Alert archive / South Dakota / Heat Advisories in 2011
Heat Advisory 2, NWS Aberdeen, SD
NWS Aberdeen, SD issued this heat advisory at Jul 30, 2011, 3:56 PM CDT for 26 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It took effect at Jul 31, 2011, 12:00 PM CDT. It was in force for 34 hr.
The area
The counties it named.
The facts
- Issued
- Jul 30, 2011, 3:56 PM CDT (20:56 UTC)
- In effect from
- Jul 31, 2011, 12:00 PM CDT
- Expired
- Aug 1, 2011, 9:51 PM CDT
- In force
- 34 hr
- Issued by
- NWS Aberdeen, SD
All 28 counties
Big Stone County, MN, Traverse County, MN, Brown County, SD, Buffalo County, SD, Campbell County, SD, Clark County, SD, Codington County, SD, Corson County, SD, Day County, SD, Deuel County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jones County, SD, Lyman County, SD, Marshall County, SD, McPherson County, SD, Potter County, SD, Roberts County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 56 km from the middle of the area, began a volume at 20:58 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
Aberdeen, SD (KABR), launched 12:00Z, 8.9 hours before the alert went out and 34 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
- 2567 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 1142 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 8.7
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Aberdeen, SD wrote its last area forecast discussion before this heat advisory went out at Jul 30, 3:52 PM CDT, 4 minutes earlier.
Area forecast discussion, Jul 30, 3:52 PM CDT, 4 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, Jul 30, 3:51 AM CDT, 12 hours 5 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ABERDEEN SD 351 AM CDT SAT JUL 30 2011 MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-310900- TRAVERSE-BIG STONE-CORSON-CAMPBELL-MCPHERSON-BROWN-MARSHALL- ROBERTS-WALWORTH-EDMUNDS-DAY-DEWEY-POTTER-FAULK-SPINK-CLARK- CODINGTON-GRANT-HAMLIN-DEUEL-STANLEY-SULLY-HUGHES-HYDE-HAND-JONES- LYMAN-BUFFALO- 351 AM CDT SAT JUL 30 2011 /251 AM MDT SAT JUL 30 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL MINNESOTA...CENTRAL SOUTH DAKOTA...NORTH CENTRAL SOUTH DAKOTA AND NORTHEAST SOUTH DAKOTA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON AND EVENING AS A FRONTAL BOUNDARY DROPS INTO THE AREA. SEVERE STORMS ARE POSSIBLE ACROSS EASTERN SOUTH DAKOTA AND WESTERN MINNESOTA WITH LARGE HAIL AND STRONG WINDS. HEAT INDEX VALUES WILL APPROACH 100 DEGREES THIS AFTERNOON ALONG AND WEST OF THE JAMES VALLEY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ON AND OFF CHANCES FOR THUNDERSTORMS ARE IN THE FORECAST THROUGH THE PERIOD. HOT AND HUMID CONDITIONS ARE EXPECTED SUNDAY AND MONDAY WITH HEAT INDICES SURPASSING 100 DEGREES ACROSS PORTIONS OF THE AREA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY LATE THIS AFTERNOON AND EVENING ACROSS NORTHEASTERN SOUTH DAKOTA AND WEST CENTRAL MINNESOTA. TMT
In the hours before
Local storm report, Jul 30, 10:47 AM CDT, 5 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1047 AM CDT SAT JUL 30 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1110 PM TSTM WND GST 6 NNW TOLSTOY 45.29N 99.66W
07/29/2011 E60 MPH EDMUNDS SD PUBLIC
LUMBER MOVED AROUND. CONCRETE PLANTER KNOCKED OVER AND
ROLLED AROUND. BRANCHES DOWN
1159 PM TSTM WND GST 9 SE IPSWICH 45.35N 98.90W
07/29/2011 E60 MPH EDMUNDS SD PUBLIC
TREE BRANCHES DOWN. 3 INCH DIAMTER BRANCHES.
1220 AM TSTM WND GST 6 SW MINA 45.38N 98.84W
07/30/2011 E60 MPH EDMUNDS SD PUBLIC
&&
KGILLESpecial weather statement, Jul 30, 10:54 AM CDT, 5 hours 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 1054 AM CDT SAT JUL 30 2011 MNZ039-046-SDZ008-301630- BIG STONE-ROBERTS-TRAVERSE- 1054 AM CDT SAT JUL 30 2011 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR NORTHEASTERN ROBERTS...NORTHWESTERN BIG STONE AND TRAVERSE COUNTIES UNTIL 1130 AM CDT... AT 1048 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 9 MILES EAST OF HANKINSON...OR 20 MILES NORTHWEST OF WHEATON...MOVING SOUTHEAST AT 30 MPH. A FEW LOCATIONS IN THE ADVISORY INCLUDE VICTOR...ROSHOLT...WHITE ROCK...TINTAH...WHEATON AND CHARLESVILLE. PENNY TO NICKEL SIZE HAIL...AND WINDS AROUND 40 TO 50 MPH ARE POSSIBLE WITH THIS STORM. PRECAUTIONARY/PREPAREDNESS ACTIONS... && MOHR
Local storm report, Jul 30, 11:43 AM CDT, 4 hours 13 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, Jul 30, 1:08 PM CDT, 2 hours 48 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 Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 8:34 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 15 min |
| Jul 29, 8:58 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 47 min |
| Jul 29, 9:43 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 47 min |
| Jul 29, 10:50 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Potter, Walworth | 25 min |
| Jul 29, 11:12 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk, Potter | 48 min |
| Jul 29, 11:43 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk, McPherson | 32 min |
| Jul 30, 12:15 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds | 22 min |
| Jul 30, 11:06 AM CDT | Severe Thunderstorm Warning | ABR | Roberts | 39 min |
Nearby
Heat Advisories in South Dakota, 2011Heat Advisories in Minnesota, 2011Every heat 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.