Heavy to excessive rainfall over the southern Appalachians may bring areas of flooding Tuesday. Hot to extremely hot temperatures are in place through Tuesday across much of the western U.S. and northern New England. Tropical Storm Erin is forecast to become a Major Hurricane by this weekend as it moves across the central Atlantic Ocean. Monitor future forecasts for any East Coast impacts. Read More >
Overview
An intense supercell thunderstorm moved eastward across Yuma County Colorado and Dundy County Nebraska during the evening of the 20th. The thunderstorm produced hail up to softball size and straight-line wind gusts over 100 MPH, based on damage. The largest hail occurred near Yuma, CO while the most intense winds occurred over Dundy County, specifically near the Parks, NE area. The swath of the most intense winds ended just east of Parks. You can view the official summary here.
Wind & Hail:
Wind
Wind gusts up to an estimated 118 MPH occurred near Parks, NE. The highest gusts, estimated by the damage, occurred north of Parks where power poles were snapped. Four power poles were also snapped west of Parks on Highway 34. Here is a map of the points that were surveyed.
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| Large tree limbs down and an electric pole leaning in Parks, NE. | One electrical pole, of 13 in one stretch, that were snapped north of Parks, NE. | Roof damage west of Parks, NE. | Pre-1930s era barn destroyed west of Parks, NE. |
Hail:
Hail
The worst of the hail was reported around Yuma, CO. The largest hail reported near Yuma was softball size. Wind gusts over 70 MPH also occurred with the hail. Here is a map of the survey points for the hail.
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| Accumulating hail in Yuma, CO. | Hail damage to a house after the storm in Yuma, CO. | Siding damage from hail storm in Yuma, CO. | Vinyl fence destroyed from hail in Yuma, CO. |
Radar:
Radar
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| 858 PM MDT Reflectivity storm approaching Yuma. | 858 PM MDT Annotated Reflectivity | 849 PM MDT to 910 PM MDT Loop. Notice southern portion of storm surge to the east, indicative of strong winds. | 1005 PM MDT to 1200 AM MDT loop showing development of intense bow echo. Storm reports also listed. Notice how the whole system begins to rotate at end of the loop! |
Storm Reports
Preliminary Local Storm Report...Summary...Corrected
National Weather Service Goodland KS
922 PM MDT Tue May 21 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0600 AM Rain 2 NNW Blakeman 39.84N 101.13W
05/21/2024 M0.28 Inch Rawlins KS Trained Spotter
0.28 inches of rain as of time of report.
0129 AM Hail 1 SW Bartley 40.24N 100.32W
05/21/2024 E0.70 Inch Red Willow NE Trained Spotter
Penny to dime sized hail reported 1 mile
southwest of Bartley.
0950 PM Hail 6 NE Heartstrong 40.00N 102.49W
05/20/2024 E0.88 Inch Yuma CO Trained Spotter
Corrects previous hail report from 6 NE
Heartstrong.
0932 PM Hail 4 N Eckley 40.16N 102.47W
05/20/2024 M1.00 Inch Yuma CO Public
Report from mPING: Quarter (1.00 in.).
1045 PM Hail 1 N Vernon 39.94N 102.28W
05/20/2024 E1.00 Inch Yuma CO Public
Public report via social media of quarter
hail 1/2 mile north of Vernon, CO.
0700 AM Rain 2 NNE Hale 39.66N 102.12W
05/21/2024 M1.13 Inch Yuma CO Trained Spotter
1.13 inches of rain as of time of report.
1046 PM Hail 1 E Haigler 40.02N 101.91W
05/20/2024 E1.25 Inch Dundy NE Public
Report from mPING: Half Dollar (1.25 in.).
1028 PM Hail Wray 40.08N 102.22W
05/20/2024 M1.25 Inch Yuma CO Public
Public report and photos via social media of
hail ranging from 1-1.25 inch diameter.
0700 AM Rain Haigler 40.01N 101.94W
05/21/2024 M1.50 Inch Dundy NE Trained Spotter
Spotter reports 1.5 inches of rain.
0933 PM Hail 4 N Eckley 40.16N 102.47W
05/20/2024 E1.50 Inch Yuma CO Public
Report from mPING: Ping Pong Ball (1.50
in.).
1015 PM Hail 1 E Wray 40.08N 102.21W
05/20/2024 E1.50 Inch Yuma CO Public
Report and photo of approx. ping pong ball
size hail at the east end of Wray, CO at
10:15 PM MDT.
1145 PM Hail 12 W Palisade 40.34N 101.33W
05/20/2024 E1.75 Inch Dundy NE Public
Golf ball size hail reported 14 miles NNW of
Stratton, NE. Time estimated from radar.
0910 PM Hail 1 NNE Yuma 40.13N 102.72W
05/20/2024 E1.75 Inch Yuma CO Public
Report and photos via social media of hail
up to golf ball size but mostly smaller
stones with drifts estimated from photos to
be up to around 1 foot tall. Wind driven
hail broke windows and damaged siding. Time
estimated from radar.
0914 PM Hail 3 SE Yuma 40.09N 102.68W
05/20/2024 E1.75 Inch Yuma CO Trained Spotter
quarter to golf ball sized hail.
0920 PM Hail 5 NE Yuma 40.17N 102.66W
05/20/2024 E1.75 Inch Yuma CO Public
Corrects previous hail report from 5 NE
Yuma. Report and photos via social media
(X), varying hail sizes up to golf ball
size. Lots of windows broke out, hail
covering ground. Time corrected, radar
estimated.
1010 PM Hail Wray 40.08N 102.22W
05/20/2024 E1.75 Inch Yuma CO Public
Report and photos via social media of
approx. golf ball size hail in Wray, CO.
1015 PM Hail Wray 40.08N 102.22W
05/20/2024 E1.75 Inch Yuma CO Public
1015 PM Hail 4 NNE Wray 40.14N 102.20W
05/20/2024 E1.75 Inch Yuma CO Cocorahs
CoCoRAHS report of golf ball size hail.
Report of shredded leaves, car dents,
damaged shingles, and broken house and car
windows. Time estimated from radar.
1155 PM Hail 8 NNW Stratton 40.26N 101.28W
05/20/2024 E2.00 Inch Hitchcock NE Trained Spotter
Trained spotter reporting hail between the
sizes of golf balls and hen eggs.
1215 AM Hail Palisade 40.35N 101.11W
05/21/2024 E2.00 Inch Hitchcock NE Public
Public report and photo via social media of
hail in Palisade; sizes estimated from photo
ranging from approx. half dollar size to
around 2 inches in diameter. Time estimated
from radar.
0910 PM Hail 1 WSW Yuma 40.12N 102.74W
05/20/2024 M2.00 Inch Yuma CO Public
2 inch hail reported on the southwest side
of Yuma, started around 9:10 PM MDT and
lasted approx. 15 minutes. Location
estimated.
1217 AM Hail Palisade 40.35N 101.11W
05/21/2024 E2.50 Inch Hitchcock NE Public
Report and photo via social media of hail
estimated from photo to be around the size
of a tennis ball. Hail was reported to have
varied in size.
1130 PM Hail 12 N Max 40.28N 101.42W
05/20/2024 E2.50 Inch Dundy NE Public
Report and photo via social media (X) of
around tennis ball size hail in northeast
Dundy county.
0943 PM Hail 4 N Eckley 40.16N 102.47W
05/20/2024 M2.50 Inch Yuma CO Public
Report from mPING: Tennis Ball (2.50 in.).
0902 AM Rain 6 NE Heartstrong 40.00N 102.49W
05/21/2024 M2.50 Inch Yuma CO Trained Spotter
Storm total.
0900 PM Hail Yuma 40.12N 102.72W
05/20/2024 E2.75 Inch Yuma CO Public
Report and photos via social media (X) of
accumulating hail and hail drifts in Yuma.
Biggest stones baseball size or larger with
most stones 1 to 2.25 inch.
0900 PM Hail 1 S Yuma 40.11N 102.72W
05/20/2024 E4.00 Inch Yuma CO Emergency Mngr
Emergency manager reports fire department
had tennis to softball size hail about 1
mile south of Yuma.
0905 PM Tstm Wnd Gst 2 N Yuma 40.15N 102.72W
05/20/2024 M51 MPH Yuma CO Mesonet
Mesonet station YUM02 2 N Yuma 2.
0902 PM Tstm Wnd Gst 4 E Yuma 40.13N 102.65W
05/20/2024 M52 MPH Yuma CO Mesonet
WeatherLink site Yuma Dairy.
1125 PM Tstm Wnd Gst 19 NW Max 40.32N 101.62W
05/20/2024 M54 MPH Dundy NE Mesonet
Mesonet station NB086 Enders 10SW.
1031 PM Tstm Wnd Gst 5 NE Vernon 39.98N 102.20W
05/20/2024 M59 MPH Yuma CO Mesonet
Weatherlink site Osmus Farm.
1004 PM Tstm Wnd Gst 3 NNW Vernon 39.98N 102.30W
05/20/2024 M60 MPH Yuma CO Mesonet
Weatherlink site Welp Farms.
1053 PM Tstm Wnd Gst 6 NNE Haigler 40.09N 101.89W
05/20/2024 M61 MPH Dundy NE Mesonet
Weatherlink site Brunswig Shop.
0914 PM Tstm Wnd Gst 2 SSE Yuma 40.10N 102.72W
05/20/2024 M62 MPH Yuma CO AWOS
Corrects previous tstm wnd gst report from 2
SSE Yuma. The AWOS in Yuma (K2V6) measured
NNW winds sustained at 48 mph gusting to 62
mph at 914 pm MDT.
1015 PM Tstm Wnd Gst 2 NW Wray 40.10N 102.25W
05/20/2024 M63 MPH Yuma CO AWOS
AWOS station K2V5 2 NW Wray.
1107 PM Tstm Wnd Gst 13 NNW Benkelman 40.23N 101.61W
05/20/2024 M66 MPH Dundy NE Mesonet
Weatherunderground site KNEBENKE10. Wind
direction from the north-northeast.
0915 PM Tstm Wnd Gst 2 N Yuma 40.15N 102.72W
05/20/2024 M67 MPH Yuma CO Mesonet
Mesonet station YUM02 2 N Yuma 2.
1040 PM Tstm Wnd Gst 3 S Wray 40.04N 102.23W
05/20/2024 E70 MPH Yuma CO Storm Chaser
Report of estimated 70 mph wind gusts on Hwy
385 approx. 3.5 to 1.5 miles south of Hwy 34
in Wray.
0916 PM Tstm Wnd Gst 6 SSE Yuma 40.05N 102.67W
05/20/2024 M75 MPH Yuma CO Mesonet
Weatherunderground site KCOYUMA29.
0950 PM Tstm Wnd Gst 6 NE Heartstrong 40.00N 102.49W
05/20/2024 M75 MPH Yuma CO Trained Spotter
occurred with nickel size hail.
1112 PM Tstm Wnd Gst Parks 40.04N 101.73W
05/20/2024 M91 MPH Dundy NE Mesonet
Personal weather station in Parks, NE
measured a wind gust of 91 mph. Report
carport is gone and a camper was blown out
of the carport.
1054 PM Tstm Wnd Gst 6 NNE Haigler 40.09N 101.89W
05/20/2024 M93 MPH Dundy NE Mesonet
Weatherlink site Brunswig Shop.
1050 PM Tstm Wnd Dmg 8 N Haigler 40.12N 101.93W
05/20/2024 Dundy NE Trained Spotter
Corrects time on previous tstm wnd dmg
report from 8 N Haigler. Spotter reported
uprooted trees and some building damage.
1100 PM Tstm Wnd Dmg 4 WSW Parks 40.03N 101.81W
05/20/2024 Dundy NE Public
Report and photos via social media of downed
trees and damage to a barn and grain bin
approx. 13 miles west of Benkelman. Time
estimated from radar.
0126 AM Flash Flood Atwood 39.81N 101.05W
05/21/2024 Rawlins KS Public
Report from mPING: Street/road flooding;
Street/road closed; Vehicles stranded.
0936 PM Tstm Wnd Dmg 5 S Yuma 40.05N 102.72W
05/20/2024 Yuma CO Storm Chaser
Several power poles snapped near the
intersection of CR 33 and Hwy 59.
1015 PM Flash Flood 1 SSE Yuma 40.12N 102.72W
05/20/2024 Yuma CO Trained Spotter
Spotter reported that streets and basements
are flooding in the city of Yuma at 10:15 pm
MDT.
1025 PM Tornado 5 S Laird 40.00N 102.09W
05/20/2024 Yuma CO Trained Spotter
Report of a possible tornado near the
CO/KS/NE border viewed in lightning flashes
an estimated 7-8 miles northwest from Co Rd
Z and Co Rd 5 in Cheyenne county KS.
&&
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