Alert archive / Alabama / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 13, NWS Mobile, AL

February 10, 2013Choctaw County, Clarke County, Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Feb 10, 2013, 5:17 PM CST for Choctaw County, Clarke County, Washington County, Alabama. It was in force for 58 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: Feb 10, 2013, 5:17 PM CST (23:17 UTC)
Expired: Feb 10, 2013, 6:15 PM CST
In force: 58 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Choctaw County, AL, Clarke County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 138 km from the middle of the area, began a volume at 23:18 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
Feb 10, 6:00 PM CST	HAIL 1.75	Coffeeville, AL	GOLF BALL SIZE HAIL AND TREES DOWN IN COFFEEVILLE.

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 10, 3:14 PM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.3 hours before the alert went out and 186 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1188 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 319 m²/s²
0-3 km storm-relative helicity: 364 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.

533 
WUUS54 KMOB 102317
SVRMOB
ALC023-025-129-110015-
/O.NEW.KMOB.SV.W.0013.130210T2317Z-130211T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
517 PM CST SUN FEB 10 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
  NORTHWESTERN CLARKE COUNTY IN SOUTHWEST ALABAMA...
  NORTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 615 PM CST

* AT 513 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING
  WINDS OVER 60 MPH WAS LOCATED 6 MILES EAST OF WAYNESBORO...OR 8
  MILES NORTH OF BUCKATUNNA...AND MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  TOXEY...              SILAS...              GILBERTOWN...
  THOMASVILLE...        COFFEEVILLE...        MILLRY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CST SUNDAY EVENING
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3200 8810 3201 8808 3199 8806 3200 8769
      3185 8769 3153 8845 3184 8846 3203 8811
TIME...MOT...LOC 2317Z 241DEG 46KT 3167 8851

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 10, 4:22 AM CST	Flash Flood Watch	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more	65 hr
Feb 10, 10:51 AM CST	River Flood Warning	MOB	Escambia	24 days
Feb 10, 4:45 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Washington	60 min
Feb 10, 4:48 PM CST	Severe Thunderstorm Warning	MOB	Choctaw, Washington	57 min
Feb 10, 4:50 PM CST	Tornado Warning	MOB	Clarke, Washington	55 min
Feb 10, 5:27 PM CST	Tornado Warning	MOB	Choctaw, Washington	48 min
Feb 10, 5:30 PM CST	Tornado Warning	MOB	Clarke, Monroe, Wilcox	60 min
Feb 10, 5:40 PM CST	Tornado Warning	MOB	Choctaw, Clarke, Washington	65 min
Feb 10, 5:55 PM CST	Tornado Warning	MOB	Choctaw, Washington	65 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2013 Every severe thunderstorm warning in 2013

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.