Alert archive / Alabama / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 252, NWS Birmingham, AL

May 16, 2009Marengo County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at May 16, 2009, 2:49 PM CDT for Marengo County, Alabama. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 16, 2009, 2:49 PM CDT (19:49 UTC)
Expired: May 16, 2009, 3:15 PM CDT
In force: 26 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Marengo County, AL

The radar

The Mobile radar (KMOB), 158 km from the middle of the area, began a volume at 19:52 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.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.8 hours before the alert went out and 161 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: 609 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 570 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 76 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.

000 
WUUS54 KBMX 161949
SVRBMX
ALC091-162015-
/O.NEW.KBMX.SV.W.0252.090516T1949Z-090516T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
249 PM CDT SAT MAY 16 2009

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL MARENGO COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 315 PM CDT

* AT 249 PM CDT...THE NATIONAL WEATHER SERVICE DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR SWEET
  WATER...OR 17 MILES SOUTH OF LINDEN...AND MOVING NORTHEAST AT 5
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SWEET WATER BY 310 PM CDT...
  WAYNE AND DIXONS MILL BY 315 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758.

LAT...LON 3218 8791 3207 8771 3199 8778 3199 8800
      3200 8801
TIME...MOT...LOC 1949Z 214DEG 5KT 3206 8787

$$

12/SIRMON

1 follow-up statement

000 
WWUS54 KBMX 162005
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
305 PM CDT SAT MAY 16 2009

ALC091-162015-
/O.CON.KBMX.SV.W.0252.000000T0000Z-090516T2015Z/
MARENGO AL-
305 PM CDT SAT MAY 16 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR SOUTH CENTRAL MARENGO COUNTY...

AT 305 PM CDT...NATIONAL WEATHER SERVICE CONTINUED TO DETECT A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR SWEET
WATER...OR 16 MILES SOUTH OF LINDEN...MOVING NORTHEAST AT 5 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  WAYNE BY 315 PM CDT...

TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.

LAT...LON 3218 8791 3207 8771 3199 8778 3199 8800
      3200 8801
TIME...MOT...LOC 2006Z 214DEG 5KT 3208 8785

$$

12/SIRMON

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 8:56 PM CDT	Areal Flood Advisory	BMX	Lee, Russell, Tallapoosa	3 hr
May 15, 10:58 PM CDT	Areal Flood Advisory	BMX	Cleburne	3 hr
May 15, 11:14 PM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	3 hr
May 16, 9:54 AM CDT	Flash Flood Watch	BMX	Barbour, Bibb, Blount, Bullock, Calhoun, Chambers and 25 more	33 hr
May 16, 9:58 AM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	3 hr
May 16, 10:15 AM CDT	Flash Flood Warning	BMX	Randolph	4 hr
May 16, 11:57 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Perry	48 min
May 16, 12:20 PM CDT	Areal Flood Advisory	BMX	Chambers	3 hr
May 16, 12:39 PM CDT	Severe Thunderstorm Warning	BMX	Perry	26 min
May 16, 1:48 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar	42 min
May 16, 2:05 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	40 min
May 16, 3:31 PM CDT	Areal Flood Advisory	BMX	Marengo	3 hr
May 16, 4:37 PM CDT	Severe Thunderstorm Warning	BMX	Winston	23 min
May 16, 5:07 PM CDT	Severe Thunderstorm Warning	BMX	Montgomery	38 min
May 16, 5:43 PM CDT	Areal Flood Advisory	BMX	Barbour	3 hr
May 16, 6:14 PM CDT	Severe Thunderstorm Warning	BMX	Russell	31 min
May 16, 6:23 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson	37 min
May 16, 6:43 PM CDT	Areal Flood Advisory	BMX	Pike	3 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; radar from the NEXRAD Level II archive.