Alert archive / Alabama / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 114, NWS Birmingham, AL

April 5, 2009Russell County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 5, 2009, 8:16 AM CDT for Russell County, Alabama. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 5, 2009, 8:16 AM CDT (13:16 UTC)
Expired: Apr 5, 2009, 8:45 AM CDT
In force: 29 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Russell County, AL

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.3 hours before the alert went out and 136 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: 1202 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Birmingham, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 5, 6:48 AM CDT, 1 hour 28 minutes earlier.

Area forecast discussion, Apr 5, 6:48 AM CDT, 1 hour 28 minutes before

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Hazardous weather outlook, Apr 5, 7:23 AM CDT, 53 minutes before

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In the hours before

Special weather statement, Apr 5, 5:08 AM CDT, 3 hours 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
508 AM CDT SUN APR 5 2009

ALZ032-033-039-040-051100-
DALLAS-HALE-MARENGO-PERRY-
508 AM CDT SUN APR 5 2009

...SIGNIFICANT WEATHER ALERT FOR DALLAS...HALE...MARENGO AND PERRY
COUNTIES UNTIL 600 AM CDT...

AT 506 AM CDT...THE NATIONAL WEATHER SERVICE IS TRACKING A STRONG
THUNDERSTORM NEAR DAYTON...OR 9 MILES NORTHEAST OF LINDEN...MOVING
EAST AT 40 MPH.

PEA SIZE HAIL AND WINDS UP TO 40 MPH ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  DAYTON.
  FAUNSDALE.
  UNIONTOWN.
  MARION JUNCTION.
  HAMBURG.
  SUTTLE.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

27

Local storm report, Apr 5, 7:15 AM CDT, 1 hour 1 minute before

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Special weather statement, Apr 5, 7:25 AM CDT, 51 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 5:32 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Dallas, Perry	28 min
Apr 5, 6:33 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Elmore, Montgomery	24 min
Apr 5, 8:43 AM CDT	Severe Thunderstorm Warning	BMX	Barbour, Russell	24 min
Apr 5, 3:16 PM CDT	Freeze Watch	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	23 hr
Apr 5, 3:16 PM CDT	Freeze Watch	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	47 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2009 Every severe thunderstorm warning in 2009

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.