Alert archive / Nebraska / Wind Chill Advisories in 2013

Wind Chill Advisory 8, NWS Omaha, NE

December 22, 201327 counties in Nebraska; 8 counties in Iowa

NWS Omaha, NE issued this wind chill advisory at Dec 22, 2013, 3:40 AM CST for 27 counties in Nebraska; 8 counties in Iowa. It took effect at Dec 23, 2013, 3:00 AM CST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Dec 22, 2013, 3:40 AM CST (09:40 UTC)
In effect from
Dec 23, 2013, 3:00 AM CST
Expired
Dec 23, 2013, 12:00 PM CST
In force
9 hr
Issued by
NWS Omaha, NE
All 35 counties

Fremont County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Shelby County, IA, Antelope County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Johnson County, NE, Knox County, NE, Lancaster County, NE, Madison County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Pierce County, NE, Platte County, NE, Richardson County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE

The radar

The Omaha radar (KOAX), 16 km from the middle of the area, began a volume at 09:39 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 9.7 hours before the alert went out and 342 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.

Skew-T log-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2013-12-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2013-12-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1380 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
-100 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Omaha, NE wrote its last area forecast discussion before this wind chill advisory went out at Dec 22, 2:36 AM CST, 1 hour 4 minutes earlier.

Area forecast discussion, Dec 22, 2:36 AM CST, 1 hour 4 minutes before
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Hazardous weather outlook, Dec 21, 4:10 PM CST, 11 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
410 PM CST SAT DEC 21 2013

IAZ043-055-056-069-079-NEZ011-012-015>018-030>034-042>045-050>053-
065>067-078-088-221215-
MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-KNOX-CEDAR-THURSTON-
ANTELOPE-PIERCE-WAYNE-BOONE-MADISON-STANTON-CUMING-BURT-PLATTE-
COLFAX-DODGE-WASHINGTON-BUTLER-SAUNDERS-DOUGLAS-SARPY-SEWARD-
LANCASTER-CASS-SALINE-JEFFERSON-
410 PM CST SAT DEC 21 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
IOWA...WEST CENTRAL IOWA...EAST CENTRAL NEBRASKA...NORTHEAST
NEBRASKA AND SOUTHEAST NEBRASKA.

.DAY ONE...TONIGHT AND SUNDAY

LIGHT SNOW MAY DEVELOP TONIGHT...MAINLY SOUTH OF A LINE FROM
COLUMBUS NEBRASKA TO ONAWA IOWA. THE BEST CHANCE FOR ACCUMULATING
SNOW WILL BE ALONG AND SOUTH OF INTERSTATE 80 WHERE AN INCH OR TWO
OF SNOW WILL BE POSSIBLE BY DAYBREAK SUNDAY. WINDS WILL ALSO
BECOME NORTH TO NORTHWEST AND INCREASE TO 15 TO 20 MPH WHICH MAY
REDUCE VISIBILITIES IN OPEN AREAS.

.DAYS TWO THROUGH SEVEN...SUNDAY NIGHT THROUGH FRIDAY

BITTER COLD WIND CHILLS FROM 15 TO 20 BELOW CAN BE EXPECTED MONDAY
MORNING IN NORTHEAST NEBRASKA AND NORTHWEST IOWA.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT OR SUNDAY.

IAZ080-090-091-NEZ068-089>093-221215-
MONTGOMERY-FREMONT-PAGE-OTOE-GAGE-JOHNSON-NEMAHA-PAWNEE-
RICHARDSON-
410 PM CST SAT DEC 21 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST IOWA
AND SOUTHEAST NEBRASKA.

.DAY ONE...TONIGHT AND SUNDAY

SNOW IS EXPECTED TO DEVELOP VERY LATE THIS AFTERNOON AND CONTINUE
TONIGHT. A PERIOD OF HEAVY SNOW IS LIKELY THIS EVENING. TOTAL
ACCUMULATIONS SHOULD RANGE FROM 3 TO 7 INCHES BY DAYBREAK SUNDAY.
WINDS WILL ALSO BECOME NORTH TO NORTHWEST AT 15 TO 20 MPH WHICH
MAY CREATE AREAS OF BLOWING AND DRIFTING SNOW IN OPEN AREAS.
A WINTER WEATHER ADVISORY HAS BEEN ISSUED FOR TONIGHT...WITH A
WINTER STORM WARNING IN EFFECT FOR RICHARDSON COUNTY. SNOW WILL
DIMINISH LATE TONIGHT WITH SOME FLURRIES EXPECTED THROUGH SUNDAY
MORNING.

.DAYS TWO THROUGH SEVEN...SUNDAY NIGHT THROUGH FRIDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT OR SUNDAY...BUT
SPOTTERS ARE ENCOURAGED TO REPORT SNOWFALL AMOUNTS IF POSSIBLE.

FOBERT

In the hours before

Local storm report, Dec 22, 1:42 AM CST, 1 hour 58 minutes before
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Nearby

Wind Chill Advisories in Nebraska, 2013Wind Chill Advisories in Iowa, 2013Every wind chill advisory in 2013

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.