Alert archive / Colorado / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 343, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 26, 2023, 3:59 PM MDT for Elbert County, Lincoln County, Colorado. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 26, 2023, 3:59 PM MDT (21:59 UTC)
- Expired
- Jul 26, 2023, 4:45 PM MDT
- In force
- 46 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Elbert County, CO, Lincoln County, CO
The radar
The Pueblo radar (KPUX), 81 km from the middle of the area, began a volume at 22:02 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, 10.0 hours before the alert went out and 403 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
- 24 J/kg
- Mixed-layer CIN
- -325 J/kg
- Mixed-layer LCL
- 2677 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 26, 2:59 PM MDT, 1 hour earlier.
Area forecast discussion, Jul 26, 2:59 PM MDT, 1 hour before
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</html>Hazardous weather outlook, Jul 26, 11:03 AM MDT, 4 hours 56 minutes before
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 1103 AM MDT Wed Jul 26 2023 COZ030>051-271715- Jackson County Below 9000 Feet- West Jackson and West Grand Counties Above 9000 Feet- Grand and Summit Counties Below 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Central and Southeast Park County- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Logan County-Washington County-Sedgwick County-Phillips County- 1103 AM MDT Wed Jul 26 2023 This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight Scattered showers and thunderstorms are expected over the mountains and plains this afternoon and evening. Strong and gusty outflow winds up to 60 mph are possible with the stronger storms along with brief rain and hail. The storms will gradually diminish by later this evening. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Late day showers and thunderstorms will be likely over the high country Thursday through Sunday. The main threat will be strong outflow winds, small hail and brief heavy rains. As a result, there will be a limited threat for flash flooding over the burn areas. An increase of moisture on Monday and Tuesday will increase shower/thunderstorm chances and coverage. This will result in an increased threat for flash flooding, especially over the burned areas. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today and tonight. However, any reports of strong, gusty winds or wind damage will be appreciated.
In the hours before
Local storm report, Jul 26, 10:04 AM MDT, 5 hours 55 minutes before
Preliminary Local Storm Report
National Weather Service Denver CO
1004 AM MDT Wed Jul 26 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0500 PM Tstm Wnd Dmg Hugo 39.13N 103.47W
07/25/2023 Lincoln CO Law Enforcement
Delayed report: Lincoln County Sheriff
shared photos of numerous uprooted trees, a
few broken telephone poles, barns and sheds
destroyed, flipped over fifth wheel campers,
and lots of roof damage in the town of Hugo.
&&
GHSpecial weather statement, Jul 26, 1:23 PM MDT, 2 hours 36 minutes before
Special Weather Statement
National Weather Service Denver CO
123 PM MDT Wed Jul 26 2023
COZ041-262015-
Elbert/Central and East Douglas Counties Above 6000 Feet CO-
123 PM MDT Wed Jul 26 2023
...A strong thunderstorm will impact portions of southeastern Douglas
and west central Elbert Counties through 215 PM MDT...
At 123 PM MDT, Doppler radar was tracking a strong thunderstorm 4
miles north of Larkspur, or 30 miles north of Colorado Springs,
moving east at 30 mph.
HAZARD...Winds in excess of 40 mph and half inch hail.
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...
Castle Rock, Elbert, Larkspur, Greenland and Perry Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3919 10492 3923 10496 3927 10495 3930 10497
3940 10493 3931 10445 3913 10452 3913 10473
TIME...MOT...LOC 1923Z 285DEG 24KT 3928 10490
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
ADSpecial weather statement, Jul 26, 3:01 PM MDT, 58 minutes before
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</html>The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 6:10 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert, Lincoln, Washington | 50 min |
| Jul 25, 9:08 PM MDT | Special Weather Statement | BOU | Douglas | 52 min |
| Jul 26, 12:35 PM MDT | Areal Flood Advisory | BOU | Larimer | 2 hr |
| Jul 26, 1:20 PM MDT | Flash Flood Warning | BOU | Grand | 3 hr |
| Jul 26, 1:23 PM MDT | Special Weather Statement | BOU | Douglas | 52 min |
| Jul 26, 1:26 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 49 min |
| Jul 26, 3:01 PM MDT | Special Weather Statement | BOU | Denver | 44 min |
| Jul 26, 3:26 PM MDT | Special Weather Statement | BOU | Lincoln | 49 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2023Every severe thunderstorm warning in 2023
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.