Alert archive / Nebraska / Winter Storm Warnings in 2018
Winter Storm Warning 4, NWS Omaha, NE
NWS Omaha, NE issued this winter storm warning at Mar 15, 2018, 3:45 PM CDT for Cedar County, Knox County, Nebraska. It took effect at Mar 16, 2018, 4:00 AM CDT. It was in force for 21 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 15, 2018, 3:45 PM CDT (20:45 UTC)
- In effect from
- Mar 16, 2018, 4:00 AM CDT
- Expired
- Mar 17, 2018, 1:00 AM CDT
- In force
- 21 hr
- Issued by
- NWS Omaha, NE
Counties Cedar County, NE, Knox County, NE
The radar
The Sioux Falls radar (KFSD), 128 km from the middle of the area, began a volume at 20:42 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 12:00Z, 8.8 hours before the alert went out and 262 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
- 2381 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 128 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 warning 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 winter storm warning went out at Mar 14, 6:40 PM CDT, 21 hours 5 minutes earlier.
Area forecast discussion, Mar 14, 6:40 PM CDT, 21 hours 5 minutes before
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</html>The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 15, 3:53 AM CDT | Winter Storm Watch | OAX | Cedar, Knox | 12 hr |
| Mar 15, 3:45 PM CDT | Winter Weather Advisory | OAX | Antelope, Pierce, Thurston, Wayne | 33 hr |
Nearby
Winter Storm Warnings in Nebraska, 2018Every winter storm warning in 2018
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.