Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 115, NWS Mobile, AL

July 3, 2012Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 3, 2012, 4:25 PM CDT for Baldwin County, Alabama. It was in force for 23 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: Jul 3, 2012, 4:25 PM CDT (21:25 UTC)
Expired: Jul 3, 2012, 4:48 PM CDT
In force: 23 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 49 km from the middle of the area, began a volume at 21:26 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
Jul 3, 4:45 PM CDT	TSTM WND DMG	Silverhill, AL	SEVERAL TREES DOWN IN SILVERHILL, ONE TREE DOWN ON A HOUSE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.4 hours before the alert went out and 192 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: 1652 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 1075 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

222 
WUUS54 KMOB 032125
SVRMOB
ALC003-032230-
/O.NEW.KMOB.SV.W.0115.120703T2125Z-120703T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
425 PM CDT TUE JUL 3 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 530 PM CDT

* AT 421 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING         
  QUARTER SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED       
  NEAR ROBERTSDALE. THE STORM WAS NEARLY STATIONARY.

* LOCATIONS IMPACTED INCLUDE...
  SUMMERDALE...         SILVERHILL...         ROBERTSDALE...
  LOXLEY...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 42 AND 54.

LAT...LON 3069 8772 3062 8759 3051 8759 3045 8775
      3050 8789 3063 8789
TIME...MOT...LOC 2124Z 316DEG 3KT 3057 8775

$$

1 follow-up statement

148 
WWUS54 KMOB 032148
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
448 PM CDT TUE JUL 3 2012

ALC003-032157-
/O.CAN.KMOB.SV.W.0115.000000T0000Z-120703T2230Z/
BALDWIN AL-
448 PM CDT TUE JUL 3 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR CENTRAL
BALDWIN COUNTY...

AT 444 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR CENTRAL 
BALDWIN COUNTY WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE 
THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 3069 8772 3062 8759 3051 8759 3045 8775
      3050 8789 3063 8789
TIME...MOT...LOC 2147Z 180DEG 0KT 3057 8775

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 1:58 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	32 min
Jul 3, 2:47 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Escambia, Monroe	32 min
Jul 3, 2:53 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	25 min
Jul 3, 3:14 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Escambia	61 min
Jul 3, 3:31 PM CDT	Severe Thunderstorm Warning	MOB	Mobile, Washington	31 min
Jul 3, 3:43 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	36 min
Jul 3, 4:01 PM CDT	Special Marine Warning	MOB		89 min
Jul 3, 4:43 PM CDT	Severe Thunderstorm Warning	MOB	Covington, Crenshaw	62 min
Jul 3, 5:14 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	49 min
Jul 3, 6:27 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	29 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every severe thunderstorm warning in 2012

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.