Alert archive / Kansas / Snow Squall Warnings in 2020

Snow Squall Warning 3, NWS Goodland, KS

February 25, 2020Greeley County, Sherman County, Wallace County, Kansas; Cheyenne County, Kit Carson County, Colorado

NWS Goodland, KS issued this snow squall warning at Feb 25, 2020, 9:10 AM MST for Greeley County, Sherman County, Wallace County, Kansas; Cheyenne County, Kit Carson County, Colorado. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Feb 25, 2020, 9:10 AM MST (16:10 UTC)
Expired: Feb 25, 2020, 10:00 AM MST
In force: 50 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon

Counties Cheyenne County, CO, Kit Carson County, CO, Greeley County, KS, Sherman County, KS, Wallace County, KS

The radar

The Goodland radar (KGLD), 55 km from the middle of the area, began a volume at 16:08 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

Denver, CO (KDNR), launched 12:00Z, 4.2 hours before the alert went out and 139 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: 1164 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -133 m²/s²
0-3 km storm-relative helicity: -131 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 snow squall warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Goodland, KS wrote its last area forecast discussion before this snow squall warning went out at Feb 25, 9:10 AM MST, 0 minutes earlier.

Area forecast discussion, Feb 25, 9:10 AM MST, 0 minutes before

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Hazardous weather outlook, Feb 25, 2:40 AM MST, 6 hours 30 minutes before

Hazardous Weather Outlook
National Weather Service Goodland KS
240 AM MST Tue Feb 25 2020

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-261300-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
240 AM MST Tue Feb 25 2020 /340 AM CST Tue Feb 25 2020/

This hazardous weather outlook is for extreme southwest Nebraska...
northwest Kansas and east central Colorado.

.DAY ONE...TODAY AND TONIGHT...

A Winter Weather Advisory is in effect for the entire Tri-State area
through 5 PM MST (6 PM CST).

Strong north winds will occur today. Wind gusts will range from 40
mph across the eastern portion of the area to 45 to 55 mph across the
west, highest along and west of the Colorado Kansas border. A few
gusts to 60 mph are possible.

Widespread snow is expected to move into the area from the north from
late morning through late this afternoon. Additional snowfall
accumulations of an inch or so are expected south of the interstate
with one to three inches along and north of the interstate.

The combination of widespread snow and wind gusts of 40 to 55 mph
will produce visibility reductions as low as one half mile at times.
A few locations could be a bit lower.

Motorists should be prepared for a combination of snowpacked
roadways, very strong north winds producing significant visibility
reductions in snow and blowing snow and plan some extra time to reach
their destination.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

Near critical fire weather conditions are possible Friday along and
west of the Colorado Kansas border.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed. We would appreciate snowfall
reports and significant reductions in visibility from blowing snow
via telephone and social media.

In the hours before

Local storm report, Feb 25, 8:11 AM MST, 59 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GOODLAND KS
811 AM MST TUE FEB 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0626 AM     SNOW             MCCOOK                  40.20N 100.62W
02/25/2020  E1.0 INCH        RED WILLOW         NE   LAW ENFORCEMENT

            DISPATCH REPORTING ROADS LIGHTLY COVERED AND
            WIND BLOWN IN MANY SPOTS. VISIBILITY NO
            BETTER THAN A MILE AT TIMES.

0605 AM     SNOW             NORTON                  39.84N 99.89W
02/25/2020  E1.5 INCH        NORTON             KS   LAW ENFORCEMENT

            DISPATCH IS ESTIMATING AROUND 1 TO 2 INCHES
            SO FAR. ROADS SLUSHY AND SNOW ONGOING.

0739 AM     NON-TSTM WND GST 3 ENE IDALIA            39.72N 102.25W
02/25/2020  M51 MPH          YUMA               CO   TRAINED SPOTTER

0802 AM     NON-TSTM WND GST FLAGLER                 39.30N 103.07W
02/25/2020  M50 MPH          KIT CARSON         CO   MESONET

0731 AM     NON-TSTM WND GST 4 S BURLINGTON          39.24N 102.28W
02/25/2020  M56 MPH          KIT CARSON         CO   ASOS

0631 AM     NON-TSTM WND GST 4 S BURLINGTON          39.24N 102.28W
02/25/2020  M51 MPH          KIT CARSON         CO   ASOS

&&

Local storm report, Feb 25, 8:31 AM MST, 39 minutes before

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Local storm report, Feb 25, 8:33 AM MST, 37 minutes before

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Local storm report, Feb 25, 8:44 AM MST, 26 minutes before

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Local storm report, Feb 25, 8:56 AM MST, 14 minutes before

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Local storm report, Feb 25, 8:59 AM MST, 11 minutes before

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The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 25, 7:43 AM MST	Snow Squall Warning	GLD	Cheyenne, Sherman	32 min
Feb 25, 8:12 AM MST	Snow Squall Warning	GLD	Cheyenne, Sherman	63 min
Feb 25, 9:06 AM MST	High Wind Warning	GLD	Cheyenne, Kit Carson	3 hr

Nearby

Snow Squall Warnings in Kansas, 2020 Snow Squall Warnings in Colorado, 2020 Every snow squall 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.