Alert archive / Nebraska / Winter Storm Warnings in 2020

Winter Storm Warning 1, NWS Omaha, NE

January 10, 20205 counties in Nebraska; Fremont County, Montgomery County, Page County, Iowa

NWS Omaha, NE issued this winter storm warning at Jan 10, 2020, 3:24 AM CST for 5 counties in Nebraska; Fremont County, Montgomery County, Page County, Iowa. It took effect at Jan 10, 2020, 9:00 AM CST. It was in force for 14 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
Jan 10, 2020, 3:24 AM CST (09:24 UTC)
In effect from
Jan 10, 2020, 9:00 AM CST
Expired
Jan 10, 2020, 10:36 PM CST
In force
14 hr
Issued by
NWS Omaha, NE

Counties Fremont County, IA, Montgomery County, IA, Page County, IA, Johnson County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE

The radar

The Omaha radar (KOAX), 102 km from the middle of the area, began a volume at 09:23 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 00:00Z, 9.4 hours before the alert went out and 102 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, Omaha, NE at 00:00Z on 2020-01-10Temperature 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, Omaha, NE at 00:00Z on 2020-01-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -33 square meters per square second.1939587897117Sfc1 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
1216 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
-33 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 9, 9:27 PM CSTWinter Weather AdvisoryOAXCass, Douglas, Gage, Jefferson, Johnson, Lancaster and 6 more23 hr

Nearby

Winter Storm Warnings in Nebraska, 2020Winter Storm Warnings in Iowa, 2020Every winter storm warning in 2020

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.