Alert archive / Nebraska / Wind Chill Advisories in 2007

Wind Chill Advisory 4, NWS Omaha, NE

February 2, 200717 counties in Nebraska; 8 counties in Iowa

NWS Omaha, NE issued this wind chill advisory at Feb 2, 2007, 3:16 PM CST for 17 counties in Nebraska; 8 counties in Iowa. It took effect at Feb 2, 2007, 9:00 PM CST. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Feb 2, 2007, 3:16 PM CST (21:16 UTC)
In effect from: Feb 2, 2007, 9:00 PM CST
Expired: Feb 3, 2007, 10:00 AM CST
In force: 13 hr
Issued by: NWS Omaha, NE

All 25 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, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Knox County, NE, Madison County, NE, Pierce County, NE, Platte County, NE, Sarpy County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE

The radar

The Omaha radar (KOAX), 45 km from the middle of the area, began a volume at 21:17 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

Omaha, NE (KOAX), launched 12:00Z, 9.3 hours before the alert went out and 45 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1006 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 8 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 Feb 2, 2:15 PM CST, 1 hour 1 minute earlier.

Area forecast discussion, Feb 2, 2:15 PM CST, 1 hour 1 minute before

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Hazardous weather outlook, Feb 2, 5:00 AM CST, 10 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
500 AM CST FRI FEB 2 2007

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-030000-
ANTELOPE-BOONE-BURT-BUTLER-CASS-CEDAR-COLFAX-CUMING-DODGE-DOUGLAS-
FREMONT IA-GAGE-HARRISON IA-JEFFERSON-JOHNSON-KNOX-LANCASTER-MADISON-
MILLS IA-MONONA IA-MONTGOMERY IA-NEMAHA-OTOE-PAGE IA-PAWNEE-PIERCE-
PLATTE-POTTAWATTAMIE IA-RICHARDSON-SALINE-SARPY-SAUNDERS-SEWARD-
SHELBY IA-STANTON-THURSTON-WASHINGTON-WAYNE-
500 AM CST FRI FEB 2 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA
AND SOUTHWEST IOWA.

.DAY ONE...TODAY AND TONIGHT

COLD TEMPERATURES AND WEST OR NORTHWEST WINDS AT 10 TO 20 MPH WILL
PRODUCE WIND CHILL VALUES FROM 15 BELOW TO 25 BELOW ZERO THROUGH
MID MORNING. THE COLD WIND CHILLS ARE EXPECTED MAINLY ALONG AND
NORTH OF A LINE FROM DAVID CITY TO WAHOO TO OMAHA TO OAKLAND IOWA.

A REINFORCING SHOT OF VERY COLD AIR AND GUSTY WINDS WILL MOVE OVER
THE REGION THIS EVENING AND TONIGHT. SOME AREAS OF LIGHT SNOW MAY
ALSO OCCUR. WIND CHILLS MAY REACH 15 BELOW ZERO OR COLDER TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SEVERAL SURGES OF ARCTIC AIR WILL MOVE ACROSS THE OUTLOOK AREA
THROUGH EARLY NEXT WEEK. THIS WILL RESULT IN VERY COLD TEMPERATURES
THROUGH MUCH OF THE PERIOD...WITH NIGHTTIME LOWS IN THE SINGLE
DIGITS ABOVE AND BELOW ZERO. WIND CHILL VALUES FROM 10 BELOW TO
30 BELOW WILL BE COMMON DURING THE LATE NIGHT AND EARLY MORNING
HOURS...ESPECIALLY SATURDAY NIGHT AND SUNDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.

MILLER

Nearby

Wind Chill Advisories in Nebraska, 2007 Wind Chill Advisories in Iowa, 2007 Every wind chill advisory in 2007

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.