Overview
During the afternoon of August 8th, 2023, a strong thunderstorm had formed in northeastern Washington county in Colorado. By 4:57pm MDT the thunderstorm had become a supercell and was producing a tornado just a mile and a half south of Highway 34 and a mile west of the Washington/Yuma county lines. The tornado proceeded to move generally southeast while looping in on itself a few times. At the end of its lifecycle, the tornado would try to loop on itself one more time causing it to change its track to move north toward the town of Yuma and increase its wind speed. The tornado would proceed to veer southwest just before town and dissipate around 5:25 pm MDT. The supercell storm would then proceed to move south/southeast across the county producing a few more tornadoes and a Colorado state record hail stone of 5.25 inches on Highway 36 between Kirk and Idalia. A final brief tornado was produced a few miles south of Kanorado.
Tornadoes:
|
Tornado - SW of Yuma
|
||||||||||||||||
|
Tornado - Yuma Multivortex Tornado
|
||||||||||||||||
|
Tornado - CR 23 to 21 Tornado
|
||||||||||||||||
|
Tornado - East of Abarr Tornado
|
||||||||||||||||
|
Tornado - County Road J Tornado
|
||||||||||||||||
|
Tornado - County Road 8 Tornado
|
||||||||||||||||
|
Tornado - Southern Yuma Wildlife Area Tornado
|
||||||||||||||||
|
Tornado - South of Kanorado Tornado
|
||||||||||||||||
The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:
| EF0 Weak 65-85 mph |
EF1 Moderate 86-110 mph |
EF2 Significant 111-135 mph |
EF3 Severe 136-165 mph |
EF4 Extreme 166-200 mph |
EF5 Catastrophic 200+ mph |
![]() |
|||||
Hail
While the supercell was producing tornadoes, the supercell was also producing large to giant hail with numerous reports of 2+ inch hail stones. The supercell also produced a new Colorado state record hail stone with a diameter of 5.25 inches.
![]() |
![]() |
![]() |
![]() |
|
Picture of record hailstone between Kirk and Idalia. (Photo By: Dan Fitts) |
Record hail stone being measured (some melting had occurred). (Photo By: NWS Goodland) |
A variety of hailstones just east of Yuma, Colorado. (Photo By: Lynda Harper) |
Giant hail just southeast of Yuma. (Photo By: Lila Hahn) |
Photos & Video
Pictures of the Yuma Tornado damage.
![]() |
![]() |
![]() |
![]() |
| Overturned irrigation sprinklers. (NWS Survey) |
Power poles being replaced. (NWS survey) |
Damaged building. (NWS Survey) |
Damage building. (NWS Survey) |
![]() |
![]() |
![]() |
![]() |
| Roof torn off building. (NWS Survey) |
Damaged shed. (NWS Survey) |
Outside of damaged shed. (NWS Survey) |
Machine shed collapsed. (NWS Survey) |
Radar
Header
![]() |
![]() |
![]() |
|
| Radar Loop (Coming Soon) | Reflectivity and Velocity at start of Yuma Tornado | Reflectivity and Velocity at end of Yuma Tornado | Reflectivity and Velocity when the record hail stone fell. |
Storm Reports
Preliminary Local Storm Report...Summary
National Weather Service Goodland KS
315 AM MDT Wed Aug 9 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1025 PM Hail 12 NNE Aroya 39.02N 103.08W
08/08/2023 E2.50 inch Cheyenne CO Broadcast Media
Baseball size hail broke numerous double
paned windows in a home in extreme northwest
Cheyenne County. A few miles away, quarter
to golf ball size hail accumulated to a
depth of 6 inches.
0921 PM Tornado 3 SSE Kanorado 39.29N 102.01W
08/08/2023 Sherman KS Official NWS Obs
Tornado debris signature (TDS) observed via
KGLD 0.5 and 0.9 degree tilts at 0321 UTC.
Correlation Coefficient dropout to 0.60-0.75
coincident with velocity couplet and
reflectivity values ranging from 40-50 dBZ.
Signature was only present for 1 volume
scan.
0921 PM Tornado 3 SSE Kanorado 39.29N 102.01W
08/08/2023 Sherman KS Storm Chaser
Possible tornado damage to an abandoned
structure along with downed powerlines east
of County Rd 3 on County Rd 61. Timing
estimated via radar.
0920 PM Hail 3 E Peconic 39.33N 102.10W
08/08/2023 M1.00 inch Kit Carson CO Public
Hail observed on I-70 at MM 447.
0920 PM Hail 3 E Peconic 39.33N 102.10W
08/08/2023 M1.00 inch Kit Carson CO Trained Spotter
Hail observed at MM 447 on I-70.
0920 PM Hail 3 E Peconic 39.33N 102.10W
08/08/2023 M1.00 inch Kit Carson CO Public
Hail observed at MM 447 on I-70.
0727 PM Tornado 8 SSW Idalia 39.60N 102.37W
08/08/2023 Yuma CO Public
Chaser reported ongoing stovepipe tornado.
Chaser was located 21 miles NW of
Burlington. Location of report based on
radar.
0725 PM Tornado 8 SW Idalia 39.61N 102.40W
08/08/2023 Yuma CO Storm Chaser
Partially condensed cone tornado now rain
wrapped. Location estimated via radar.
Chaser was 11 miles SW of Idalia.
0722 PM Hail 8 ENE Kirk 39.66N 102.45W
08/08/2023 M5.00 inch Yuma CO Storm Chaser
Corrects previous hail report from 8 WSW
Idalia. Hail measured at 5.25 inches fell on
Hwy 36. Time estimated. New LSR created with
exact location stone was picked up.
0716 PM Hail Idalia 39.70N 102.29W
08/08/2023 E1.50 inch Yuma CO Public
Report from mPING: Ping Pong Ball (1.50
in.).
0713 PM Hail Idalia 39.70N 102.29W
08/08/2023 E1.25 inch Yuma CO Public
Report from mPING: Half Dollar (1.25 in.).
0711 PM Tornado 7 NE Kirk 39.69N 102.51W
08/08/2023 Yuma CO Storm Chaser
Delayed report via social media. Brief
condensed and uncondensed circulations
roughly 7 miles NE of Kirk from 7 to 7:15 PM
MDT. Image taken at County Rd 3 and R.
Location estimated for tornado.
0710 PM Tornado 8 W Idalia 39.68N 102.45W
08/08/2023 Yuma CO Storm Chaser
Chaser sent video of ongoing tornado that
was dissipated as of 7:13 PM. Video observed
from Roads T and 8. Time and location
estimated via radar.
0709 PM Hail Idalia 39.70N 102.29W
08/08/2023 E1.00 inch Yuma CO Public
Report from mPING: Quarter (1.00 in.).
0707 PM Hail Idalia 39.70N 102.29W
08/08/2023 E0.75 inch Yuma CO Public
Report from mPING: Dime (0.75 in.).
0630 PM Tornado 5 SE Abarr 39.80N 102.65W
08/08/2023 Yuma CO Public
Ongoing tornado reported. Location roughly
10 miles NW of Kirk. Location estimated via
radar and report.
0630 PM Hail 6 WSW Heartstrong 39.93N 102.68W
08/08/2023 E4.00 inch Yuma CO Storm Chaser
Storm chaser reported 3.5 inch to 4 inch
hail near the intersection of Highway 59 and
County Road 25 at approximately 6:30 pm MDT.
0625 PM Tornado 3 E Abarr 39.85N 102.66W
08/08/2023 Yuma CO Storm Chaser
Storm chasers were 7 miles north of Joes
looking to the northwest. They commented
they saw rope tornado for about a minute and
a half, emerging out of rain shaft. Position
estimated by radar.
0620 PM Hail 6 N Abarr 39.94N 102.71W
08/08/2023 E2.50 inch Yuma CO Public
Report from mPING: Tennis Ball (2.50 in.).
0619 PM Tstm Wnd Gst 1 ESE Abarr 39.85N 102.70W
08/08/2023 E60 MPH Yuma CO Trained Spotter
0619 PM Tornado 5 SW Heartstrong 39.89N 102.63W
08/08/2023 Yuma CO Storm Chaser
Tornado just touched down via Chaser live
feed. Location estimated via radar.
0617 PM Hail 7 N Abarr 39.95N 102.71W
08/08/2023 E1.50 inch Yuma CO Public
Report from mPING: Ping Pong Ball (1.50
in.).
0606 PM Tornado 2 NNE Abarr 39.87N 102.71W
08/08/2023 Yuma CO Storm Chaser
Brief tornado lasted about 2 minutes
(6:08PM) roughly 2-3 miles NW of County Rds
L and and 18 intersection.
0559 PM Hail 7 S Yuma 40.03N 102.72W
08/08/2023 E1.25 inch Yuma CO Public
Report from mPING: Half Dollar (1.25 in.).
0545 PM Hail 6 SSW Yuma 40.05N 102.77W
08/08/2023 E1.75 inch Yuma CO Trained Spotter
Up to golf ball hail observed. Power was out
at the residence.
0534 PM Hail 6 NNW Heartstrong 40.04N 102.61W
08/08/2023 E3.00 inch Yuma CO Public
Delayed report via social media with photo
of hailstones. Time estimated.
0530 PM Tornado 7 NNW Heartstrong 40.05N 102.62W
08/08/2023 Yuma CO Storm Chaser
Delayed report via social media.
Multi-vortex tornado reported roughly 7-8
miles southeast of Yuma. Location
approximate based on radar. Tornado has
lifted prior to 5:51 PM MDT.
0518 PM Hail 4 ESE Yuma 40.10N 102.66W
08/08/2023 E1.75 inch Yuma CO Public
Hail was ongoing at the location.
0516 PM Hail 4 SE Yuma 40.08N 102.66W
08/08/2023 E1.00 inch Yuma CO Public
Report from mPING: Quarter (1.00 in.).
0515 PM Hail 7 N Abarr 39.95N 102.72W
08/08/2023 E2.75 inch Yuma CO Public
Corrects previous hail report from 7 N
Abarr. Delayed report via social media with
picture. Time estimated.
0513 PM Tornado 5 S Yuma 40.05N 102.72W
08/08/2023 Yuma CO Storm Chaser
5 power poles snapped along Hwy 59. Time
estimated.
0508 PM Hail 3 W Yuma 40.12N 102.78W
08/08/2023 E4.00 inch Yuma CO Storm Chaser
0502 PM Tornado 2 SW Yuma 40.10N 102.76W
08/08/2023 Yuma CO Fire Dept/Rescue
Tornado on the ground estimated 3 miles west
of the airport. Location estimated.
0500 PM Hail 4 NE Yuma 40.16N 102.67W
08/08/2023 E1.75 inch Yuma CO Public
Delayed report via social media.
![]() |
Media use of NWS Web News Stories is encouraged! Please acknowledge the NWS as the source of any news information accessed from this site. |
![]() |