Alert archive / Alabama / Areal Flood Advisories in 2011
Areal Flood Advisory 39, NWS Mobile, AL
NWS Mobile, AL issued this areal flood advisory at Aug 4, 2011, 6:11 PM CDT for Choctaw County, Alabama. It was in force for 64 min.
The area
The counties it named.
The facts
- Issued
- Aug 4, 2011, 6:11 PM CDT (23:11 UTC)
- Expired
- Aug 4, 2011, 7:15 PM CDT
- In force
- 64 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Choctaw County, AL
The radar
The Mobile radar (KMOB), 149 km from the middle of the area, began a volume at 23:11 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
Jackson, MS (KJAN), launched 12:00Z, 11.2 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.
- Mixed-layer CAPE
- 2002 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 1118 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -101 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Mobile, AL wrote its last area forecast discussion before this areal flood advisory went out at Aug 4, 3:40 PM CDT, 2 hours 31 minutes earlier.
Area forecast discussion, Aug 4, 3:40 PM CDT, 2 hours 31 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, Aug 4, 5:40 AM CDT, 12 hours 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOBILE AL 540 AM CDT THU AUG 4 2011 ALZ051>064-FLZ001>006-GMZ630-650-655-670-675-MSZ067-075-076-078- 079-051200- CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW- ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE- LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA- COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-MOBILE BAY- COASTAL WATERS FROM PENSACOLA FL TO PASCAGOULA MS OUT 20 NM- COASTAL WATERS FROM DESTIN TO PENSACOLA FL OUT 20 NM- WATERS FROM PENSACOLA FL TO PASCAGOULA MS FROM 20 TO 60 NM- WATERS FROM DESTIN TO PENSACOLA FL FROM 20 TO 60 NM-WAYNE-PERRY- GREENE-STONE-GEORGE- 540 AM CDT THU AUG 4 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF INTERIOR SOUTHEAST MISSISSIPPI...SOUTHWEST AND SOUTH CENTRAL ALABAMA...THE WESTERN FLORIDA PANHANDLE AND THE ADJACENT GULF COASTAL WATERS OF ALABAMA AND NORTHWEST FLORIDA. .DAY ONE...TODAY AND TONIGHT AN EXCESSIVE HEAT WARNING IS IN EFFECT AGAIN TODAY FOR THE ENTIRE FORECAST AREA AS AFTERNOON HEAT INDICES ARE EXPECTED TO ONCE AGAIN RISE INTO THE 110 TO 115 DEGREE RANGE. REMEMBER...HEAT INDICES ARE DEVISED FOR SHADY...LIGHT WIND AREAS. EXPOSURE TO FULL SUNSHINE CAN INCREASE HEAT INDICES BY AS MUCH AS 15 DEGREES. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH THE RISK OF HEAT RELATED ILLNESSES IS SUBSTANTIALLY INCREASED...INCLUDING HEAT EXHAUSTION...CRAMPS...OR IN EXTREME CASES...DEADLY HEAT STROKE. EVERYONE IS ENCOURAGED TO PRACTICE THEIR HOT WEATHER SAFETY TIPS. LITTLE RELIEF FROM THE HEAT IS EXPECTED DURING THE NIGHTTIME HOURS WITH HEAT INDICES REMAINING IN THE 90S THROUGH THE EVENING WITH LOWS ONLY DROPPING INTO THE MID TO UPPER 70S. SLIGHTLY MORE COVERAGE OF SHOWERS AND THUNDERSTORMS THIS AFTERNOON IS EXPECTED ACROSS THE AREA TODAY AS OUTFLOW BOUNDARIES FROM EARLY MORNING STORMS TO THE NORTH OF THE AREA INTERACT WITH AN INCREASINGLY UNSTABLE AIRMASS TODAY. THERE IS A MODERATE CHANCE WET MICROBURSTS TODAY WITH THE STORMS...AND STRONG GUSTY WINDS...BRIEF HEAVY RAINFALL AND FREQUENT DANGEROUS CLOUD TO GROUND LIGHTNING STRIKES CAN BE EXPECTED WITH ANY OF THE STORMS. A FEW SEVERE STORMS WILL BE POSSIBLE. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY EXCESSIVE HEAT IS EXPECTED TO CONTINUE FOR THE REMAINDER OF THE WEEK...WITH AFTERNOON HEAT INDICES RISING TO THE 110 TO 115 DEGREE RANGE THROUGH AT LEAST SATURDAY...THEN LIKELY IN THE 105 TO 110 DEGREE RANGE ON SUNDAY. EVERYONE IS ENCOURAGED TO PRACTICE THEIR HOT WEATHER SAFETY TIPS. LITTLE RELIEF FROM THE HEAT IS EXPECTED DURING THE NIGHTTIME HOURS WITH HEAT INDICES REMAINING IN THE 90S THROUGH THE EVENING WITH LOWS ONLY DROPPING INTO THE MID TO UPPER 70S. ANY RELIEF THAT DOES COME WILL BE BY WAY OF SCATTERED SHOWERS AND THUNDERSTORMS. LOCALLY HEAVY DOWNPOURS AND FREQUENT LIGHTNING ARE POSSIBLE WITH THE STRONGER STORMS. A FEW MAY BECOME STRONG TO SEVERE. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF SKYWARN SEVERE STORM SPOTTER NETWORKS IS NOT EXPECTED THROUGH WEDNESDAY.
In the hours before
Special weather statement, Aug 4, 3:20 PM CDT, 2 hours 51 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, Aug 4, 3:40 PM CDT, 2 hours 31 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, Aug 4, 4:52 PM CDT, 1 hour 19 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, Aug 4, 5:33 PM CDT, 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>The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 2:26 PM CDT | Excessive Heat Watch | MOB | Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more | 23 hr |
| Aug 4, 2:26 PM CDT | Excessive Heat Warning | MOB | Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more | 28 hr |
Nearby
Areal Flood Advisories in Alabama, 2011Every areal flood advisory in 2011
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.