Alert archive / Nebraska / Wind Chill Advisories in 2009
Wind Chill Advisory 2, NWS Omaha, NE
NWS Omaha, NE issued this wind chill advisory at Mar 10, 2009, 3:04 PM CDT for 4 counties in Nebraska. It took effect at Mar 11, 2009, 1:00 AM CDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Mar 10, 2009, 3:04 PM CDT (20:04 UTC)
- In effect from
- Mar 11, 2009, 1:00 AM CDT
- Expired
- Mar 11, 2009, 10:00 AM CDT
- In force
- 9 hr
- Issued by
- NWS Omaha, NE
Counties Antelope County, NE, Cedar County, NE, Knox County, NE, Pierce County, NE
The radar
The Sioux Falls radar (KFSD), 152 km from the middle of the area, began a volume at 20:07 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 12:00Z, 8.1 hours before the alert went out and 280 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
- 624 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Mar 10, 2:55 PM CDT, 9 minutes earlier.
Area forecast discussion, Mar 10, 2:55 PM CDT, 9 minutes before
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</html>Hazardous weather outlook, Mar 10, 11:05 AM CDT, 3 hours 59 minutes before
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</html>Nearby
Wind Chill Advisories in Nebraska, 2009Every wind chill advisory in 2009
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.