Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

March 30, 2012Autauga County, Alabama

NWS Birmingham, AL issued this special weather statement at Mar 30, 2012, 5:22 PM CDT for Autauga County, Alabama. It was in force for 38 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: Mar 30, 2012, 5:22 PM CDT (22:22 UTC)
Expired: Mar 30, 2012, 6:00 PM CDT
In force: 38 min
Issued by: NWS Birmingham, AL

County Autauga County, AL

The radar

The Birmingham radar (KBMX), 72 km from the middle of the area, began a volume at 22:21 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, 10.4 hours before the alert went out and 72 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: 36 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 1106 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Mar 30, 3:18 PM CDT, 2 hours 4 minutes earlier.

Area forecast discussion, Mar 30, 3:18 PM CDT, 2 hours 4 minutes before

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Hazardous weather outlook, Mar 30, 1:03 PM CDT, 4 hours 19 minutes before

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In the hours before

Local storm report, Mar 30, 2:15 PM CDT, 3 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
215 PM CDT FRI MAR 30 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0120 PM     TSTM WND DMG     4 NNE MONTGOMERY        32.41N 86.26W
03/30/2012                   MONTGOMERY         AL   EMERGENCY MNGR

            DAMAGE REPORTED TO THE ROOF OF THE CRUMP COMMUNITY
            CENTER. ADDITIONALLY, SOME TREE DAMAGE IN THE SAME AREA.

&&

KSUMRALL

Special weather statement, Mar 30, 2:44 PM CDT, 2 hours 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
244 PM CDT FRI MAR 30 2012

ALZ042-302030-
LOWNDES AL-
244 PM CDT FRI MAR 30 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN LOWNDES COUNTY UNTIL 330
PM CDT...

AT 239 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM 10 MILES SOUTH OF GORDONVILLE...OR 12 MILES SOUTHWEST OF
MOSSES...MOVING EAST AT 25 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  FORT DEPOSIT...
  HAYNEVILLE...
  BEECHWOOD...
  LOWNDES COUNTY AIRPORT...
  LOGAN...

&&

LAT...LON 3212 8688 3223 8642 3205 8641 3204 8639
      3199 8640 3195 8664 3196 8683
TIME...MOT...LOC 1944Z 258DEG 22KT 3204 8675

MA

Special weather statement, Mar 30, 5:22 PM CDT, 0 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
Mar 29, 7:30 PM CDT	Areal Flood Advisory	BMX	Etowah	2 hr
Mar 30, 2:44 PM CDT	Special Weather Statement	BMX	Lowndes	46 min
Mar 30, 6:10 PM CDT	Special Weather Statement	BMX	Autauga	35 min

Nearby

Special Weather Statements in Alabama, 2012 Every special weather statement in 2012

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.