Severe Thunderstorm Warning 188, NWS Denver/Boulder, CO

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Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
939 AM MDT Sun Jun 29 2025

COZ030>051-301545-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
939 AM MDT Sun Jun 29 2025

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Strong to severe storms are expected to form this afternoon and
evening across the I-25 corridor and eastern plains. Large hail
and damaging wind gusts are the primary threats. There is a small
chance that overnight (2-6AM) storms form that could become
strong to severe across the far eastern plains.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms with heavy rainfall are possible over the southern
foothills and Park County on Monday. Tuesday and Wednesday look
to be warmer with isolated storms over the higher terrain.
Thursday and the Fourth of July look to be wet with scattered to
widespread afternoon showers and storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed today across the I-25 corridor
and eastern plains.

Special Weather Statement
National Weather Service Denver CO
224 PM MDT Sun Jun 29 2025

COZ033-035-292115-
Larimer and Boulder Counties Between 6000 and 9000 Feet CO-South
and East Jackson/Larimer/North and Northeast Grand/Northwest
Boulder Counties Above 9000 Feet CO-
224 PM MDT Sun Jun 29 2025

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL LARIMER COUNTY UNTIL
315 PM MDT...

At 224 PM MDT, Doppler radar was tracking a strong thunderstorm over
Rustic, or 26 miles west of Fort Collins, moving southeast at 15 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is possible.

Locations impacted include...
  Stove Prairie, Pennock Pass, Buckhorn Mountain, Mishawaka, Pingree
  Park and Rustic.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional
information and possible warnings from the National Weather Service.

&&

LAT...LON 4062 10567 4074 10556 4066 10523 4065 10524
      4065 10523 4064 10523 4064 10522 4063 10522
      4063 10523 4062 10522 4062 10521 4061 10521
      4040 10537
TIME...MOT...LOC 2024Z 304DEG 11KT 4067 10555

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

Hiris

Special Weather Statement
National Weather Service Denver CO
254 PM MDT Sun Jun 29 2025

COZ035-039-292130-
Larimer and Boulder Counties Between 6000 and 9000 Feet CO-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County CO-
254 PM MDT Sun Jun 29 2025

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN JEFFERSON AND
SOUTHEASTERN BOULDER COUNTIES UNTIL 330 PM MDT...

At 254 PM MDT, Doppler radar was tracking a strong thunderstorm over
Gold Hill, or 36 miles northwest of Denver, moving southeast at 10
mph.

HAZARD...Wind gusts up to 50 mph and half inch size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is possible.

Locations impacted include...
  Western Boulder, Nederland, Jamestown, Wallstreet, Crisman,
  Salina, Summerville, Sunshine, Gold Hill and Crescent Village.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional
information and possible warnings from the National Weather Service.

&&

LAT...LON 4010 10550 4012 10548 4011 10520 3991 10532
      3991 10540 3993 10540 3993 10542 3994 10544
      3993 10546 4000 10554 4002 10552 4002 10550
      4003 10549 4003 10551 4005 10549 4006 10551
      4006 10550 4008 10549 4008 10547
TIME...MOT...LOC 2054Z 300DEG 8KT 4006 10546

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

Hiris

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