Special Weather Statement, NWS Denver/Boulder, CO

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Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
808 AM MDT Sun Jul 20 2025

COZ030>051-211415-
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-
808 AM MDT Sun Jul 20 2025

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

.DAY ONE...Today and Tonight

Warmer and drier conditions are expected today with less
shower/storm coverage. Isolated to scattered showers and storms
are still expected, mainly along the Front Range mountains,
foothills, and Palmer Divide. A few stronger storms may develop
where greater instability and shear is expected, along our eastern
most counties.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

We will see a steady increase in moisture starting Monday, with
increasing afternoon shower and storm coverage each day across
the forecast area. Temperatures will remain in the 90s across the
plains through the first half of the week, with a very slight cool
down by mid-week. Moisture will peak Wednesday, as PWAT values
increase to between 120% to 160% of normal, which would support
heavier rainfall chances. Another warming trend starts Friday,
with temperatures in the upper 90s along the urban corridor and
lower elevations by Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

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Special Weather Statement
National Weather Service Denver CO
621 PM MDT Sun Jul 20 2025

COZ046-210100-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County CO-
621 PM MDT Sun Jul 20 2025

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN LINCOLN COUNTY
UNTIL 7 PM MDT...

At 621 PM MDT, Doppler radar was tracking a strong thunderstorm near
Arriba, or 20 miles east of Limon, moving northeast at 10 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...
  Arriba.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If outdoors, consider seeking shelter inside a building.

Heavy rain is occurring with this storm and may lead to flooding. Do
not drive your vehicle through flooded roadways.

&&

LAT...LON 3919 10332 3935 10345 3948 10325 3938 10316
      3930 10316
TIME...MOT...LOC 0021Z 225DEG 7KT 3930 10332

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

RPK