT...LON 3023 8810 3025 8808 3026 8808 3035 8800
      3036 8797 3037 8798 3069 8771 3034 8733
      3022 8746
TIME...MOT...LOC 1148Z 325DEG 45KT 3044 8766 2987 8823 

$$

ALC003-FLC033-101200-
/O.CON.KMOB.SV.W.0062.000000T0000Z-210410T1200Z/
Baldwin AL-Escambia FL-
649 AM CDT Sat Apr 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 AM CDT
FOR SOUTHERN BALDWIN AND SOUTH CENTRAL ESCAMBIA COUNTIES...

At 648 AM CDT, severe thunderstorms were located along a line
extending from near Foley to 27 miles south of Dauphin Island, moving
southeast at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Gulf Shores, Foley, Orange Beach, Robertsdale, Loxley, Lillian,
Magnolia Springs, Bon Secour, Summerdale, Silverhill, Perdido Beach,
Elberta and Fort Morgan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 AM CDT for southwestern
Alabama...and northwestern Florida.

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

&&

LAT...LON 3023 8810 3025 8808 3026 8808 3035 8800
      3036 8797 3037 8798 3069 8771 3034 8733
      3022 8746
TIME...MOT...LOC 1148Z 325DEG 45KT 3044 8766 2987 8823 

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

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 9:31 PM CDT	River Flood Warning	MOB	Mobile	63 hr
Apr 10, 1:06 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw	54 min
Apr 10, 1:15 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Washington	45 min
Apr 10, 1:33 AM CDT	Special Marine Warning	MOB		87 min
Apr 10, 1:58 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington, Wilcox	62 min
Apr 10, 2:22 AM CDT	Special Weather Statement	MOB	Mobile	68 min
Apr 10, 2:35 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	25 min
Apr 10, 2:43 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	17 min
Apr 10, 2:50 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	55 min
Apr 10, 2:59 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Butler, Clarke, Conecuh, Escambia, Mobile and 3 more	61 min
Apr 10, 3:36 AM CDT	Special Marine Warning	MOB		114 min
Apr 10, 3:53 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Butler, Conecuh, Covington, Escambia, Mobile and 2 more	67 min
Apr 10, 4:07 AM CDT	Areal Flood Advisory	MOB	Baldwin, Escambia, Mobile	3 hr
Apr 10, 4:33 AM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington, Crenshaw, Escambia	57 min
Apr 10, 4:53 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Covington, Escambia	52 min
Apr 10, 5:10 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Apr 10, 5:28 AM CDT	Special Marine Warning	MOB		2 hr
Apr 10, 5:40 AM CDT	Flash Flood Warning	MOB	Baldwin	6 hr
Apr 10, 5:44 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Covington, Escambia	61 min
Apr 10, 5:53 AM CDT	Flash Flood Warning	MOB	Mobile	6 hr
Apr 10, 6:04 AM CDT	Special Marine Warning	MOB		86 min
Apr 10, 6:48 AM CDT	Special Marine Warning	MOB		87 min
Apr 10, 6:52 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	53 min
Apr 10, 7:12 AM CDT	Special Marine Warning	MOB		63 min
Apr 10, 7:30 AM CDT	Special Marine Warning	MOB		90 min
Apr 10, 9:28 AM CDT	River Flood Warning	MOB	Baldwin	11 hr
Apr 10, 9:33 AM CDT	River Flood Warning	MOB	Baldwin	5 hr
Apr 10, 3:46 AM CDT	Special Weather Statement	MOB	Escambia, Santa Rosa	44 min
Apr 10, 4:30 AM CDT	Special Weather Statement	MOB	Okaloosa	45 min
Apr 10, 5:57 AM CDT	Tornado Warning	MOB	Okaloosa	33 min
Apr 10, 6:18 AM CDT	Tornado Warning	MOB	Okaloosa	12 min
Apr 10, 7:35 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	41 min
Apr 10, 7:39 AM CDT	Flash Flood Warning	MOB	Okaloosa	5 hr
Apr 10, 9:38 AM CDT	River Flood Warning	MOB	Okaloosa	11 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2021 Severe Thunderstorm Warnings in Florida, 2021 Every severe thunderstorm warning in 2021

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.