Alert archive / Colorado / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 84, NWS Denver/Boulder, CO

July 8, 2022Lincoln County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 8, 2022, 7:25 PM MDT for Lincoln County, Colorado. It was in force for 31 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
Jul 8, 2022, 7:25 PM MDT (01:25 UTC)
Expired
Jul 8, 2022, 7:56 PM MDT
In force
31 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

County Lincoln County, CO

The radar

The Pueblo radar (KPUX), 82 km from the middle of the area, began a volume at 01:26 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.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.4 hours before the alert went out and 344 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2022-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1392 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2022-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -62 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1392 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
2107 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-62 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

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 Jul 8, 7:09 PM MDT, 16 minutes earlier.

Area forecast discussion, Jul 8, 7:09 PM MDT, 16 minutes before
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Hazardous weather outlook, Jul 8, 10:22 AM MDT, 9 hours 3 minutes before
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1022 AM MDT Fri Jul 8 2022

COZ030>051-091630-
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-
1022 AM MDT Fri Jul 8 2022

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

.DAY ONE...Today and Tonight

Warmer temperatures expected today with highs in the 90s for the
lower elevations. Isolated to scattered showers/thunderstorms
develop in the afternoon, with the best chances over the plains.
The environment supports potential for a few strong to severe
storms over the east plains with gusty winds up to 60 mph being
the primary threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

This weekend near record-breaking heat will occur in the afternoon
and overnight hours across the region. Temperatures will trend 5-10
degrees above normal for the highs and lows both Saturday and
Sunday. The urban corridor and plains will trend near the upper
90s to lower 100s. Mountains and valleys will reach the lower 70s
to lower 80s. Thunderstorm chances decrease through the weekend.
By Monday, a cold front will decrease temperatures to near normal
and increase thunderstorm chances through mid next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

In the hours before

Special weather statement, Jul 8, 4:37 PM MDT, 2 hours 48 minutes before
Special Weather Statement
National Weather Service Denver CO
437 PM MDT Fri Jul 8 2022

COZ035-082300-
Larimer and Boulder Counties Between 6000 and 9000 Feet CO-
437 PM MDT Fri Jul 8 2022

...A strong thunderstorm will impact portions of north central
Larimer County through 500 PM MDT...

At 436 PM MDT, Doppler radar was tracking a strong thunderstorm near
Red Feather Lakes, or 29 miles northwest of Fort Collins, moving
south at 10 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Red Feather Lakes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4087 10553 4089 10540 4070 10531 4073 10558
TIME...MOT...LOC 2236Z 000DEG 8KT 4083 10548

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

BARJENBRUCH
Special weather statement, Jul 8, 4:45 PM MDT, 2 hours 40 minutes before
Special Weather Statement
National Weather Service Denver CO
445 PM MDT Fri Jul 8 2022

COZ036-082315-
Jefferson and West Douglas Counties Above  6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet CO-
445 PM MDT Fri Jul 8 2022

...A strong thunderstorm will impact portions of eastern Gilpin
County through 515 PM MDT...

At 443 PM MDT, Doppler radar was tracking a strong thunderstorm over
Aspen Springs, or 29 miles west of Denver, moving south at 5 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Central City, Black Hawk and Rollinsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3984 10551 3981 10544 3979 10540 3981 10540
      3982 10545 3989 10548 3990 10553 3993 10550
      3991 10543 3988 10546 3984 10542 3987 10540
      3982 10537 3975 10540 3975 10550 3977 10549
      3978 10552 3981 10553
TIME...MOT...LOC 2243Z 017DEG 6KT 3984 10548

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

BARJENBRUCH
Special weather statement, Jul 8, 4:45 PM MDT, 2 hours 40 minutes before
Special Weather Statement
National Weather Service Denver CO
445 PM MDT Fri Jul 8 2022

COZ034-036-082315-
South and Southeast Grand/West Central and Southwest
Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet CO-
Jefferson and West Douglas Counties Above  6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet CO-
445 PM MDT Fri Jul 8 2022

...A strong thunderstorm will impact portions of Gilpin and
northwestern Jefferson Counties through 515 PM MDT...

At 444 PM MDT, Doppler radar was tracking a strong thunderstorm over
Aspen Springs, or 29 miles west of Denver, moving south at 5 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock small tree branches and blow around
         unsecured objects.

Locations impacted include...
Central City, Black Hawk, Rollinsville and Aspen Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3990 10556 3991 10554 3992 10555 3993 10550
      3993 10540 3991 10539 3991 10537 3977 10536
      3975 10540 3975 10550 3976 10554 3982 10557
TIME...MOT...LOC 2244Z 017DEG 6KT 3984 10548

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

BARJENBRUCH
Special weather statement, Jul 8, 5:05 PM MDT, 2 hours 20 minutes before
Special Weather Statement
National Weather Service Denver CO
505 PM MDT Fri Jul 8 2022

COZ044-045-049-082330-
Washington County CO-Morgan County CO-
Central and East Adams and Arapahoe Counties CO-
505 PM MDT Fri Jul 8 2022

...Strong thunderstorms will impact portions of southeastern Morgan,
central Washington and northeastern Adams Counties through 530 PM
MDT...

At 504 PM MDT, Doppler radar was tracking strong thunderstorms
scattered along a line extending from 6 miles south of Twelve-Mile
Corner to 8 miles north of Arickaree School, or along a line
extending from 19 miles south of Fort Morgan to 22 miles southeast
of Akron. Movement was south at 5 mph.

HAZARD...Winds in excess of 40 mph and penny size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Elba and Woodrow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4003 10337 4013 10301 3990 10294 3978 10302
      3990 10377 4002 10382
TIME...MOT...LOC 2304Z 339DEG 6KT 3998 10376 3988 10303

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

BARJENBRUCH
Local storm report, Jul 8, 5:43 PM MDT, 1 hour 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DENVER CO
543 PM MDT FRI JUL 8 2022

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

0534 PM     HAIL             8 S PLATNER             40.04N 103.07W
07/08/2022  E1.50 INCH       WASHINGTON         CO   TRAINED SPOTTER

&&

STARK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 6:00 PM MDTSevere Thunderstorm WarningBOUWashington45 min
Jul 8, 6:25 PM MDTSevere Thunderstorm WarningBOUWashington35 min
Jul 8, 6:32 PM MDTFlash Flood WarningBOULarimer78 min
Jul 8, 6:53 PM MDTSevere Thunderstorm WarningBOULincoln52 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2022Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.