Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 93, NWS Mobile, AL

June 7, 20114 counties in Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 7, 2011, 4:52 PM CDT for 4 counties in Alabama. It was in force for 38 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: Jun 7, 2011, 4:52 PM CDT (21:52 UTC)
Expired: Jun 7, 2011, 5:30 PM CDT
In force: 38 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Baldwin County, AL, Clarke County, AL, Escambia County, AL, Monroe County, AL

The radar

The Mobile radar (KMOB), 101 km from the middle of the area, began a volume at 21:54 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
Jun 7, 5:13 PM CDT	TSTM WND DMG	5 Wsw Uriah, AL	NUMEROUS TREES REPORTED BLOWN DOWN IN SEVERAL AREAS ACROSS SOUTHERN MONROE COUNTY.

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

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.9 hours before the alert went out and 218 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: 772 J/kg
Mixed-layer CIN: -166 J/kg
Mixed-layer LCL: 1496 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -40 m²/s²
0-3 km storm-relative helicity: -54 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.

230 
WUUS54 KMOB 072152
SVRMOB
ALC003-025-053-099-072230-
/O.NEW.KMOB.SV.W.0093.110607T2152Z-110607T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
452 PM CDT TUE JUN 7 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHWESTERN MONROE COUNTY IN SOUTH CENTRAL ALABAMA...  
  EXTREME NORTH BALDWIN COUNTY IN SOUTHWEST ALABAMA...  
  SOUTH CLARKE COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 530 PM CDT

* AT 449 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 11
  MILES SOUTHWEST OF FRISCO CITY...OR NEAR VOCATION...AND MOVING WEST
  AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HOMEWOOD AROUND 520 PM CDT...
  MT PLEASANT AND CHOCTAW BLUFF AROUND 530 PM CDT...

&&

LAT...LON 3135 8734 3132 8736 3131 8739 3127 8743
      3127 8738 3120 8741 3121 8785 3147 8779
TIME...MOT...LOC 2151Z 101DEG 14KT 3129 8748

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 12:33 AM CDT	Special Marine Warning	MOB		87 min
Jun 7, 2:11 AM CDT	Special Marine Warning	MOB		94 min
Jun 7, 3:16 AM CDT	Special Marine Warning	MOB		44 min
Jun 7, 4:10 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	35 min
Jun 7, 4:30 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Escambia	45 min
Jun 7, 4:36 PM CDT	Severe Thunderstorm Warning	MOB	Monroe	39 min
Jun 7, 4:46 PM CDT	Severe Thunderstorm Warning	MOB	Washington	44 min
Jun 7, 5:07 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Washington	16 min
Jun 7, 5:18 PM CDT	Severe Thunderstorm Warning	MOB	Washington	42 min
Jun 7, 5:19 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Escambia, Monroe, Washington	41 min
Jun 7, 5:35 PM CDT	Flash Flood Warning	MOB	Washington	4 hr
Jun 7, 5:39 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Choctaw, Clarke, Mobile, Monroe, Washington	51 min
Jun 7, 5:53 PM CDT	Severe Thunderstorm Warning	MOB	Washington	37 min
Jun 7, 6:08 PM CDT	Severe Thunderstorm Warning	MOB	Washington	52 min
Jun 7, 6:17 PM CDT	Severe Thunderstorm Warning	MOB	Mobile, Washington	43 min
Jun 7, 6:38 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	37 min
Jun 7, 6:47 PM CDT	Special Marine Warning	MOB		88 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every severe thunderstorm warning in 2011

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.