Alert archive / Colorado / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 252, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 13, 2024, 7:13 PM MDT for Washington 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
- Aug 13, 2024, 7:13 PM MDT (01:13 UTC)
- Expired
- Aug 13, 2024, 7:45 PM MDT
- In force
- 32 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Washington County, CO
The radar
The Goodland radar (KGLD), 143 km from the middle of the area, began a volume at 01:14 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 13, 4:52 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.2 hours before the alert went out and 210 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
- 608 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.2
The text
As transmitted.
064
WUUS55 KBOU 140113
SVRBOU
COC121-140145-
/O.NEW.KBOU.SV.W.0252.240814T0113Z-240814T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
713 PM MDT Tue Aug 13 2024
The National Weather Service in Denver Colorado has issued a
* Severe Thunderstorm Warning for...
Northeastern Washington County in northeastern Colorado...
* Until 745 PM MDT.
* At 713 PM MDT, severe thunderstorms were located along a line
extending from 6 miles north of Burdett to 4 miles southeast of
Otis, or along a line extending from 18 miles southeast of Sterling
to 10 miles west of Yuma, moving east at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Otis, Lone Star, and Burdett.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4035 10280 4010 10279 4010 10297 4044 10298
4044 10278 4035 10278
TIME...MOT...LOC 0113Z 262DEG 17KT 4045 10292 4010 10292
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RPK2 follow-up statements
265
WWUS55 KBOU 140124
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
724 PM MDT Tue Aug 13 2024
COC121-140145-
/O.CON.KBOU.SV.W.0252.000000T0000Z-240814T0145Z/
Washington CO-
724 PM MDT Tue Aug 13 2024
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM MDT
FOR NORTHEASTERN WASHINGTON COUNTY...
At 724 PM MDT, severe thunderstorms were located along a line
extending from 7 miles north of Lone Star to 5 miles southeast of
Otis, or along a line extending from 20 miles southeast of Sterling
to 7 miles west of Yuma, moving east at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Otis, Lone Star, and Burdett.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4035 10280 4010 10279 4010 10297 4044 10298
4044 10278 4035 10278
TIME...MOT...LOC 0124Z 262DEG 17KT 4046 10287 4011 10287
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RPK251
WWUS55 KBOU 140143
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
743 PM MDT Tue Aug 13 2024
COC121-140153-
/O.EXP.KBOU.SV.W.0252.000000T0000Z-240814T0145Z/
Washington CO-
743 PM MDT Tue Aug 13 2024
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WASHINGTON COUNTY
WILL EXPIRE AT 745 PM MDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 100 AM MDT for
northeastern Colorado.
LAT...LON 4035 10280 4010 10279 4010 10297 4044 10298
4044 10278 4035 10278
TIME...MOT...LOC 0143Z 262DEG 17KT 4047 10278 4012 10278
$$
RPKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 6:02 PM MDT | Areal Flood Advisory | BOU | Arapahoe, Elbert | 28 min |
| Aug 13, 6:06 PM MDT | Tornado Warning | BOU | Washington | 24 min |
| Aug 13, 6:15 PM MDT | Flash Flood Warning | BOU | Jefferson | 58 min |
| Aug 13, 6:15 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 45 min |
| Aug 13, 6:30 PM MDT | Flash Flood Warning | BOU | Arapahoe, Elbert, Lincoln | 95 min |
| Aug 13, 6:34 PM MDT | Areal Flood Advisory | BOU | Morgan, Washington | 3 hr |
| Aug 13, 6:35 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 40 min |
| Aug 13, 6:46 PM MDT | Areal Flood Advisory | BOU | Logan, Morgan, Washington | 3 hr |
| Aug 13, 6:59 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 46 min |
| Aug 13, 7:12 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 33 min |
| Aug 13, 7:24 PM MDT | Areal Flood Advisory | BOU | Washington | 3 hr |
| Aug 13, 7:25 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 50 min |
| Aug 13, 7:31 PM MDT | Tornado Warning | BOU | Washington | 29 min |
| Aug 13, 8:07 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 23 min |
| Aug 14, 12:45 PM MDT | Areal Flood Warning | BOU | Logan | 20 hr |
| Aug 14, 3:29 PM MDT | Special Weather Statement | BOU | Broomfield | 46 min |
| Aug 14, 3:39 PM MDT | Areal Flood Advisory | BOU | Weld | 3 hr |
Nearby
Severe Thunderstorm Warnings in Colorado, 2024Every severe thunderstorm warning in 2024
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.