Alert archive / South Dakota / Winter Storm Watches in 2011
Winter Storm Watch 2, NWS Aberdeen, SD
NWS Aberdeen, SD issued this winter storm watch at Mar 22, 2011, 3:59 AM CDT for 4 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It took effect at Mar 22, 2011, 10:00 PM CDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Mar 22, 2011, 3:59 AM CDT (08:59 UTC)
- In effect from
- Mar 22, 2011, 10:00 PM CDT
- Expired
- Mar 22, 2011, 10:34 AM CDT
- In force
- Issued by
- NWS Aberdeen, SD
Counties Big Stone County, MN, Traverse County, MN, Day County, SD, Grant County, SD, Marshall County, SD, Roberts County, SD
The radar
The Aberdeen radar (KABR), 113 km from the middle of the area, began a volume at 09:03 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 00:00Z, 9.0 hours before the alert went out and 132 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1334 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 353 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm watch 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 winter storm watch went out at Mar 22, 3:59 AM CDT, 0 minutes earlier.
Area forecast discussion, Mar 22, 3:59 AM CDT, 0 minutes before
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</html>Hazardous weather outlook, Mar 21, 7:26 AM CDT, 20 hours 33 minutes before
HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE ABERDEEN SD 726 AM CDT MON MAR 21 2011 SDZ003>005-009-010-015>017-033>037-045-048-051-221230- CORSON-CAMPBELL-MCPHERSON-WALWORTH-EDMUNDS-DEWEY-POTTER-FAULK- STANLEY-SULLY-HUGHES-HYDE-HAND-JONES-LYMAN-BUFFALO- 726 AM CDT MON MAR 21 2011 /626 AM MDT MON MAR 21 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL SOUTH DAKOTA AND NORTH CENTRAL SOUTH DAKOTA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY PRECIPITATION AHEAD OF A DEVELOPING STORM SYSTEM WILL BEGIN TO REACH THE REGION LATE MONDAY NIGHT/TUESDAY MORNING...WITH WIDESPREAD SHOWER AND THUNDERSTORM ACTIVITY. THUNDERSTORMS ARE NOT EXPECTED TO BE SEVERE...HOWEVER RAINFALL DURING THE DAY TUESDAY COULD EXACERBATE ANY ONGOING FLOOD ISSUES. PRECIPITATION WILL CHANGE OVER TO SNOW STARTING AT THE NORTH DAKOTA BORDER DURING MID DAY TUESDAY...PROGRESSING SOUTH THROUGH THE AFTERNOON AND EVENING...WITH THE ENTIRE CWA UNDER A COLD ENOUGH AIRMASS FOR ACCUMULATING SNOW BY WEDNESDAY MORNING. IMPROVING CONDITIONS EXPECTED LATE WEDNESDAY INTO EARLY THURSDAY...HOWEVER LOCATIONS IN THE NORTHERN SISSETON HILLS/WEST CENTRAL MINNESOTA COULD SEE AS MUCH AS 4" OF SNOW. LOWER AMOUNTS ARE EXPECTED ELSEWHERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. MNZ039-046-SDZ006>008-011-018>023-221230- TRAVERSE-BIG STONE-BROWN-MARSHALL-ROBERTS-DAY-SPINK-CLARK- CODINGTON-GRANT-HAMLIN-DEUEL- 726 AM CDT MON MAR 21 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL MINNESOTA AND NORTHEAST SOUTH DAKOTA. .DAY ONE...TODAY AND TONIGHT MORNING FOG IS EXPECTED FOR LOCATIONS LOCATED IN THE JAMES VALLEY AND SISSETON HILLS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY PRECIPITATION AHEAD OF A DEVELOPING STORM SYSTEM WILL BEGIN TO REACH THE REGION LATE MONDAY NIGHT/TUESDAY MORNING...WITH WIDESPREAD SHOWER AND THUNDERSTORM ACTIVITY. THUNDERSTORMS ARE NOT EXPECTED TO BE SEVERE...HOWEVER RAINFALL DURING THE DAY TUESDAY COULD EXACERBATE ANY ONGOING FLOOD ISSUES. PRECIPITATION WILL CHANGE OVER TO SNOW STARTING AT THE NORTH DAKOTA BORDER DURING MID DAY TUESDAY...PROGRESSING SOUTH THROUGH THE AFTERNOON AND EVENING...WITH THE ENTIRE CWA UNDER A COLD ENOUGH AIRMASS FOR ACCUMULATING SNOW BY WEDNESDAY MORNING. IMPROVING CONDITIONS EXPECTED LATE WEDNESDAY INTO EARLY THURSDAY...HOWEVER LOCATIONS IN THE NORTHERN SISSETON HILLS/WEST CENTRAL MINNESOTA COULD SEE AS MUCH AS 4" OF SNOW. LOWER AMOUNTS ARE EXPECTED ELSEWHERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. CONNELLY
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 9:28 PM CDT | River Flood Warning | ABR | Brown | 242 days |
| Mar 21, 10:35 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand | 25 min |
| Mar 21, 11:56 PM CDT | River Flood Warning | ABR | Codington | 57 hr |
| Mar 22, 9:59 AM CDT | Areal Flood Warning | ABR | Clark, Hamlin | 6 days |
| Mar 22, 10:34 AM CDT | Winter Storm Warning | ABR | Brown, Clark, Codington, Day, Deuel, Grant and 4 more | 28 hr |
| Mar 22, 10:34 AM CDT | Winter Weather Advisory | ABR | Campbell, Corson, Dewey, Edmunds, Faulk, McPherson and 2 more | 28 hr |
| Mar 22, 12:32 PM CDT | River Flood Warning | ABR | Brown | 46 hr |
| Mar 22, 2:50 PM CDT | Areal Flood Warning | ABR | Spink | 24 hr |
Nearby
Winter Storm Watches in South Dakota, 2011Winter Storm Watches in Minnesota, 2011Every winter storm watch 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.