Alert archive / Iowa / Winter Weather Advisories in 2017
Winter Weather Advisory 2, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this winter weather advisory at Jan 10, 2017, 4:18 AM CST for 9 counties in Iowa; 7 counties in Minnesota. It took effect at Jan 10, 2017, 5:00 AM CST. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Jan 10, 2017, 4:18 AM CST (10:18 UTC)
- In effect from
- Jan 10, 2017, 5:00 AM CST
- Expired
- Jan 10, 2017, 6:00 PM CST
- In force
- 13 hr
- Issued by
- NWS Sioux Falls, SD
Counties Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Ida County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Woodbury County, IA, Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN
The radar
The Sioux Falls radar (KFSD), 90 km from the middle of the area, began a volume at 10:19 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
Minneapolis, MN (KMPX), launched 00:00Z, 10.3 hours before the alert went out and 231 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
- 1021 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 442 m²/s²
- 0-3 km storm-relative helicity
- 761 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 weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sioux Falls, SD wrote its last area forecast discussion before this winter weather advisory went out at Jan 10, 4:10 AM CST, 8 minutes earlier.
Area forecast discussion, Jan 10, 4:10 AM CST, 8 minutes before
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</html>Hazardous weather outlook, Jan 9, 9:19 PM CST, 6 hours 59 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 919 PM CST MON JAN 9 2017 IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097- 098-NEZ013-014-SDZ038>040-050-052>071-110330- LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-CLAY IA-PLYMOUTH-CHEROKEE- BUENA VISTA-WOODBURY-IDA-LINCOLN MN-LYON MN-MURRAY-COTTONWOOD- NOBLES-JACKSON-PIPESTONE-ROCK-DIXON-DAKOTA-BEADLE-KINGSBURY- BROOKINGS-GREGORY-JERAULD-SANBORN-MINER-LAKE-MOODY-BRULE-AURORA- DAVISON-HANSON-MCCOOK-MINNEHAHA-CHARLES MIX-DOUGLAS-HUTCHINSON- TURNER-LINCOLN SD-BON HOMME-YANKTON-CLAY SD-UNION- 919 PM CST MON JAN 9 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST IOWA...WEST CENTRAL IOWA...SOUTHWEST MINNESOTA...NORTHEAST NEBRASKA...CENTRAL SOUTH DAKOTA...EAST CENTRAL SOUTH DAKOTA... SOUTH CENTRAL SOUTH DAKOTA AND SOUTHEAST SOUTH DAKOTA. .DAY ONE...TONIGHT LIGHT FREEZING RAIN MAY DEVELOP VERY LATE TONIGHT WITH MINIMAL ICE ACCUMULATION EXPECTED...THOUGH EVEN VERY LIGHT AMOUNTS COULD RESULT IN SLIPPERY CONDITIONS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY LIGHT FREEZING RAIN WILL QUICKLY TRANSITION TO SNOW ON TUESDAY MORNING...THEN TAPER OFF FROM WEST TO EAST THROUGH THE LATE MORNING AND EARLY AFTERNOON. SNOW AMOUNTS WILL RANGE FROM AROUND HALF AND INCH ALONG THE INTERSTATE 90 CORRIDOR TO NEAR 1 INCH ALONG HIGHWAY 14. LESS THAN HALF AN INCH IS EXPECTED SOUTH OF INTERSTATE 90. LATE WEEK...MUCH COLDER AIR AND BRISK WINDS WILL REVIVE THE RISK OF DANGEROUSLY COLD WIND CHILLS. THE COLDEST WINDS CHILLS ARE EXPECTED THURSDAY NIGHT AND FRIDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
Nearby
Winter Weather Advisories in Iowa, 2017Winter Weather Advisories in Minnesota, 2017Every winter weather advisory in 2017
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.