Alert archive / Colorado / Special Weather Statements in 2023

Special Weather Statement, NWS Denver/Boulder, CO

August 6, 2023Lincoln County, Colorado

NWS Denver/Boulder, CO issued this special weather statement at Aug 6, 2023, 11:18 PM MDT for Lincoln County, Colorado. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 6, 2023, 11:18 PM MDT (05:18 UTC)
Expired
Aug 6, 2023, 11:45 PM MDT
In force
27 min
Issued by
NWS Denver/Boulder, CO
Hail
0.88 in
Wind
50

County Lincoln County, CO

The radar

The Pueblo radar (KPUX), 38 km from the middle of the area, began a volume at 05:20 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

Grand Junction, CO (KGJT), launched 00:00Z, 5.3 hours before the alert went out and 400 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, Grand Junction, CO at 00:00Z on 2023-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Grand Junction, CO at 00:00Z on 2023-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
5232 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 6, 8:47 PM MDT, 2 hours 31 minutes earlier.

Area forecast discussion, Aug 6, 8:47 PM MDT, 2 hours 31 minutes before
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Hazardous weather outlook, Aug 6, 11:26 AM MDT, 11 hours 52 minutes before
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1126 AM MDT Sun Aug 6 2023

COZ030>051-071730-
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-
1126 AM MDT Sun Aug 6 2023

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

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms will occur over the mountains
and foothills this afternoon and over the Palmer Divide by mid
afternoon. A couple of the storms could produce large hail and
damaging wind gusts, especially over the Palmer Divide. The threat
of flash flooding will remain very limited and mainly over the
burn areas.

Over the plains, isolated to scattered showers and thunderstorms
are expected this evening. Strong wind gusts are possible with the
storms.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Scattered afternoon thunderstorms can be expected Monday and
Tuesday, and a few storms could be severe especially east of the
I-25 Corridor. Large hail and damaging winds would be the main
threats.

Drier conditions are expected Wednesday. Scattered showers and a
few storms could redevelop later in the week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

In the hours before

Special weather statement, Aug 6, 6:02 PM MDT, 5 hours 16 minutes before
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Local storm report, Aug 6, 7:03 PM MDT, 4 hours 15 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Denver CO
703 PM MDT Sun Aug 6 2023

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

0650 PM     Hail             6 SSE Castlewood Canyon 39.27N 104.74W
08/06/2023  M1.00 inch       Douglas            CO   Trained Spotter

0649 PM     Hail             5 SSW Castle Rock       39.30N 104.88W
08/06/2023  E0.75 inch       Douglas            CO   Public

            Report from mPING: Dime (0.75 in.).

0450 PM     Hail             2 WNW Pennock Pass      40.59N 105.55W
08/06/2023  M1.00 inch       Larimer            CO   Trained Spotter

0358 PM     Hail             1 WNW Foxfield          39.60N 104.82W
08/06/2023  E0.75 inch       Arapahoe           CO   Public

            Report from mPING: Dime (0.75 in.).

0355 PM     Hail             2 E Highlands Ranch     39.56N 104.92W
08/06/2023  M1.00 inch       Douglas            CO   Trained Spotter

0347 PM     Hail             2 WNW Lone Tree         39.55N 104.92W
08/06/2023  E0.88 inch       Douglas            CO   Public

0334 PM     Hail             1 SSW Westminster       39.87N 105.06W
08/06/2023  E0.75 inch       Jefferson          CO   Public

            Report from mPING: Dime (0.75 in.).

0319 PM     Hail             2 SSW Rocky Flats       39.87N 105.21W
08/06/2023  M0.88 inch       Jefferson          CO   Trained Spotter

&&
Special weather statement, Aug 6, 7:03 PM MDT, 4 hours 15 minutes before
Special Weather Statement
National Weather Service Denver CO
703 PM MDT Sun Aug 6 2023

COZ041-046-070145-
Elbert/Central and East Douglas Counties Above 6000 Feet CO-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County CO-
703 PM MDT Sun Aug 6 2023

...Strong thunderstorms will impact portions of southeastern Douglas
and central Elbert Counties through 745 PM MDT...

At 702 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 11 miles north of Ramah to 6 miles south of
Elizabeth, or along a line extending from 28 miles west of Limon to
29 miles north of Colorado Springs. Movement was east at 40 mph.

HAZARD...Penny size hail and brief heavy rainfall.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Elbert, Elizabeth, Kiowa, Simla, Matheson and Ponderosa Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

These storms 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 3908 10405 3913 10406 3913 10458 3915 10481
      3937 10479 3937 10381 3910 10381 3910 10391
      3908 10391 3908 10393 3907 10391 3906 10393
TIME...MOT...LOC 0102Z 278DEG 35KT 3928 10422 3928 10463

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...<30 MPH

COOPER
Special weather statement, Aug 6, 8:40 PM MDT, 2 hours 38 minutes before
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Special weather statement, Aug 6, 9:35 PM MDT, 1 hour 43 minutes before
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Special weather statement, Aug 6, 11:18 PM MDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 6:02 PM MDTSpecial Weather StatementBOUBoulder28 min
Aug 6, 7:03 PM MDTSpecial Weather StatementBOUElbert42 min
Aug 6, 7:14 PM MDTSevere Thunderstorm WarningBOUElbert31 min
Aug 6, 8:40 PM MDTSpecial Weather StatementBOUPark50 min
Aug 6, 9:35 PM MDTSpecial Weather StatementBOUDouglas40 min
Aug 6, 11:45 PM MDTSpecial Weather StatementBOUCrowley30 min
Aug 7, 1:22 PM MDTSpecial Weather StatementBOUWeld53 min
Aug 7, 1:33 PM MDTSevere Thunderstorm WarningBOUWeld42 min
Aug 7, 1:55 PM MDTSpecial Weather StatementBOUWeld35 min
Aug 7, 2:07 PM MDTSevere Thunderstorm WarningBOUMorgan, Weld38 min
Aug 7, 2:26 PM MDTSevere Thunderstorm Warning Considerable damage threatBOULogan, Weld49 min
Aug 7, 2:39 PM MDTSevere Thunderstorm WarningBOUJackson, Larimer51 min
Aug 7, 2:57 PM MDTSevere Thunderstorm WarningBOULogan, Morgan, Washington26 min
Aug 7, 3:35 PM MDTSevere Thunderstorm WarningBOUWashington40 min
Aug 7, 3:49 PM MDTAreal Flood AdvisoryBOUGrand40 min
Aug 7, 3:57 PM MDTSevere Thunderstorm WarningBOUWashington29 min

Nearby

Special Weather Statements in Colorado, 2023Every special weather statement in 2023

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.