Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 765, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Aug 6, 2011, 8:46 PM CDT for Boone County, Marion County, Arkansas. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 6, 2011, 8:46 PM CDT (01:46 UTC)
- Expired
- Aug 6, 2011, 9:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
Counties Boone County, AR, Marion County, AR
The radar
The Springfield radar (KSGF), 115 km from the middle of the area, began a volume at 01:47 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
Springfield, MO (KSGF), launched 00:00Z, 1.8 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.
- Mixed-layer CAPE
- 4106 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 1550 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.5
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 6, 6:16 PM CDT, 2 hours 30 minutes earlier.
Area forecast discussion, Aug 6, 6:16 PM CDT, 2 hours 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>Hazardous weather outlook, Aug 6, 5:00 AM CDT, 15 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LITTLE ROCK AR 500 AM CDT SAT AUG 6 2011 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-071000- ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND- CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING- INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE- MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE- PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE- WOODRUFF-YELL- 500 AM CDT SAT AUG 6 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS. .DAY ONE...TODAY AND TONIGHT VERY HOT CONDITIONS WILL CONTINUE TODAY. HIGH TEMPERATURES WILL RANGE FROM 100 TO 110 DEGREES IN MUCH OF ARKANSAS. THESE READINGS COMBINED WITH HIGH HUMIDITY LEVELS WILL CREATE DANGEROUS HEAT INDEX VALUES FROM 105 TO 115 DEGREES. A HEAT ADVISORY REMAINS IN EFFECT TODAY. PEOPLE NEED TO TAKE THE HEAT SERIOUSLY. HEAT IS THE NUMBER ONE WEATHER RELATED KILLER IN THE UNITED STATES. ANY THUNDERSTORMS THROUGH TONIGHT WILL BE ISOLATED...AND CONFINED TO AREAS NEAR THE MISSOURI BORDER. LITTLE TO NO RAIN IS EXPECTED ELSEWHERE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY HIGH PRESSURE IN THE SOUTHERN PLAINS HAS BEEN RESPONSIBLE FOR THE HEAT WAVE IN ARKANSAS. IT APPEARS THE HIGH WILL MOVE SLOWLY TOWARD THE SOUTHWEST UNITED STATES IN THE COMING DAYS. THIS WILL CREATE A NORTHWEST WIND FLOW ALOFT...WHICH WILL DRIVE A COLD FRONT INTO THE REGION BY TUESDAY. THE FRONT WILL LIKELY STALL. PRECEDING THE FRONT...ABOVE NORMAL TEMPERATURES ARE IN THE FORECAST WITH HEAT INDEX VALUES OVER 105 DEGREES. A HEAT ADVISORY HAS BEEN POSTED FOR MUCH OF ARKANSAS THROUGH MONDAY. ONCE THE FRONT ARRIVES...IT WILL NOT BE QUITE SO HOT. TEMPERATURES WILL BE CLOSER TO NORMAL WEDNESDAY THROUGH FRIDAY...ESPECIALLY IN NORTHERN AND EASTERN SECTIONS OF THE STATE AWAY FROM HIGH PRESSURE. SURROUNDING THE FRONT...THERE WILL BE SCATTERED SHOWERS AND THUNDERSTORMS. CHANCES FOR RAIN WILL BE HIGHEST IN THE NORTHEAST HALF OF THE STATE...OR IN AREAS NORTH OF THE FRONT. SOME STORMS COULD BE SEVERE...WITH DAMAGING WINDS POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. && VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND CLICK ON CENTRAL ARKANSAS. 46
In the hours before
Special weather statement, Aug 6, 6:20 PM CDT, 2 hours 26 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 Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 8:19 PM CDT | Severe Thunderstorm Warning | LZK | Boone, Marion | 26 min |
| Aug 6, 8:48 PM CDT | Severe Thunderstorm Warning | LZK | Fulton | 42 min |
| Aug 6, 9:15 PM CDT | Severe Thunderstorm Warning | LZK | Izard, Sharp | 25 min |
| Aug 7, 1:05 PM CDT | Special Weather Statement | LZK | Pulaski | 45 min |
| Aug 7, 1:07 PM CDT | Severe Thunderstorm Warning | LZK | Pulaski | 38 min |
| Aug 7, 1:10 PM CDT | Special Weather Statement | LZK | Saline | 30 min |
| Aug 7, 1:14 PM CDT | Special Weather Statement | LZK | Hot Spring | 46 min |
| Aug 7, 1:34 PM CDT | Severe Thunderstorm Warning | LZK | Pulaski | 41 min |
| Aug 7, 1:39 PM CDT | Severe Thunderstorm Warning | LZK | Pulaski, Saline | 36 min |
| Aug 7, 1:57 PM CDT | Severe Thunderstorm Warning | LZK | Lonoke, Pulaski | 48 min |
| Aug 7, 2:00 PM CDT | Special Weather Statement | LZK | Saline | 45 min |
| Aug 7, 2:03 PM CDT | Special Weather Statement | LZK | Hot Spring | 47 min |
| Aug 7, 2:05 PM CDT | Severe Thunderstorm Warning | LZK | Grant, Saline | 40 min |
| Aug 7, 2:16 PM CDT | Special Weather Statement | LZK | Lonoke | 44 min |
| Aug 7, 2:22 PM CDT | Severe Thunderstorm Warning | LZK | Lonoke | 53 min |
| Aug 7, 2:23 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Independence, Stone | 37 min |
| Aug 7, 2:30 PM CDT | Severe Thunderstorm Warning | LZK | Jefferson, Lonoke, Pulaski | 45 min |
| Aug 7, 2:57 PM CDT | Special Weather Statement | LZK | Pulaski | 43 min |
| Aug 7, 3:03 PM CDT | Severe Thunderstorm Warning | LZK | Grant, Jefferson, Saline | 16 min |
| Aug 7, 3:22 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Independence, Stone | 38 min |
| Aug 7, 3:32 PM CDT | Severe Thunderstorm Warning | LZK | Independence, Jackson | 28 min |
| Aug 7, 3:44 PM CDT | Special Weather Statement | LZK | Jefferson | 46 min |
| Aug 7, 3:59 PM CDT | Severe Thunderstorm Warning | LZK | Jackson, Woodruff | 46 min |
| Aug 7, 4:12 PM CDT | Severe Thunderstorm Warning | LZK | Desha, Drew, Lincoln | 48 min |
| Aug 7, 4:14 PM CDT | Severe Thunderstorm Warning | LZK | Arkansas, Jefferson | 34 min |
| Aug 7, 4:24 PM CDT | Severe Thunderstorm Warning | LZK | White, Woodruff | 31 min |
| Aug 7, 4:52 PM CDT | Special Weather Statement | LZK | Clark, Cleveland, Dallas, Lincoln | 43 min |
| Aug 7, 5:16 PM CDT | Severe Thunderstorm Warning | LZK | Woodruff | 29 min |
| Aug 7, 5:20 PM CDT | Severe Thunderstorm Warning | LZK | Bradley, Drew | 26 min |
| Aug 7, 5:28 PM CDT | Severe Thunderstorm Warning | LZK | Dallas | 32 min |
| Aug 7, 5:40 PM CDT | Severe Thunderstorm Warning | LZK | Montgomery, Polk | 50 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2011Every severe thunderstorm warning 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.