Alert archive / Colorado / Snow Squall Warnings in 2024
Snow Squall Warning 9, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this snow squall warning at Feb 27, 2024, 10:30 AM MST for Arapahoe County, Colorado. It was in force for 30 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 27, 2024, 10:30 AM MST (17:30 UTC)
- Expired
- Feb 27, 2024, 11:00 AM MST
- In force
- 30 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
County Arapahoe County, CO
The radar
The Denver radar (KFTG), 23 km from the middle of the area, began a volume at 17:32 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, 5.5 hours before the alert went out and 357 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
- 2072 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Denver/Boulder, CO wrote its last area forecast discussion before this snow squall warning went out at Feb 27, 10:12 AM MST, 18 minutes earlier.
Area forecast discussion, Feb 27, 10:12 AM MST, 18 minutes before
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</html>Hazardous weather outlook, Feb 27, 6:05 AM MST, 4 hours 25 minutes before
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 605 AM MST Tue Feb 27 2024 COZ030>051-281315- 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- 605 AM MST Tue Feb 27 2024 Winter Storm Warning until 11 PM MST this evening for the mountains above 9,000 feet. This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight Heavy snow should continue in the mountains through this evening, with an additional 4-10 inches possible, combined with winds gusting over 60 mph. The heaviest snow in the mountains will be in the early to mid morning. Across the plains, a cold front will usher in much colder air and light snow showers. A heavier snow squall is possible this morning across the plains of northeast Colorado, with the potential for briefly slick road conditions and poor visibility. Snow accumulations across the plains and I-25 corridor should overall be light, mainly an inch or less. .DAYS TWO THROUGH SEVEN...Wednesday through Monday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Snowfall reports will be appreciated. Gimmestad/Schlatter
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 5:11 AM MST | Snow Squall Warning | BOU | Larimer, Weld | 64 min |
| Feb 27, 7:14 AM MST | Snow Squall Warning | BOU | Weld | 31 min |
| Feb 27, 8:02 AM MST | Snow Squall Warning | BOU | Logan, Weld | 43 min |
| Feb 27, 8:19 AM MST | Snow Squall Warning | BOU | Boulder | 26 min |
| Feb 27, 8:39 AM MST | Snow Squall Warning | BOU | Adams, Arapahoe, Boulder, Broomfield, Denver, Jefferson and 1 more | 36 min |
| Feb 27, 9:09 AM MST | Snow Squall Warning | BOU | Adams, Arapahoe, Broomfield, Denver, Douglas, Jefferson and 1 more | 51 min |
| Feb 27, 9:39 AM MST | Snow Squall Warning | BOU | Adams, Arapahoe | 51 min |
| Feb 27, 10:11 AM MST | Snow Squall Warning | BOU | Douglas | 34 min |
Nearby
Snow Squall Warnings in Colorado, 2024Every snow squall warning in 2024
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.