Alert archive / Alabama / Special Weather Statements in 2013

Special Weather Statement, NWS Birmingham, AL

March 23, 2013Marion County, Alabama

NWS Birmingham, AL issued this special weather statement at Mar 23, 2013, 2:54 AM CDT for Marion County, Alabama. It was in force for 51 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 23, 2013, 2:54 AM CDT (07:54 UTC)
Expired: Mar 23, 2013, 3:45 AM CDT
In force: 51 min
Issued by: NWS Birmingham, AL

County Marion County, AL

The radar

The Columbus AFB radar (KGWX), 51 km from the middle of the area, began a volume at 07:57 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 00:00Z, 7.9 hours before the alert went out and 174 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: 554 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 318 m²/s²
0-3 km storm-relative helicity: 425 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 23, 12:32 AM CDT, 2 hours 22 minutes earlier.

Area forecast discussion, Mar 23, 12:32 AM CDT, 2 hours 22 minutes before

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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, Mar 22, 9:29 PM CDT, 5 hours 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
929 PM CDT FRI MAR 22 2013

ALZ011>015-017>050-240230-
AUTAUGA-BARBOUR-BIBB-BLOUNT-BULLOCK-CALHOUN-CHAMBERS-CHEROKEE-
CHILTON-CLAY-CLEBURNE-COOSA-DALLAS-ELMORE-ETOWAH-FAYETTE-GREENE-HALE-
JEFFERSON-LAMAR-LEE-LOWNDES-MACON-MARENGO-MARION-MONTGOMERY-PERRY-
PICKENS-PIKE-RANDOLPH-RUSSELL-SHELBY-ST CLAIR-SUMTER-TALLADEGA-
TALLAPOOSA-TUSCALOOSA-WALKER-WINSTON-
929 PM CDT FRI MAR 22 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE IS A RISK OF SEVERE THUNDERSTORMS LATE SATURDAY AFTERNOON
INTO EARLY SUNDAY WITH DAMAGING WINDS AND LARGE HAIL POSSIBLE
ACROSS ALL OF CENTRAL ALABAMA. AN ISOLATED TORNADO THREAT MAY
DEVELOP LATE IN THE EVENING AND INTO THE OVERNIGHT HOURS GENERALLY
NEAR AND SOUTH OF A LINE FROM LIVINGSTON TO CLANTON TO AUBURN.

WINDY CONDITIONS ARE POSSIBLE SUNDAY AFTERNOON BEHIND THE EXITING
COLD FRONT. SUSTAINED WINDS AROUND 20 MPH WITH GUSTS OF 30
TO 40 MPH WILL BE POSSIBLE.

A MUCH COOLER AIR MASS WILL MOVE INTO THE REGION EARLY NEXT WEEK.
SUB FREEZING TEMPERATURES ARE POSSIBLE ON BOTH MONDAY AND TUESDAY
NIGHTS.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS AND EMERGENCY MANAGEMENT SHOULD START PLANNING FOR
POSSIBLE ACTIVATION BEGINNING SATURDAY AFTERNOON INTO EARLY SUNDAY
MORNING...DUE TO THE THREAT OF SEVERE WEATHER.

In the hours before

Special weather statement, Mar 23, 2:54 AM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
254 AM CDT SAT MAR 23 2013

ALZ011-230845-
MARION AL-
254 AM CDT SAT MAR 23 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MARION COUNTY UNTIL
345 AM CDT...

AT 254 AM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR FULTON...MOVING EAST AT 65 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 40 MPH HAVE
BEEN REPORTED WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  SHOTTSVILLE...
  PIGEYE...

&&

LAT...LON 3432 8813 3432 8803 3432 8788 3431 8788
      3423 8819 3432 8818 3433 8817 3433 8814
TIME...MOT...LOC 0754Z 250DEG 55KT 3430 8830

27

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 23, 5:22 AM CDT	Areal Flood Advisory	BMX	Lamar	3 hr
Mar 23, 5:34 AM CDT	Flash Flood Warning	BMX	Lamar	3 hr
Mar 23, 5:55 AM CDT	Special Weather Statement	BMX	Fayette, Pickens, Tuscaloosa	50 min
Mar 23, 6:47 AM CDT	Areal Flood Advisory	BMX	Jefferson	3 hr
Mar 23, 6:47 AM CDT	Special Weather Statement	BMX	Bibb, Chilton, Jefferson, Shelby	58 min
Mar 23, 6:51 AM CDT	Areal Flood Advisory	BMX	St. Clair	3 hr
Mar 23, 7:25 AM CDT	Special Weather Statement	BMX	Coosa	65 min
Mar 23, 7:54 AM CDT	Special Weather Statement	BMX	Tallapoosa	51 min
Mar 23, 3:36 PM CDT	Special Weather Statement	BMX	Pike	39 min
Mar 23, 4:03 PM CDT	Special Weather Statement	BMX	Barbour	42 min
Mar 23, 6:23 PM CDT	Severe Thunderstorm Warning	BMX	Sumter	52 min
Mar 23, 6:26 PM CDT	Special Weather Statement	BMX	Pickens	34 min
Mar 23, 6:58 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Marengo	62 min

Nearby

Special Weather Statements in Alabama, 2013 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.