Alert archive / Colorado / Special Weather Statements in 2021
Special Weather Statement, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this special weather statement at Jul 17, 2021, 9:13 PM MDT for Crowley County, Colorado. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 17, 2021, 9:13 PM MDT (03:13 UTC)
- Expired
- Jul 17, 2021, 10:00 PM MDT
- In force
- 47 min
- Issued by
- NWS Denver/Boulder, CO
County Crowley County, CO
The radar
The Pueblo radar (KPUX), 37 km from the middle of the area, began a volume at 03:17 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
Denver, CO (KDNR), launched 00:00Z, 3.2 hours before the alert went out and 147 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
- 55 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 3294 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
594 WWUS85 KBOU 180313 SPSBOU Special Weather Statement National Weather Service Denver CO 913 PM MDT Sat Jul 17 2021 COZ047-180400- Southeast Elbert County Below 6000 Feet/South Lincoln County CO- 913 PM MDT Sat Jul 17 2021 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL LINCOLN COUNTY UNTIL 1000 PM MDT... At 913 PM MDT, Doppler radar was tracking a strong thunderstorm 8 miles southwest of Forder, or 42 miles north of North La Junta, moving north at 10 mph. Penny size hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Forder. LAT...LON 3870 10390 3869 10369 3852 10370 3852 10389 TIME...MOT...LOC 0313Z 191DEG 9KT 3858 10381 $$ ENTREKIN
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 6:01 PM MDT | Special Weather Statement | BOU | Denver | 29 min |
| Jul 17, 6:42 PM MDT | Special Weather Statement | BOU | Arapahoe | 33 min |
| Jul 17, 6:53 PM MDT | Special Weather Statement | BOU | Morgan | 22 min |
| Jul 17, 7:06 PM MDT | Special Weather Statement | BOU | Adams | 24 min |
| Jul 17, 7:11 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan | 34 min |
| Jul 17, 7:37 PM MDT | Areal Flood Advisory | BOU | Adams, Morgan | 113 min |
| Jul 17, 7:44 PM MDT | Special Weather Statement | BOU | Morgan | 46 min |
| Jul 17, 8:10 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Washington | 50 min |
| Jul 17, 8:55 PM MDT | Special Weather Statement | BOU | Logan | 50 min |
| Jul 17, 10:18 PM MDT | Special Weather Statement | BOU | Lincoln | 42 min |
| Jul 17, 10:38 PM MDT | Areal Flood Advisory | BOU | Elbert, Lincoln | 82 min |
Nearby
Special Weather Statements in Colorado, 2021Every special weather statement 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.