Severe Thunderstorm Warning 290, NWS Denver/Boulder, CO

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Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1109 AM MDT Tue Sep 17 2024

COZ030>051-181715-
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-
1109 AM MDT Tue Sep 17 2024

...HIGH AND POTENTIALLY DAMAGING WINDS FROM SEVERE STORMS THIS
AFTERNOON...

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

.DAY ONE...This Afternoon and Tonight

A line of thunderstorms will race across the area this afternoon.
As this line of thunderstorms moves through, wind gusts of 40 to
60 mph are expected. Isolated wind gusts of 70 to 80 mph will be
possible with the stronger thunderstorms over the plains. The last
of the storms will move out of the far northeast corner of
Colorado by 7-8 mph. Impact will include significant danger to
boaters and outdoor water enthusiasts, who should get off the
water well before storms and gusty winds arrive. Scattered power
outages are also possible.

Breezy to windy conditions will likely linger over the higher
foothills and Front Range Mountains through the evening, while
other locations will see winds subside quickly behind the line of
storms.

Fire danger will be elevated due to very warm temperatures and
gusty winds on the plains ahead of the front.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Dry conditions and above normal temperatures are expected both
Wednesday and Thursday. This may lead to elevated fire weather
conditions. By Friday, isolated to scattered chances for storms and
showers return.

The next storm system arriving this weekend will bring cooler
unsettled weather to the region with rainfall on the plains and
the potential for accumulating snow across the higher Front Range
Mountains.

.SPOTTER INFORMATION STATEMENT...

Spotter are encouraged to provide any reports of severe wind gusts
or wind damage this afternoon.

Special Weather Statement
National Weather Service Denver CO
150 PM MDT Tue Sep 17 2024

COZ034-036-039>041-172015-
Elbert/Central and East Douglas Counties Above 6000 Feet CO-
South and Southeast Grand/West Central and Southwest
Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet CO-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County
CO-
North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe
Counties/East Broomfield County CO-
Jefferson and West Douglas Counties Above  6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet CO-
150 PM MDT Tue Sep 17 2024

...GUSTY SHOWERS WILL IMPACT CENTRAL DOUGLAS...NORTHEASTERN PARK...
SOUTHEASTERN CLEAR CREEK AND JEFFERSON COUNTIES THROUGH 215 PM MDT...

At 150 PM MDT, Doppler radar was tracking gusty showers along a line
extending from 3 miles west of Pine Junction to 4 miles north of
Deckers, or along a line extending from 75 miles southwest of Greeley
to 31 miles southwest of Denver. Movement was northeast at 35 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Southwestern Lakewood, Highlands Ranch, Littleton, Evergreen,
Roxborough Park, Morrison, Idledale, Conifer, Pine Junction, Tiny
Town, Chatfield Reservoir, Kittredge, Buffalo Creek, Devil's Head,
Sedalia, Aspen Park, Cheesman Reservoir, Deckers, Bailey, and Floyd
Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3979 10537 3948 10485 3913 10522 3937 10560
TIME...MOT...LOC 1950Z 209DEG 31KT 3946 10545 3931 10522

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

HIRIS

Special Weather Statement
National Weather Service Denver CO
207 PM MDT Tue Sep 17 2024

COZ035-036-038>040-043-172030-
Central and South Weld County CO-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County
CO-Larimer and Boulder Counties Between 6000 and 9000 Feet CO-
North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe
Counties/East Broomfield County CO-
Jefferson and West Douglas Counties Above  6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet CO-
Larimer County Below 6000 Feet/Northwest Weld County CO-
207 PM MDT Tue Sep 17 2024

...GUSTY SHOWERS WILL IMPACT SOUTHWESTERN WELD...BROOMFIELD...
SOUTHEASTERN LARIMER...NORTHERN JEFFERSON...NORTHWESTERN ADAMS AND
EASTERN BOULDER COUNTIES THROUGH 230 PM MDT...

At 206 PM MDT, Doppler radar was tracking gusty showers along a line
extending from near Cedar Cove to near Niwot to near White Ranch Open
Space, or along a line extending from 13 miles southwest of Fort
Collins to 74 miles west of Fort Morgan to 21 miles northwest of
Denver. Movement was northeast at 30 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Fort Collins, western Greeley, northern Thornton, northwestern
Arvada, Westminster, Boulder, Longmont, Loveland, Broomfield,
northwestern Northglenn, Lafayette, Windsor, Louisville, Erie,
Superior, Firestone, Johnstown, Frederick, Milliken, and Berthoud.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4029 10483 3993 10491 3978 10540 3988 10540
      3988 10538 3989 10540 4040 10540 4073 10489
TIME...MOT...LOC 2006Z 235DEG 25KT 4040 10524 4010 10520 3985 10532

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

HIRIS

Special Weather Statement
National Weather Service Denver CO
211 PM MDT Tue Sep 17 2024

COZ036-039>041-172045-
Elbert/Central and East Douglas Counties Above 6000 Feet CO-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County
CO-
North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe
Counties/East Broomfield County CO-
Jefferson and West Douglas Counties Above  6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet CO-
211 PM MDT Tue Sep 17 2024

...GUSTY SHOWERS WILL IMPACT NORTH CENTRAL DOUGLAS...WESTERN
ARAPAHOE...DENVER...NORTHERN JEFFERSON AND SOUTHWESTERN ADAMS
COUNTIES THROUGH 245 PM MDT...

At 210 PM MDT, Doppler radar was tracking gusty showers along a line
extending from near Bergen Park to 3 miles southeast of Morrison to
near Louviers, or along a line extending from 57 miles southwest of
Greeley to 13 miles southwest of Denver to 44 miles north of Colorado
Springs. Movement was north at 30 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Denver, southwestern Aurora, Lakewood, southwestern Thornton, Arvada,
Westminster, Centennial, southwestern Broomfield, Highlands Ranch,
southwestern Commerce City, northwestern Parker, Littleton,
southwestern Northglenn, Englewood, Wheat Ridge, Golden, Greenwood
Village, Evergreen, Federal Heights, and Lone Tree.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3953 10517 3969 10543 3992 10533 3992 10523
      3993 10524 3993 10528 3995 10527 3987 10493
      3966 10469 3933 10501
TIME...MOT...LOC 2010Z 201DEG 26KT 3972 10533 3960 10514 3946 10503

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

HIRIS

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