Alert archive / Alabama / Special Weather Statements in 2020

Special Weather Statement, NWS Birmingham, AL

March 4, 2020Perry County, Alabama

NWS Birmingham, AL issued this special weather statement at Mar 4, 2020, 3:49 AM CST for Perry County, Alabama. It was in force for 41 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 4, 2020, 3:49 AM CST (09:49 UTC)
Expired: Mar 4, 2020, 4:30 AM CST
In force: 41 min
Issued by: NWS Birmingham, AL

County Perry County, AL

The radar

The Birmingham radar (KBMX), 69 km from the middle of the area, began a volume at 09:51 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, 9.8 hours before the alert went out and 69 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: 40 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 968 m above ground
0-6 km bulk shear: 82 kt
0-1 km storm-relative helicity: -79 m²/s²
0-3 km storm-relative helicity: -30 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -1.1

Open this sounding in Storm Lab

The text

As transmitted.

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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 4, 3:03 AM CST, 46 minutes earlier.

Area forecast discussion, Mar 4, 3:03 AM CST, 46 minutes before

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<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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Hazardous weather outlook, Mar 4, 2:14 AM CST, 1 hour 35 minutes before

Hazardous Weather Outlook
National Weather Service Birmingham AL
214 AM CST Wed Mar 4 2020

ALZ011>015-017>050-051115-
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee-
Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega-
Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa-
Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon-
Bullock-Lee-Russell-Pike-Barbour-
214 AM CST Wed Mar 4 2020

This Hazardous Weather Outlook is for the counties served by the
National Weather Service office in Birmingham.

.DAY ONE...Today and Tonight.

Severe storms are possible through 10 AM today along and south of a
line from Eutaw to Clanton to Lafayette. These storms could produce
damaging winds up to 60 mph and quarter size hail.

Periods of moderate to heavy rainfall are likely this morning through
Thursday morning. This could cause flash flooding or areal flooding
for areas along and south of a line from Eutaw to Clanton to
Lafayette.

Areas of fog may reduce visibility to below one mile through 6 AM.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Due to recent and expected rainfall, rises are expected along area
rivers. A portion of the Black Warrior river basin is forecast to go
into minor flood Wednesday, and a portion of the Tallapoosa River is
forecast to rise above flood stage on Thursday. River flooding may
continue into early next week. Please refer to the latest river
statements for details.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management may be needed
this morning through Thursday morning.

In the hours before

Special weather statement, Mar 4, 3:49 AM CST, 0 minutes before

Special Weather Statement
National Weather Service Birmingham AL
349 AM CST Wed Mar 4 2020

ALZ032-033-041030-
Hale AL-Perry AL-
349 AM CST Wed Mar 4 2020

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL PERRY AND SOUTHEASTERN
HALE COUNTIES UNTIL 430 AM CST...

At 349 AM CST, Doppler radar was tracking a strong thunderstorm near
Newbern, or near Greensboro, moving east at 55 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Marion, Greensboro, Newbern, Greensboro Municipal Airport, Vaiden,
Suttle, Judson College, Radford, Sprott, Cedarville, Laneville and
Folsom.

LAT...LON 3277 8702 3273 8702 3269 8703 3266 8703
      3264 8705 3260 8704 3257 8708 3254 8708
      3251 8710 3251 8767 3269 8769
TIME...MOT...LOC 0949Z 265DEG 47KT 3261 8759

87/GRANTHAM

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 3, 10:19 PM CST	Dense Fog Advisory	BMX	Autauga, Bibb, Bullock, Chambers, Chilton, Clay and 17 more	6 hr
Mar 4, 2:33 AM CST	Severe Thunderstorm Warning	BMX	Greene, Sumter	57 min
Mar 4, 4:20 AM CST	Severe Thunderstorm Warning	BMX	Sumter	40 min
Mar 4, 5:32 AM CST	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	58 min
Mar 4, 6:19 AM CST	Special Weather Statement	BMX	Lowndes	41 min
Mar 4, 6:23 AM CST	Special Weather Statement	BMX	Bullock	52 min
Mar 4, 6:42 AM CST	Severe Thunderstorm Warning	BMX	Barbour, Bullock, Pike	48 min
Mar 4, 6:52 AM CST	Severe Thunderstorm Warning	BMX	Barbour, Bullock, Pike	38 min
Mar 4, 7:27 AM CST	Severe Thunderstorm Warning	BMX	Barbour	26 min
Mar 4, 8:49 AM CST	River Flood Warning	BMX	Autauga, Dallas, Elmore, Lowndes, Montgomery	6 days
Mar 4, 9:04 AM CST	River Flood Warning	BMX	Montgomery	71 hr
Mar 4, 9:39 AM CST	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	7 days
Mar 4, 1:28 PM CST	Special Weather Statement	BMX	Dallas	32 min
Mar 4, 1:40 PM CST	Special Weather Statement	BMX	Autauga	35 min
Mar 4, 2:14 PM CST	Special Weather Statement	BMX	Elmore	46 min
Mar 4, 3:08 PM CST	Areal Flood Advisory	BMX	Montgomery	3 hr
Mar 4, 3:15 PM CST	River Flood Warning	BMX	Bibb, Dallas, Perry	53 hr
Mar 4, 3:38 PM CST	River Flood Warning	BMX	Autauga, Dallas, Lowndes	6 days
Mar 4, 3:38 PM CST	River Flood Warning	BMX	Dallas	7 days
Mar 4, 4:00 PM CST	Areal Flood Advisory	BMX	Bullock, Macon, Montgomery, Pike	3 hr

Nearby

Special Weather Statements in Alabama, 2020 Every special weather statement in 2020

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.