Alert archive / Colorado / Freeze Warnings in 2021
Freeze Warning 2, NWS Pueblo, CO
NWS Pueblo, CO issued this freeze warning at Sep 21, 2021, 11:44 AM MDT for 5 counties in Colorado. It took effect at Sep 22, 2021, 3:00 AM MDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 21, 2021, 11:44 AM MDT (17:44 UTC)
- In effect from
- Sep 22, 2021, 3:00 AM MDT
- Expired
- Sep 22, 2021, 9:00 AM MDT
- In force
- 6 hr
- Issued by
- NWS Pueblo, CO
Counties Alamosa County, CO, Conejos County, CO, Costilla County, CO, Rio Grande County, CO, Saguache County, CO
The nearest sounding before it
Grand Junction, CO (KGJT), launched 12:00Z, 5.7 hours before the alert went out and 279 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
- 2555 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- -162 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
392 WWUS75 KPUB 211744 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 1144 AM MDT Tue Sep 21 2021 COZ069>071-220145- /O.UPG.KPUB.FZ.A.0002.210922T0900Z-210922T1500Z/ /O.NEW.KPUB.FZ.W.0002.210922T0900Z-210922T1500Z/ Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- 1144 AM MDT Tue Sep 21 2021 ...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM MDT WEDNESDAY... * WHAT...A hard freeze is expected early Wednesday morning over the San Luis Valley with temperatures reaching as low at 25F. * WHERE...The San Luis Valley below 8500 feet. * WHEN...From 3 AM to 9 AM MDT Wednesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$
4 follow-up statements
842 WWUS75 KPUB 212041 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 241 PM MDT Tue Sep 21 2021 COZ069>071-220500- /O.CON.KPUB.FZ.W.0002.210922T0900Z-210922T1500Z/ Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- 241 PM MDT Tue Sep 21 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM MDT WEDNESDAY... * WHAT...A hard freeze is expected early Wednesday morning over the San Luis Valley with temperatures reaching as low at 25F. * WHERE...The San Luis Valley below 8500 feet. * WHEN...From 3 AM to 9 AM MDT Wednesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$
052 WWUS75 KPUB 220252 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 852 PM MDT Tue Sep 21 2021 COZ069>071-221100- /O.CON.KPUB.FZ.W.0002.210922T0900Z-210922T1500Z/ Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- 852 PM MDT Tue Sep 21 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM MDT WEDNESDAY... * WHAT...A hard freeze is expected early Wednesday morning over the San Luis Valley with temperatures reaching as low at 25F. * WHERE...The San Luis Valley below 8500 feet. * WHEN...From 3 AM to 9 AM MDT Wednesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ Hodanish
183 WWUS75 KPUB 220958 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 358 AM MDT Wed Sep 22 2021 COZ069>071-221500- /O.CON.KPUB.FZ.W.0002.000000T0000Z-210922T1500Z/ Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- 358 AM MDT Wed Sep 22 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM MDT THIS MORNING... * WHAT...A hard freeze is expected this morning over the San Luis Valley with temperatures reaching as low as 25F. * WHERE...The San Luis Valley below 8500 feet. * WHEN...through 9 AM MDT this morning. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$
394 WWUS75 KPUB 221455 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 855 AM MDT Wed Sep 22 2021 COZ069>071-221600- /O.EXP.KPUB.FZ.W.0002.000000T0000Z-210922T1500Z/ Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- 855 AM MDT Wed Sep 22 2021 ...FREEZE WARNING WILL EXPIRE AT 9 AM MDT THIS MORNING... Freezing temperatures are no longer occurring, therefore the Freeze Warning will be allowed to expire. $$
The office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 3:55 AM MDT | Freeze Watch | PUB | Alamosa, Conejos, Costilla, Rio Grande, Saguache | 8 hr |
Nearby
Freeze Warnings in Colorado, 2021Every freeze warning 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.