Alert archive / Colorado / High Wind Watches in 2025

High Wind Watch 8, NWS Denver/Boulder, CO

December 17, 2025Phillips County, Sedgwick County, Colorado

NWS Denver/Boulder, CO issued this high wind watch at Dec 17, 2025, 1:35 AM MST for Phillips County, Sedgwick County, Colorado. It took effect at Dec 18, 2025, 5:00 AM MST. It was in force for .

The area

The counties it named.

The facts

Issued
Dec 17, 2025, 1:35 AM MST (08:35 UTC)
In effect from
Dec 18, 2025, 5:00 AM MST
Expired
Dec 17, 2025, 2:26 PM MST
In force
Issued by
NWS Denver/Boulder, CO

Counties Phillips County, CO, Sedgwick County, CO

The radar

The Goodland radar (KGLD), 162 km from the middle of the area, began a volume at 08:36 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

Dodge City, (KDDC), launched 00:00Z, 8.6 hours before the alert went out and 392 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, Dodge City, at 00:00Z on 2025-12-17Temperature 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, Dodge City, at 00:00Z on 2025-12-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.193958Sfc1 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
3862 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
-26 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 high wind watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this high wind watch went out at Dec 16, 10:39 PM MST, 2 hours 56 minutes earlier.

Area forecast discussion, Dec 16, 10:39 PM MST, 2 hours 56 minutes before
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Hazardous weather outlook, Dec 16, 10:58 AM MST, 14 hours 37 minutes before
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1058 AM MST Tue Dec 16 2025

COZ030>051-171800-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1058 AM MST Tue Dec 16 2025

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Breezy winds and marginal relative humidity values will create
elevated fire weather concerns through late afternoon for the
foothills and adjacent plains.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

A long period of strong winds and elevated to critical fire
weather conditions are expected across the Front Range Mountains,
foothills, and adjacent plains Wednesday through Friday. Snow will
return to the mountains Wednesday and Saturday, creating slick
roads.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 17, 2:26 PM MSTHigh Wind WatchBOUBoulder, Broomfield, Clear Creek, Douglas, Gilpin, Grand and 6 more51 hr
Dec 17, 3:24 PM MSTFire Weather WatchBOUAdams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 8 more35 hr

Nearby

High Wind Watches in Colorado, 2025Every high wind watch in 2025

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.