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 2, 2021, 7:13 PM MDT for Denver County, Colorado. It was in force for 32 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 2, 2021, 7:13 PM MDT (01:13 UTC)
- Expired
- Jul 2, 2021, 7:45 PM MDT
- In force
- 32 min
- Issued by
- NWS Denver/Boulder, CO
County Denver County, CO
The radar
The Denver radar (KFTG), 22 km from the middle of the area, began a volume at 01:12 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, 1.2 hours before the alert went out and 135 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
- 382 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 2382 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
253 WWUS85 KBOU 030113 SPSBOU Special Weather Statement National Weather Service Denver CO 713 PM MDT Fri Jul 2 2021 COZ040-030145- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County CO- 713 PM MDT Fri Jul 2 2021 ...SPECIAL WEATHER STATEMENT... At 713 PM MDT, Doppler radar was tracking a strong thunderstorm near Commerce City, or 8 miles northeast of Denver, moving southeast at 15 mph. Half inch hail and winds in excess of 30 mph will be possible with this storm. Locations impacted include... Northeastern Denver, northwestern Aurora, southern Commerce City and Denver International Airport. LAT...LON 3968 10482 3983 10495 3990 10481 3983 10461 TIME...MOT...LOC 0113Z 318DEG 13KT 3981 10485 $$ SCHLATTER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 6:36 PM MDT | Special Weather Statement | BOU | Denver | 24 min |
| Jul 2, 6:42 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 33 min |
| Jul 2, 7:11 PM MDT | Areal Flood Advisory | BOU | Adams | 47 min |
| Jul 2, 7:17 PM MDT | Areal Flood Advisory | BOU | Larimer | 88 min |
| Jul 3, 2:03 PM MDT | Areal Flood Advisory | BOU | Larimer | 87 min |
| Jul 3, 2:22 PM MDT | Special Weather Statement | BOU | Weld | 38 min |
| Jul 3, 3:11 PM MDT | Special Weather Statement | BOU | Weld | 34 min |
| Jul 3, 3:23 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 37 min |
| Jul 3, 3:57 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 33 min |
| Jul 3, 4:25 PM MDT | Special Weather Statement | BOU | Logan | 20 min |
| Jul 3, 4:34 PM MDT | Special Weather Statement | BOU | Logan | 26 min |
| Jul 3, 4:45 PM MDT | Special Weather Statement | BOU | Morgan | 30 min |
| Jul 3, 4:53 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 37 min |
| Jul 3, 4:59 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 31 min |
| Jul 3, 5:05 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 25 min |
| Jul 3, 5:14 PM MDT | Special Weather Statement | BOU | Elbert | 31 min |
| Jul 3, 5:20 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 25 min |
| Jul 3, 5:29 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 31 min |
| Jul 3, 5:38 PM MDT | Areal Flood Advisory | BOU | Logan | 82 min |
| Jul 3, 5:40 PM MDT | Areal Flood Advisory | BOU | Elbert | 95 min |
| Jul 3, 5:56 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 34 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.