Alert archive / Alabama / Flash Flood Warnings in 2010

Flash Flood Warning 59, NWS Huntsville, AL

November 30, 2010Cullman County, Alabama

NWS Huntsville, AL issued this flash flood warning at Nov 30, 2010, 5:37 AM CST for Cullman County, Alabama. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 30, 2010, 5:37 AM CST (11:37 UTC)
Expired: Nov 30, 2010, 8:00 AM CST
In force: 2 hr
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Flood severity: None

County Cullman County, AL

The radar

The Birmingham radar (KBMX), 107 km from the middle of the area, began a volume at 11:38 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, 11.6 hours before the alert went out and 106 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: 517 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 540 m²/s²
0-3 km storm-relative helicity: 634 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning 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 flash flood warning went out at Nov 30, 4:44 AM CST, 53 minutes earlier.

Area forecast discussion, Nov 30, 4:44 AM CST, 53 minutes before

<!doctype html>
<html lang="en">
<head>
  <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Nov 30, 5:24 AM CST, 13 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HUNTSVILLE AL
524 AM CST TUE NOV 30 2010

ALZ001>010-016-TNZ076-096-097-301900-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
524 AM CST TUE NOV 30 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS
OF SOUTHERN MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT...

A BROKEN LINE OF STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE SLOWLY
MOVING EASTWARD THIS MORNING. THE MAIN LINE OF THUNDERSTORMS WILL
PUSH INTO NORTHEAST ALABAMA BY 7 AM...AND INTO NORTH GEORGIA BY 9 AM.
THE PRIMARY THREAT WILL CONTINUE TO BE DAMAGING WINDS AND HEAVY RAIN.
A FEW TORNADOES ARE STILL POSSIBLE...MAINLY SOUTH OF THE TENNESSEE
RIVER.

SOME ADDITIONAL THUNDERSTORMS MAY PUSH INTO THE AREA SOUTH OF THE
TENNESSEE RIVER AFTER THE MAIN LINE OF STORMS MOVES THROUGH. THESE
STORMS WILL CONTINUE TO HAVE A DAMAGING WIND AND HEAVY RAIN
THREAT...BUT SHOULD DIMINISH BY 10 AM.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS
REQUESTED FOR NORTHEAST ALABAMA AND SOUTHERN MIDDLE TENNESSEE.

BCC

In the hours before

Local storm report, Nov 30, 2:59 AM CST, 2 hours 38 minutes before

<!doctype html>
<html lang="en">
<head>
  <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Nov 30, 3:51 AM CST, 1 hour 46 minutes before

<!doctype html>
<html lang="en">
<head>
  <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Nov 30, 4:07 AM CST, 1 hour 30 minutes before

<!doctype html>
<html lang="en">
<head>
  <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Nov 30, 4:47 AM CST, 50 minutes before

<!doctype html>
<html lang="en">
<head>
  <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Nov 30, 5:22 AM CST, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
522 AM CST TUE NOV 30 2010

TNZ097-301145-
FRANKLIN-
522 AM CST TUE NOV 30 2010

...SIGNIFICANT WEATHER ADVISORY FOR FRANKLIN COUNTY UNTIL 545 AM
CST...

AT 520 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR JERICHO...OR 11 MILES SOUTH OF WINCHESTER...
MOVING EAST AT 35 MPH.

WINDS UP TO 40 MPH ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  COWAN.
  ANDERSON...SHERWOOD.
  SEWANEE.

THIS THUNDERSTORM COULD INTENSIFY QUICKLY...SO BE READY TO ACT IF A
WARNING IS ISSUED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 AM CST TUESDAY MORNING
FOR NORTHEASTERN ALABAMA AND CENTRAL TENNESSEE.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

&&

LAT...LON 3499 8587 3500 8621 3513 8621 3524 8590
TIME...MOT...LOC 1122Z 255DEG 30KT 3504 8611

Special weather statement, Nov 30, 5:34 AM CST, 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
534 AM CST TUE NOV 30 2010

ALZ009-301215-
JACKSON-
534 AM CST TUE NOV 30 2010

...SIGNIFICANT WEATHER ADVISORY FOR JACKSON COUNTY UNTIL 615 AM
CST...

AT 529 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR JERICHO...OR 16 MILES SOUTH OF WINCHESTER...
MOVING NORTHEAST AT 40 MPH.

WINDS UP TO 40 MPH AND HEAVY DOWNPOURS ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  RUSSELL CAVE NATIONAL MONUMENT...BRIDGEPORT.
  LONG ISLAND.

THE GUSTY WINDS WILL BE CAPABLE OF KNOCKING DOWN SMALL TREES...TREE
LIMBS...AND POWERLINES. SEEK SAFE SHELTER UNTIL THE STORM HAS PASSED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 AM CST TUESDAY MORNING
FOR NORTHEASTERN ALABAMA AND CENTRAL TENNESSEE.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

&&

LAT...LON 3486 8559 3484 8561 3487 8616 3497 8616
      3500 8564 3499 8561 3486 8558
TIME...MOT...LOC 1134Z 230DEG 35KT 3499 8602

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 30, 12:17 AM CST	Special Weather Statement	HUN	Colbert, Franklin, Lauderdale	43 min
Nov 30, 12:43 AM CST	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lawrence	47 min
Nov 30, 12:59 AM CST	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	25 min
Nov 30, 1:20 AM CST	Severe Thunderstorm Warning	HUN	Lauderdale, Lawrence, Limestone	28 min
Nov 30, 1:46 AM CST	Severe Thunderstorm Warning	HUN	Lawrence, Limestone, Madison	44 min
Nov 30, 2:01 AM CST	Special Weather Statement	HUN	Morgan	44 min
Nov 30, 2:37 AM CST	Severe Thunderstorm Warning	HUN	Limestone, Madison, Morgan	38 min
Nov 30, 3:19 AM CST	Flash Flood Warning	HUN	Madison	5 hr
Nov 30, 3:51 AM CST	Special Weather Statement	HUN	Jackson	54 min
Nov 30, 4:07 AM CST	Special Weather Statement	HUN	Morgan	38 min
Nov 30, 4:17 AM CST	Flash Flood Warning	HUN	Morgan	5 hr
Nov 30, 4:26 AM CST	Severe Thunderstorm Warning	HUN	Cullman	49 min
Nov 30, 4:47 AM CST	Special Weather Statement	HUN	Madison	43 min
Nov 30, 5:34 AM CST	Special Weather Statement	HUN	Jackson	41 min
Nov 30, 6:00 AM CST	Special Weather Statement	HUN	Madison	45 min
Nov 30, 6:06 AM CST	Special Weather Statement	HUN	Cullman	39 min
Nov 30, 7:21 AM CST	Special Weather Statement	HUN	Jackson, Marshall	54 min
Nov 30, 7:46 AM CST	Special Weather Statement	HUN	Jackson	44 min
Nov 30, 7:54 AM CST	Special Weather Statement	HUN	DeKalb	66 min
Nov 30, 8:15 AM CST	Areal Flood Warning	HUN	Madison	6 hr
Nov 30, 8:33 AM CST	Severe Thunderstorm Warning	HUN	DeKalb	27 min
Nov 30, 9:00 AM CST	Severe Thunderstorm Warning	HUN	DeKalb	15 min
Nov 30, 9:55 AM CST	River Flood Warning	HUN	Madison	21 hr
Nov 30, 1:53 PM CST	River Flood Warning	HUN	Jackson, Madison, Marshall	64 hr
Nov 30, 2:20 PM CST	Areal Flood Warning	HUN	Madison	6 hr
Nov 30, 2:09 AM CST	Severe Thunderstorm Warning	HUN	Lincoln, Moore	51 min
Nov 30, 2:59 AM CST	Severe Thunderstorm Warning	HUN	Franklin, Lincoln, Moore	46 min
Nov 30, 5:22 AM CST	Special Weather Statement	HUN	Franklin	23 min
Nov 30, 6:50 AM CST	Special Weather Statement	HUN	Franklin	25 min

Nearby

Flash Flood Warnings in Alabama, 2010 Every flash flood warning in 2010

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.