#BOU #COwx 511
WWUS85 KBOU 210241
SPSBOU

Special Weather Statement
National Weather Service Denver CO
841 PM MDT Sat Jun 20 2026

COZ048-210330-
Logan County CO-
841 PM MDT Sat Jun 20 2026

...A STRONG THUNDERSTORM WILL IMPACT WEST CENTRAL LOGAN COUNTY UNTIL
930 PM MDT...

At 841 PM MDT, Doppler radar was tracking a strong thunderstorm 8
miles south of Westplains, or 17 miles northwest of Sterling, moving
east at 25 mph.

HAZARD...Wind gusts up to 50 mph and penny siz https://mesonet.agron.iastate.edu/p.php?pid=202606210241-KBOU-WWUS85-SPSBOU

IEM :: SPS from NWS BOU

SPS issued by NWS BOU at 21 Jun 2026 02:41 UTC

#BOU #COwx 085
WWUS55 KBOU 210240
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
840 PM MDT Sat Jun 20 2026

COC123-210300-
/O.CON.KBOU.SV.W.0100.000000T0000Z-260621T0300Z/
Weld CO-
840 PM MDT Sat Jun 20 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT FOR
NORTH CENTRAL WELD COUNTY...

At 840 PM MDT, a severe thunderstorm was located 6 miles north of
Pawnee Buttes, or 46 miles north of Fort Morgan, moving east at 25
mph.

HAZAR https://mesonet.agron.iastate.edu/vtec/f/2026-O-CON-KBOU-SV-W-0100_2026-06-21T02:40Z

KBOU Severe Thunderstorm Warning #100

Weld

Iowa Environmental Mesonet

#BOU #COwx 243
NWUS55 KBOU 210231
LSRBOU

Preliminary Local Storm Report
National Weather Service Denver CO
831 PM MDT Sat Jun 20 2026

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

0821 PM Hail 8 NE Grover 40.96N 104.12W
06/20/2026 E1.25 Inch Weld CO Public

Report from mPING: Half Do https://mesonet.agron.iastate.edu/lsr/?by=wfo&wfo=BOU&sts=202606210221&ets=202606210221

IEM LSR App

#BOU #COwx 726
WWUS55 KBOU 210227
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
827 PM MDT Sat Jun 20 2026

COC123-210237-
/O.EXP.KBOU.SV.W.0099.000000T0000Z-260621T0230Z/
Weld CO-
827 PM MDT Sat Jun 20 2026

...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 830 PM MDT FOR
NORTHEASTERN WELD 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 warni https://mesonet.agron.iastate.edu/vtec/f/2026-O-EXP-KBOU-SV-W-0099_2026-06-21T02:27Z

KBOU Severe Thunderstorm Warning #99

Weld

Iowa Environmental Mesonet

#BOU #COwx 516
WUUS55 KBOU 210226
SVRBOU
COC123-210300-
/O.NEW.KBOU.SV.W.0100.260621T0226Z-260621T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
826 PM MDT Sat Jun 20 2026

The National Weather Service in Denver has issued a

* Severe Thunderstorm Warning for...
North Central Weld County in northeastern Colorado...

* Until 900 PM MDT.

* At 826 PM MDT, a severe thunderstorm was located 7 miles northeas https://mesonet.agron.iastate.edu/vtec/f/2026-O-NEW-KBOU-SV-W-0100_2026-06-21T02:26Z

KBOU Severe Thunderstorm Warning #100

Weld

Iowa Environmental Mesonet

#BOU #COwx 286
WWUS55 KBOU 210212
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
812 PM MDT Sat Jun 20 2026

COC123-210230-
/O.CON.KBOU.SV.W.0099.000000T0000Z-260621T0230Z/
Weld CO-
812 PM MDT Sat Jun 20 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM MDT FOR
NORTHEASTERN WELD COUNTY...

At 812 PM MDT, a severe thunderstorm was located 13 miles northeast
of Pawnee Buttes, or 35 miles northwest of Sterling, moving east at
25 mph. https://mesonet.agron.iastate.edu/vtec/f/2026-O-CON-KBOU-SV-W-0099_2026-06-21T02:12Z

KBOU Severe Thunderstorm Warning #99

Weld

Iowa Environmental Mesonet

#BOU #COwx 844
WWUS55 KBOU 210205
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
805 PM MDT Sat Jun 20 2026

COC123-210230-
/O.CON.KBOU.SV.W.0098.000000T0000Z-260621T0230Z/
Weld CO-
805 PM MDT Sat Jun 20 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM MDT FOR
NORTH CENTRAL WELD COUNTY...

At 805 PM MDT, a severe thunderstorm was located near Hereford, or 46
miles northeast of Greeley, moving east at 25 mph.

HAZARD...60 mph wind https://mesonet.agron.iastate.edu/vtec/f/2026-O-CON-KBOU-SV-W-0098_2026-06-21T02:05Z

KBOU Severe Thunderstorm Warning #98

Weld

Iowa Environmental Mesonet

#BOU #COwx 195
WWUS55 KBOU 210203
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
803 PM MDT Sat Jun 20 2026

COC123-210213-
/O.CAN.KBOU.TO.W.0017.000000T0000Z-260621T0215Z/
Weld CO-
803 PM MDT Sat Jun 20 2026

...TORNADO WARNING IS CANCELLED FOR NORTH CENTRAL WELD COUNTY...

The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

&&

LAT...LON 4089 10410 4100 10408 4100 10385 4088 10387
TIME...MOT https://mesonet.agron.iastate.edu/vtec/f/2026-O-CAN-KBOU-TO-W-0017_2026-06-21T02:03Z

KBOU Tornado Warning #17

Weld

Iowa Environmental Mesonet

#BOU #COwx 950
WUUS55 KBOU 210203
SVRBOU
COC123-210230-
/O.NEW.KBOU.SV.W.0099.260621T0203Z-260621T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
803 PM MDT Sat Jun 20 2026

The National Weather Service in Denver has issued a

* Severe Thunderstorm Warning for...
Northeastern Weld County in northeastern Colorado...

* Until 830 PM MDT.

* At 803 PM MDT, a severe thunderstorm was located 10 miles northeas https://mesonet.agron.iastate.edu/vtec/f/2026-O-NEW-KBOU-SV-W-0099_2026-06-21T02:03Z

KBOU Severe Thunderstorm Warning #99

Weld

Iowa Environmental Mesonet

Current conditions for Longmont, CO:

Clear
Temperature is 83°F
West wind at 22 mph gusting to 33 mph
Dewpoint is 59°F
Relative humidity is 43%

#longmont #cowx