Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 95, NWS Mobile, AL

June 7, 2011Washington County, Alabama; Greene County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jun 7, 2011, 5:18 PM CDT for Washington County, Alabama; Greene County, Mississippi. It was in force for 42 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: Jun 7, 2011, 5:18 PM CDT (22:18 UTC)
Expired: Jun 7, 2011, 6:00 PM CDT
In force: 42 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Washington County, AL, Greene County, MS

The radar

The Mobile radar (KMOB), 72 km from the middle of the area, began a volume at 22:18 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, 5:25 PM CDT	TSTM WND DMG	Fruitdale, AL	NUMEROUS TREES REPORTED BLOWN DOWN.
Jun 7, 6:08 PM CDT	HAIL 1	Topton, AL	QUARTER SIZE HAIL REPORTED.

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, 10.3 hours before the alert went out and 177 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: 639 J/kg
Mixed-layer CIN: -166 J/kg
Mixed-layer LCL: 1521 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 53 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.

391 
WUUS54 KMOB 072218
SVRMOB
ALC129-MSC041-072300-
/O.NEW.KMOB.SV.W.0095.110607T2218Z-110607T2300Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 600 PM CDT

* AT 513 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 10
  MILES SOUTHWEST OF CHATOM...OR 8 MILES SOUTHEAST OF STATE LINE...  
  AND IS MOSTLY STATIONARY....THOUGH HAS BEEN BACKBUILDING TO THE 
  SOUTHEAST.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ESCATAWPA AROUND 540 PM CDT...
  FOUR POINT AROUND 545 PM CDT...
  VINEGAR BEND...TIBBIE...DEER PARK AND SEABOARD AROUND 600 PM CDT...

&&

LAT...LON 3148 8837 3132 8811 3115 8830 3115 8832
      3135 8852
TIME...MOT...LOC 2217Z 313DEG 5KT 3136 8837

$$

1 follow-up statement

664 
WWUS54 KMOB 072243
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
543 PM CDT TUE JUN 7 2011

MSC041-072253-
/O.CAN.KMOB.SV.W.0095.000000T0000Z-110607T2300Z/
GREENE MS-
543 PM CDT TUE JUN 7 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GREENE COUNTY IS
CANCELLED...

LAT...LON 3146 8834 3134 8817 3122 8834 3132 8845
      3138 8845
TIME...MOT...LOC 2243Z 313DEG 5KT 3134 8834

$$

ALC129-072300-
/O.CON.KMOB.SV.W.0095.000000T0000Z-110607T2300Z/
WASHINGTON AL-
543 PM CDT TUE JUN 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR WEST CENTRAL WASHINGTON COUNTY...

AT 541 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR FOUR POINT...OR 10 MILES SOUTHWEST OF CHATOM...MOVING
SOUTHEAST AT 5 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  FOUR POINT BY 550 PM CDT...
  VINEGAR BEND AND TIBBIE BY 600 PM CDT...

LAT...LON 3146 8834 3134 8817 3122 8834 3132 8845
      3138 8845
TIME...MOT...LOC 2243Z 313DEG 5KT 3134 8834

$$

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, 4:52 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Escambia, Monroe	38 min
Jun 7, 5:07 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Washington	16 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
Jun 7, 2:29 PM CDT	Severe Thunderstorm Warning	MOB	Perry, Wayne	16 min
Jun 7, 2:31 PM CDT	Areal Flood Advisory	MOB	Perry	59 min
Jun 7, 2:50 PM CDT	Severe Thunderstorm Warning	MOB	Wayne	25 min
Jun 7, 3:19 PM CDT	Severe Thunderstorm Warning	MOB	Greene, Perry, Wayne	26 min
Jun 7, 3:57 PM CDT	Severe Thunderstorm Warning	MOB	Greene	33 min
Jun 7, 4:22 PM CDT	Areal Flood Advisory	MOB	Greene	113 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Severe Thunderstorm Warnings in Mississippi, 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.