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 Aug 7, 2021, 1:08 PM MDT for Lincoln County, Colorado. It was in force for 52 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
- Aug 7, 2021, 1:08 PM MDT (19:08 UTC)
- Expired
- Aug 7, 2021, 2:00 PM MDT
- In force
- 52 min
- Issued by
- NWS Denver/Boulder, CO
- Hail
- 0.50 in
- Wind
- 50
County Lincoln County, CO
The radar
The Pueblo radar (KPUX), 61 km from the middle of the area, began a volume at 19:10 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 12:00Z, 7.1 hours before the alert went out and 116 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
- 90 J/kg
- Mixed-layer CIN
- -282 J/kg
- Mixed-layer LCL
- 2495 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
090
WWUS85 KBOU 071908
SPSBOU
Special Weather Statement
National Weather Service Denver CO
108 PM MDT Sat Aug 7 2021
COZ041-046-047-072000-
Elbert/Central and East Douglas Counties Above 6000 Feet CO-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County CO-
Southeast Elbert County Below 6000 Feet/South Lincoln County CO-
108 PM MDT Sat Aug 7 2021
...A strong thunderstorm will impact portions of southeastern Elbert
County through 200 PM MDT...
At 107 PM MDT, Doppler radar was tracking a strong thunderstorm 6
miles southeast of Simla, or 22 miles southwest of Limon, moving
southeast at 10 mph.
HAZARD...Wind gusts up to 50 mph, half inch hail and heavy rain
possible.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Kutch and Matheson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3881 10404 3917 10404 3921 10374 3884 10373
TIME...MOT...LOC 1907Z 305DEG 9KT 3906 10403
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
$$
RJKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:15 PM MDT | Special Weather Statement | BOU | Logan | 45 min |
| Aug 6, 6:24 PM MDT | Special Weather Statement | BOU | Jackson | 36 min |
| Aug 6, 6:53 PM MDT | Flash Flood Warning | BOU | Larimer | 2 hr |
| Aug 6, 7:36 PM MDT | Special Weather Statement | BOU | Larimer | 24 min |
| Aug 6, 7:58 PM MDT | Areal Flood Advisory | BOU | Larimer | 2 hr |
| Aug 6, 10:06 PM MDT | Areal Flood Advisory | BOU | Larimer | 84 min |
| Aug 7, 1:48 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 42 min |
| Aug 7, 2:29 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 33 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.