Alert archive / Colorado / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 56, NWS Denver/Boulder, CO

June 29, 2022Larimer County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 29, 2022, 1:15 PM MDT for Larimer County, Colorado. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 29, 2022, 1:15 PM MDT (19:15 UTC)
Expired: Jun 29, 2022, 1:45 PM MDT
In force: 30 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Larimer County, CO

The radar

The Cheyenne radar (KCYS), 77 km from the middle of the area, began a volume at 19:15 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 29, 12:29 PM MDT, 46 minutes earlier.

Area forecast discussion, Jun 29, 12:29 PM MDT, 46 minutes before

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Hazardous weather outlook, Jun 29, 10:46 AM MDT, 2 hours 29 minutes before

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1046 AM MDT Wed Jun 29 2022

COZ030>051-301700-
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-
1046 AM MDT Wed Jun 29 2022

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

.DAY ONE...Today and Tonight

High temperatures will likely exceed 100 F in our northeast
corner (in and around Logan, Phillips and Sedgwick Counties) with
highs in the mid 90 to upper 90s for the rest of the plains and
I-25 corridor.

Expect critical fire weather conditions across much of the plains
of northeast Colorado this afternoon due to low humidity and
gusty winds. We have added Morgan County, northern Logan County
and Elbert County below 6000 feet to our Red Flag Warning and
otherwise maintained it for much of our plains from 11 am to 7 pm.

There will be greater coverage and intensity of showers and
storms, best in the late afternoon and early evening, scattered to
widespread over the high country and more isolated over the
plains. Storms may bring lightning, erratic gusts, small hail, and
brief moderate rains through the evening. There is a limited
threat of burn area flash flooding across the northern mountains.
Elsewhere, lesser coverage and intensity of precipitation should
keep the threat lower.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Precipitation chances will increase in coverage and intensity on
Thursday and Friday with a limited threat of burn area flash
flooding. Showers and thunderstorms will be most numerous over the
mountains and Palmer Divide with heavy rain and gusty winds the
main impacts. Temperatures will be cooler on Thursday and Friday.

Over the Fourth of July weekend, expect a warming trend with a
continued chance for showers and thunderstorms during the
afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

In the hours before

Special weather statement, Jun 29, 1:06 PM MDT, 9 minutes before

Special Weather Statement
National Weather Service Denver CO
106 PM MDT Wed Jun 29 2022

COZ033-035-291930-
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-
106 PM MDT Wed Jun 29 2022

...Strong thunderstorms will impact portions of central Larimer and
northeastern Grand Counties through 130 PM MDT...

At 104 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles southeast of Woods Landing-Jelm to 5
miles west of Longs Peak, or along a line extending from 27 miles
southwest of Laramie to 40 miles southwest of Fort Collins. Movement
was east at 20 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...
Estes Park, Trail Ridge, Bear Lake, Pennock Pass, Glen Haven, Four
Corners, Red Feather Lakes, Rustic, Longs Peak, Chambers Lake,
Kinikinik and Pingree Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If on or near a lake, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

&&

LAT...LON 4100 10554 4027 10540 4024 10576 4100 10597
TIME...MOT...LOC 1904Z 249DEG 15KT 4103 10595 4025 10572

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

RPK

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 1:06 PM MDT	Special Weather Statement	BOU	Larimer	24 min
Jun 29, 1:44 PM MDT	Special Weather Statement	BOU	Larimer	31 min
Jun 29, 5:52 PM MDT	Areal Flood Advisory	BOU	Jackson	83 min
Jun 29, 5:57 PM MDT	Areal Flood Advisory	BOU	Grand	2 hr

Nearby

Severe Thunderstorm Warnings in Colorado, 2022 Every severe thunderstorm warning in 2022

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.