Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Huntsville, AL

March 9, 2017Colbert County, Alabama

NWS Huntsville, AL issued this special weather statement at Mar 9, 2017, 11:11 PM CST for Colbert County, Alabama. It was in force for 34 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 9, 2017, 11:11 PM CST (05:11 UTC)
Expired
Mar 9, 2017, 11:45 PM CST
In force
34 min
Issued by
NWS Huntsville, AL

County Colbert County, AL

The radar

The Columbus AFB radar (KGWX), 123 km from the middle of the area, began a volume at 05:15 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

Nashville Metro, TN (KBNA), launched 00:00Z, 5.2 hours before the alert went out and 172 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2017-03-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2017-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2824 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Huntsville, AL wrote its last area forecast discussion before this special weather statement went out at Mar 9, 9:00 PM CST, 2 hours 11 minutes earlier.

Area forecast discussion, Mar 9, 9:00 PM CST, 2 hours 11 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.
      </p>
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Hazardous weather outlook, Mar 9, 9:15 PM CST, 1 hour 56 minutes before
Hazardous Weather Outlook
National Weather Service Huntsville AL
915 PM CST Thu Mar 9 2017

ALZ001>010-016-TNZ076-096-097-101100-
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-De Kalb-Cullman-Moore-Lincoln-Franklin TN-
915 PM CST Thu Mar 9 2017

This Hazardous Weather Outlook is for north Alabama and portions of
southern middle Tennessee.

.DAY ONE...Tonight...

Strong to severe thunderstorms are possible later tonight. The
primary hazards will be damaging winds and large hail. The line of
strong to severe thunderstorms will arrive in southern middle
Tennessee and far northwest Alabama around 11 PM to 1 AM and then
track southeast across the remainder of north central and northeast
Alabama between 1 AM and 3 AM.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

Rain will begin to mix with snow Saturday night as colder air
arrives in the wake of a cold front. Precipitation is expected to
change over to all snow by sunrise Sunday morning. The best chances
for snow will be along and north of the Tennessee River and along
the Cumberland Plateau. There is still some uncertainty regarding
accumulations, but at this time only minor accumulations up to and
around an inch are possible, mainly in southern middle Tennessee.

.SPOTTER CALL TO ACTION STATEMENT...

Activation of storm spotters and emergency management personnel may
be requested later tonight.

In the hours before

Special weather statement, Mar 9, 5:57 PM CST, 5 hours 14 minutes before
Special Weather Statement
National Weather Service Huntsville AL
557 PM CST THU MAR 9 2017

ALZ002-003-100030-
Franklin AL-Colbert AL-
557 PM CST THU MAR 9 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN COLBERT AND FRANKLIN
COUNTIES UNTIL 630 PM CST...

At 557 PM CST, Doppler radar was tracking a strong thunderstorm near
Red Bay, moving northeast at 60 mph.

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

Locations impacted include...
Russellville, Red Bay, Littleville, Belgreen, Vina, Hodges, Posey
Loop, Atwood, Pleasant Ridge and Colbert Heights.

LAT...LON 3454 8815 3476 8786 3473 8782 3473 8778
      3455 8753 3450 8753 3431 8788 3432 8817
TIME...MOT...LOC 2357Z 237DEG 52KT 3445 8802

LN
Special weather statement, Mar 9, 8:26 PM CST, 2 hours 45 minutes before
Special Weather Statement
National Weather Service Huntsville AL
826 PM CST THU MAR 9 2017

ALZ003-004-100300-
Lawrence AL-Franklin AL-
826 PM CST THU MAR 9 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN FRANKLIN AND
SOUTHERN LAWRENCE COUNTIES UNTIL 900 PM CST...

At 826 PM CST, Doppler radar was tracking a strong thunderstorm over
Haleyville, moving northeast at 45 mph.

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

Locations impacted include...
Moulton, Speake, Bankhead National Forest and Wren.

LAT...LON 3458 8711 3430 8711 3431 8776
TIME...MOT...LOC 0226Z 242DEG 37KT 3425 8766

LN
Special weather statement, Mar 9, 10:11 PM CST, 1 hour before
Special Weather Statement
National Weather Service Huntsville AL
1011 PM CST THU MAR 9 2017

TNZ076-096-100445-
Moore TN-Lincoln TN-
1011 PM CST THU MAR 9 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MOORE AND NORTHERN
LINCOLN COUNTIES UNTIL 1045 PM CST...

At 1011 PM CST, Doppler radar was tracking a strong thunderstorm near
Petersburg, or 10 miles northwest of Fayetteville, moving northeast
at 55 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Lynchburg, Petersburg, Chestnut Ridge, Howell, Belleville, Booneville
and Boonshill.

LAT...LON 3541 8625 3539 8628 3538 8625 3537 8627
      3535 8624 3533 8626 3516 8676 3524 8683
      3526 8683 3525 8675 3531 8668 3533 8660
      3537 8659 3535 8654 3536 8649 3533 8646
      3532 8642 3535 8641 3536 8633 3541 8629
TIME...MOT...LOC 0411Z 242DEG 49KT 3528 8667

LN
Special weather statement, Mar 9, 11:11 PM CST, 0 minutes before
Special Weather Statement
National Weather Service Huntsville AL
1111 PM CST THU MAR 9 2017

ALZ001-002-100545-
Lauderdale AL-Colbert AL-
1111 PM CST THU MAR 9 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LAUDERDALE AND
CENTRAL COLBERT COUNTIES UNTIL 1145 PM CST...

At 1110 PM CST, Doppler radar was tracking a strong thunderstorm near
Cherokee, or 8 miles west of Tuscumbia, moving east at 40 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Florence, Muscle Shoals, Sheffield, Tuscumbia, Killen, Cherokee,
Leighton, St. Florian, Underwood-Petersville and Posey Loop.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Strong gusty winds will be capable of knocking down small tree limbs
along with other small unsecured items. Seek safe shelter until this
storm has passed.

&&

LAT...LON 3493 8739 3480 8740 3480 8743 3478 8743
      3477 8742 3474 8743 3472 8743 3471 8742
      3470 8745 3468 8745 3463 8800 3485 8801
TIME...MOT...LOC 0510Z 264DEG 36KT 3476 8786

RSB

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 9, 8:26 PM CSTSpecial Weather StatementHUNLawrence34 min
Mar 9, 11:33 PM CSTSpecial Weather StatementHUNLimestone27 min
Mar 9, 11:43 PM CSTSpecial Weather StatementHUNFranklin32 min
Mar 9, 11:50 PM CSTSevere Thunderstorm WarningHUNColbert, Lauderdale, Lawrence, Limestone, Madison55 min
Mar 9, 11:55 PM CSTSevere Thunderstorm WarningHUNJackson, Madison65 min
Mar 10, 12:27 AM CSTSevere Thunderstorm WarningHUNDeKalb, Jackson49 min
Mar 10, 12:34 AM CSTSpecial Weather StatementHUNMorgan26 min
Mar 10, 12:45 AM CSTSevere Thunderstorm WarningHUNMadison, Marshall, Morgan30 min
Mar 10, 12:47 AM CSTSevere Thunderstorm WarningHUNCullman, Morgan58 min
Mar 10, 12:52 AM CSTSpecial Weather StatementHUNLawrence23 min
Mar 10, 1:14 AM CSTSevere Thunderstorm WarningHUNCullman, DeKalb, Jackson, Marshall, Morgan36 min
Mar 10, 1:34 AM CSTSpecial Weather StatementHUNCullman11 min
Mar 10, 1:41 AM CSTSpecial Weather StatementHUNCullman34 min
Mar 10, 1:55 AM CSTSpecial Weather StatementHUNCullman35 min
Mar 10, 2:43 PM CSTFrost AdvisoryHUNColbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more16 hr
Mar 9, 10:11 PM CSTSpecial Weather StatementHUNMoore34 min
Mar 9, 11:30 PM CSTSevere Thunderstorm WarningHUNLincoln, Moore47 min
Mar 10, 2:43 PM CSTFreeze WarningHUNFranklin, Lincoln, Moore16 hr

Nearby

Special Weather Statements in Alabama, 2017Every special weather statement in 2017

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.