Alert archive / Alabama / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 8, NWS Mobile, AL

February 21, 2014Baldwin County, Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Feb 21, 2014, 1:52 AM CST for Baldwin County, Mobile County, Alabama. It was in force for 53 min. 2 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: Feb 21, 2014, 1:52 AM CST (07:52 UTC)
Expired: Feb 21, 2014, 2:45 AM CST
In force: 53 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Baldwin County, AL, Mobile County, AL

The radar

The Mobile radar (KMOB), 22 km from the middle of the area, began a volume at 07:53 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 21, 2:00 AM CST	TSTM WND DMG	3 Sw Seven Hills, AL	NWS EMPLOYEE REPORTS ONE LARGE TREE DOWNED BY THUNDERSTORM WINDS ALONG NEWMAN ROAD.
Feb 21, 2:30 AM CST	TSTM WND DMG	1 Ne Bay Minette, AL	BALDWIN COUNTY EMA REPORTS THAT THUNDERSTORM WINDS KNOCKED DOWN A LARGE TREE NEAR BAY MINETTE.

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 21, 12:58 AM CST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 7.9 hours before the alert went out and 157 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: 1934 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 183 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 9.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

620 
WUUS54 KMOB 210752
SVRMOB
ALC003-097-210845-
/O.NEW.KMOB.SV.W.0008.140221T0752Z-140221T0845Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
152 AM CST FRI FEB 21 2014

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL BALDWIN COUNTY IN SOUTHWEST ALABAMA...
  SOUTHERN MOBILE COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 245 AM CST

* AT 148 AM CST...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
  DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM
  7 MILES WEST OF SATSUMA TO 9 MILES NORTH OF GRAND BAY TO 6 MILES
  WEST OF PASCAGOULA...AND MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MIDTOWN MOBILE...     DOWNTOWN MOBILE...    CODEN...
  TILLMANS CORNER...    THEODORE...           SEMMES...
  SATSUMA...            SARALAND...           PRICHARD...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 1 AND 44. THIS
INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 1 AND 30.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CST FRIDAY
MORNING FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3037 8826 3039 8833 3038 8839 3065 8842
      3094 8819 3095 8761 3068 8774 3043 8792
      3049 8795 3057 8791 3065 8793 3067 8797
      3067 8801 3063 8805 3033 8813 3032 8820
      3035 8820 3037 8825 3031 8826
TIME...MOT...LOC 0752Z 264DEG 33KT 3088 8814 3061 8834
          3035 8860

$$

1 follow-up statement

027 
WWUS54 KMOB 210820
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
220 AM CST FRI FEB 21 2014

ALC003-097-210845-
/O.CON.KMOB.SV.W.0008.000000T0000Z-140221T0845Z/
BALDWIN AL-MOBILE AL-
220 AM CST FRI FEB 21 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM CST
FOR SOUTHERN MOBILE AND WEST CENTRAL BALDWIN COUNTIES...

AT 216 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM 7 MILES NORTHWEST OF BAY MINETTE TO SPANISH FORT TO 6 
MILES WEST OF BAYOU LA BATRE...MOVING EAST AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
DOWNTOWN MOBILE...DAPHNE...FAIRHOPE...AND THEODORE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY. LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CST FRIDAY
MORNING FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3037 8826 3039 8833 3038 8839 3050 8840
      3066 8825 3094 8802 3095 8761 3068 8774
      3043 8792 3049 8795 3057 8791 3065 8793
      3067 8797 3067 8801 3063 8805 3033 8813
      3032 8820 3035 8820 3037 8825 3031 8826
TIME...MOT...LOC 0820Z 264DEG 33KT 3094 8783 3066 8793
          3037 8831

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 20, 7:51 PM CST	Marine Dense Fog Advisory	MOB		7 hr
Feb 20, 7:55 PM CST	Tornado Warning	MOB	Clarke, Washington	35 min
Feb 20, 8:27 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Wilcox	63 min
Feb 20, 10:31 PM CST	Areal Flood Advisory	MOB	Choctaw	3 hr
Feb 20, 10:57 PM CST	Severe Thunderstorm Warning	MOB	Choctaw, Washington	78 min
Feb 21, 12:10 AM CST	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	80 min
Feb 21, 12:34 AM CST	Areal Flood Advisory	MOB	Baldwin, Choctaw, Clarke, Mobile, Washington	116 min
Feb 21, 1:04 AM CST	Severe Thunderstorm Warning	MOB	Clarke, Monroe, Wilcox	41 min
Feb 21, 1:48 AM CST	Areal Flood Advisory	MOB	Baldwin, Clarke, Escambia, Mobile, Monroe	117 min
Feb 21, 1:57 AM CST	Special Marine Warning	MOB		93 min
Feb 21, 2:34 AM CST	Severe Thunderstorm Warning	MOB	Baldwin	56 min
Feb 21, 2:46 AM CST	Areal Flood Advisory	MOB	Butler, Conecuh, Escambia, Monroe	119 min
Feb 21, 3:04 AM CST	Wind Advisory	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more	6 hr
Feb 21, 3:37 AM CST	Areal Flood Advisory	MOB	Baldwin, Butler, Conecuh, Covington, Crenshaw, Escambia	113 min
Feb 21, 3:54 AM CST	Areal Flood Advisory	MOB	Baldwin	2 hr
Feb 21, 3:54 AM CST	Special Marine Warning	MOB		96 min
Feb 21, 4:30 AM CST	Special Marine Warning	MOB		90 min
Feb 21, 4:42 AM CST	Special Marine Warning	MOB		93 min
Feb 21, 5:25 AM CST	Special Marine Warning	MOB		95 min
Feb 21, 10:46 AM CST	River Flood Warning	MOB	Choctaw, Clarke, Washington	3 days

Nearby

Severe Thunderstorm Warnings in Alabama, 2014 Every severe thunderstorm warning in 2014

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.