#BOU #COwx 754
WFUS55 KBOU 212322
TORBOU
COC073-121-220000-
/O.NEW.KBOU.TO.W.0002.260521T2322Z-260522T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
522 PM MDT Thu May 21 2026

The National Weather Service in Denver has issued a

* Tornado Warning for...
Northeastern Lincoln County in east central Colorado...
South Central Washington County in northeastern Colorado...

* Until 600 PM MDT.

* At 522 PM MDT, a severe th https://mesonet.agron.iastate.edu/vtec/f/2026-O-NEW-KBOU-TO-W-0002_2026-05-21T23:22Z

#BOU #COwx 114
NWUS55 KBOU 212319
LSRBOU

Preliminary Local Storm Report
National Weather Service Denver CO
519 PM MDT Thu May 21 2026

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0506 PM Hail 5 SSE Last Chance 39.67N 103.53W
05/21/2026 M2.50 Inch Washington CO Trained Spotter

&&

$$
https://mesonet.agron.iastate.edu/lsr/?by=wfo&wfo=BOU&sts=202605212306&ets=202605212306

#BOU #COwx 291
ACUS11 KWNS 212316
SWOMCD
SPC MCD 212316
KSZ000-COZ000-NEZ000-220115-

Mesoscale Discussion 0821
NWS Storm Prediction Center Norman OK
0616 PM CDT Thu May 21 2026

Areas affected...parts of southwestern Nebraska...northeast and east
central Colorado...adjacent northwestern Kansas

Concerning...Severe Thunderstorm Watch 239...

Valid 212316Z - 220115Z

The severe weather threat for Severe Thunderstorm Watch 239
continues.

SUMMARY...Isolated to widely sc https://www.spc.noaa.gov/products/md/2026/md0821.html

#BOU #COwx 615
WWUS55 KBOU 212311
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
511 PM MDT Thu May 21 2026

COC073-121-212330-
/O.CON.KBOU.TO.W.0001.000000T0000Z-260521T2330Z/
Lincoln CO-Washington CO-
511 PM MDT Thu May 21 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM MDT FOR NORTH
CENTRAL LINCOLN AND SOUTH CENTRAL WASHINGTON COUNTIES...

At 511 PM MDT, a severe thunderstorm capable of producing a tornado
was located 8 miles south of Li https://mesonet.agron.iastate.edu/vtec/f/2026-O-CON-KBOU-TO-W-0001_2026-05-21T23:11Z

#BOU #COwx 809
NWUS55 KBOU 212311
LSRBOU

Preliminary Local Storm Report
National Weather Service Denver CO
511 PM MDT Thu May 21 2026

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0450 PM Hail 5 S Last Chance 39.65N 103.59W
05/21/2026 E1.00 Inch Washington CO Storm Chaser

Report from mPING: Quarter https://mesonet.agron.iastate.edu/lsr/?by=wfo&wfo=BOU&sts=202605212250&ets=202605212250

#NWS #tornado Tornado Warning for Lincoln, CO; Washington, CO #COwx
At 502 PM MDT, a severe thunderstorm capable of producing a tornado
was located 9 miles southeast of Last Chance, or 27 miles north of
Limon, moving east at 20 mph.

HAZARD...Tornado and golf ball size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows and vehicles will occur. Tree damage is
likely.

Locations impacted include...
Mainly rural areas of North Central Lincoln and Southwestern
Washington Counties.

https://forecast.weather.gov/MapClick.php?lon=-103.477&lat=39.616

#BOU #COwx 305
NWUS55 KBOU 212310
LSRBOU

Preliminary Local Storm Report
National Weather Service Denver CO
510 PM MDT Thu May 21 2026

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0458 PM Hail 7 S Last Chance 39.62N 103.59W
05/21/2026 M1.75 Inch Washington CO Storm Chaser

Report from mPING: Golf Ba https://mesonet.agron.iastate.edu/lsr/?by=wfo&wfo=BOU&sts=202605212258&ets=202605212258

#BOU #COwx 858
WWUS55 KBOU 212302
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
502 PM MDT Thu May 21 2026

COC073-121-212330-
/O.CON.KBOU.TO.W.0001.000000T0000Z-260521T2330Z/
Lincoln CO-Washington CO-
502 PM MDT Thu May 21 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM MDT FOR NORTH
CENTRAL LINCOLN AND SOUTHWESTERN WASHINGTON COUNTIES...

At 502 PM MDT, a severe thunderstorm capable of producing a tornado
was located 9 miles southeast of https://mesonet.agron.iastate.edu/vtec/f/2026-O-CON-KBOU-TO-W-0001_2026-05-21T23:02Z

#BOU #COwx 784
WWUS55 KBOU 212257
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
457 PM MDT Thu May 21 2026

COC075-212307-
/O.EXP.KBOU.SV.W.0017.000000T0000Z-260521T2300Z/
Logan CO-
457 PM MDT Thu May 21 2026

...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 5 PM MDT FOR CENTRAL
LOGAN COUNTY...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning wi https://mesonet.agron.iastate.edu/vtec/f/2026-O-EXP-KBOU-SV-W-0017_2026-05-21T22:57Z