Alert archive / Colorado / Winter Storm Watches in 2017
Winter Storm Watch 8, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm watch at Mar 27, 2017, 3:14 PM MDT for 7 counties in Colorado. It took effect at Mar 28, 2017, 6:00 PM MDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Mar 27, 2017, 3:14 PM MDT (21:14 UTC)
- In effect from
- Mar 28, 2017, 6:00 PM MDT
- Expired
- Mar 28, 2017, 6:04 AM MDT
- In force
- Issued by
- NWS Denver/Boulder, CO
Counties Arapahoe County, CO, Clear Creek County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Jefferson County, CO, Park County, CO
The radar
The Denver radar (KFTG), 55 km from the middle of the area, began a volume at 21:17 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
Grand Junction, CO (KGJT), launched 12:00Z, 9.2 hours before the alert went out and 297 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
- 2128 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 127 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 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 winter storm watch went out at Mar 27, 11:52 AM MDT, 3 hours 22 minutes earlier.
Area forecast discussion, Mar 27, 11:52 AM MDT, 3 hours 22 minutes before
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</html>Hazardous weather outlook, Mar 27, 10:38 AM MDT, 4 hours 36 minutes before
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Winter Storm Watches in Colorado, 2017Every winter storm watch in 2017
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.