Alert archive / Alabama / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 21, NWS Mobile, AL

March 28, 2014Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 28, 2014, 9:15 AM CDT for Mobile County, Alabama. It was in force for 45 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: Mar 28, 2014, 9:15 AM CDT (14:15 UTC)
Expired: Mar 28, 2014, 10:00 AM CDT
In force: 45 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Mobile County, AL

The radar

The Mobile radar (KMOB), 29 km from the middle of the area, began a volume at 14:19 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, 2.3 hours before the alert went out and 149 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: 258 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 678 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 544 m²/s²
0-3 km storm-relative helicity: 729 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 11.3

Open this sounding in Storm Lab

The text

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

784 
WUUS54 KMOB 281415
SVRMOB
ALC097-281500-
/O.NEW.KMOB.SV.W.0021.140328T1415Z-140328T1500Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
915 AM CDT FRI MAR 28 2014

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 1000 AM CDT

* AT 914 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING
  WINDS OVER 60 MPH WAS LOCATED 6 MILES NORTH OF GRAND BAY...OR 13
  MILES SOUTHEAST OF WADE...AND MOVING SOUTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CODEN...              TILLMANS CORNER...    THEODORE...
  I10 AND I65...        GRAND BAY...          BELLE FONTAINE...
  BAYOU LA BATRE...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 1 AND 21.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE FOR DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 3032 8816 3032 8818 3034 8821 3036 8820
      3037 8827 3046 8841 3067 8841 3063 8805
      3060 8805 3057 8808 3053 8807 3051 8809
      3037 8810 3033 8813 3030 8813 3026 8809
TIME...MOT...LOC 1414Z 302DEG 23KT 3054 8834

$$

2 follow-up statements

750 
WWUS54 KMOB 281436
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
936 AM CDT FRI MAR 28 2014

ALC097-281500-
/O.CON.KMOB.SV.W.0021.000000T0000Z-140328T1500Z/
MOBILE AL-
936 AM CDT FRI MAR 28 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT
FOR SOUTH CENTRAL MOBILE COUNTY...

AT 933 AM CDT...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM
10 MILES SOUTHEAST OF POINT CLEAR TO 6 MILES SOUTHWEST OF DAUPHIN 
ISLAND...MOVING SOUTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  CODEN...              BELLE FONTAINE...     BAYOU LA BATRE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. PREPARE FOR DAMAGING WINDS. PEOPLE
OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 3032 8816 3032 8818 3034 8821 3036 8820
      3037 8825 3038 8826 3044 8824 3050 8819
      3056 8813 3063 8805 3057 8808 3053 8807
      3051 8809 3037 8810 3033 8813 3030 8813
      3026 8809
TIME...MOT...LOC 1436Z 314DEG 13KT 3033 8784 3020 8827

$$

808 
WWUS54 KMOB 281448
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
948 AM CDT FRI MAR 28 2014

ALC097-281500-
/O.CON.KMOB.SV.W.0021.000000T0000Z-140328T1500Z/
MOBILE AL-
948 AM CDT FRI MAR 28 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT 
FOR EXTREME SOUTHEAST MOBILE COUNTY...

AT 946 AM CDT...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM 5
MILES NORTHWEST OF GULF SHORES TO 6 MILES SOUTHEAST OF DAUPHIN
ISLAND...MOVING SOUTHEAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  RURAL EXTREME SOUTHEAST MOBILE COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. PREPARE FOR DAMAGING WINDS. PEOPLE
OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 3032 8816 3032 8818 3034 8821 3036 8820
      3037 8825 3038 8826 3037 8810 3033 8813
      3030 8813 3026 8809
TIME...MOT...LOC 1448Z 314DEG 13KT 3030 8773 3017 8816

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 28, 6:23 AM CDT	Areal Flood Advisory	MOB	Choctaw, Washington	3 hr
Mar 28, 6:57 AM CDT	Flash Flood Warning	MOB	Choctaw, Clarke, Washington	2 hr
Mar 28, 7:27 AM CDT	Areal Flood Advisory	MOB	Mobile	63 min
Mar 28, 8:24 AM CDT	Special Marine Warning	MOB		66 min
Mar 28, 8:49 AM CDT	Areal Flood Advisory	MOB	Mobile	116 min
Mar 28, 9:00 AM CDT	Areal Flood Warning	MOB	Washington	3 hr
Mar 28, 9:27 AM CDT	Special Marine Warning	MOB		93 min
Mar 28, 9:30 AM CDT	Special Marine Warning	MOB		90 min
Mar 28, 9:34 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	41 min
Mar 28, 9:41 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	64 min
Mar 28, 9:47 AM CDT	Areal Flood Advisory	MOB	Baldwin	118 min
Mar 28, 10:00 AM CDT	Areal Flood Advisory	MOB	Baldwin	2 hr
Mar 28, 10:09 AM CDT	Flash Flood Warning	MOB	Baldwin	3 hr
Mar 28, 10:31 AM CDT	Areal Flood Warning	MOB	Baldwin	3 hr
Mar 28, 10:54 AM CDT	Special Marine Warning	MOB		81 min
Mar 28, 12:39 PM CDT	Areal Flood Warning	MOB	Baldwin, Mobile	12 hr
Mar 28, 1:14 PM CDT	Flash Flood Watch	MOB	Choctaw, Clarke, Conecuh, Covington, Escambia, Monroe and 1 more	15 hr
Mar 28, 1:53 PM CDT	River Flood Warning	MOB	Baldwin	21 hr
Mar 28, 3:05 PM CDT	Small Craft Advisory	MOB		4 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.