Alert archive / Colorado / Winter Storm Watches in 2021
Winter Storm Watch 9, NWS Pueblo, CO
NWS Pueblo, CO issued this winter storm watch at Oct 10, 2021, 2:21 PM MDT for Conejos County, Mineral County, Rio Grande County, Colorado. It took effect at Oct 12, 2021, 12:00 AM MDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Oct 10, 2021, 2:21 PM MDT (20:21 UTC)
- In effect from
- Oct 12, 2021, 12:00 AM MDT
- Expired
- Oct 11, 2021, 4:14 AM MDT
- In force
- Issued by
- NWS Pueblo, CO
Counties Conejos County, CO, Mineral County, CO, Rio Grande County, CO
The radar
The Pueblo radar (KPUX), 230 km from the middle of the area, began a volume at 20:19 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, 8.4 hours before the alert went out and 253 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
- 1362 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
882 WWUS45 KPUB 102021 WSWPUB URGENT - WINTER WEATHER MESSAGE National Weather Service Pueblo CO 221 PM MDT Sun Oct 10 2021 COZ068-111300- /O.NEW.KPUB.WS.A.0009.211012T0600Z-211013T0000Z/ Eastern San Juan Mountains Above 10000 Feet- 221 PM MDT Sun Oct 10 2021 ...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 12 inches possible. Winds could gust as high as 50 mph. * WHERE...Eastern San Juan Mountains Above 10000 Feet. * WHEN...From late Monday night through Tuesday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact travel. Gusty winds could bring down tree branches. The snow will combine with strong winds to produce areas of blowing and drifting of snow, along with reduced visibilities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Cohen
1 follow-up statement
779 WWUS45 KPUB 111014 WSWPUB URGENT - WINTER WEATHER MESSAGE National Weather Service Pueblo CO 414 AM MDT Mon Oct 11 2021 COZ068-111815- /O.UPG.KPUB.WS.A.0009.211012T0600Z-211013T0000Z/ /O.NEW.KPUB.WS.W.0009.211012T0600Z-211013T0000Z/ Eastern San Juan Mountains Above 10000 Feet- 414 AM MDT Mon Oct 11 2021 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 12 inches. Winds gusting as high as 65 mph. * WHERE...Eastern San Juan Mountains Above 10000 Feet. * WHEN...From midnight tonight to 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact travel. Patchy blowing snow could significantly reduce visibility. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ COZ066-111815- /O.NEW.KPUB.WW.Y.0029.211012T0600Z-211013T0000Z/ La Garita Mountains Above 10000 Feet- 414 AM MDT Mon Oct 11 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT TUESDAY... * WHAT...Snow expected. Total snow accumulations of 8 inches. Winds gusting as high as 50 mph. * WHERE...La Garita Mountains Above 10000 Feet. * WHEN...From midnight tonight to 6 PM MDT Tuesday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact travel. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
The office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 10, 3:46 AM MDT | Hard Freeze Warning | PUB | Alamosa, Conejos, Costilla, Rio Grande, Saguache | 29 hr |
| Oct 10, 2:13 PM MDT | Frost Advisory | PUB | El Paso | 18 hr |
| Oct 10, 2:19 PM MDT | Fire Weather Watch | PUB | Baca, Bent, Crowley, El Paso, Huerfano, Kiowa and 4 more | 31 hr |
Nearby
Winter Storm Watches in Colorado, 2021Every winter storm watch in 2021
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.