Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 111, NWS Denver/Boulder, CO

July 16, 2021Lincoln County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 16, 2021, 6:14 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 outline as issued.

The facts

Issued: Jul 16, 2021, 6:14 PM MDT (00:14 UTC)
Expired: Jul 16, 2021, 6:45 PM MDT
In force: 31 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Lincoln County, CO

The radar

The Pueblo radar (KPUX), 92 km from the middle of the area, began a volume at 00:18 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

Denver, CO (KDNR), launched 00:00Z, 0.2 hours before the alert went out and 116 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 12 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 3284 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: -9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

449 
WUUS55 KBOU 170014
SVRBOU
COC073-170045-
/O.NEW.KBOU.SV.W.0111.210717T0014Z-210717T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
614 PM MDT Fri Jul 16 2021

The National Weather Service in Denver Colorado has issued a

* Severe Thunderstorm Warning for...
  East central Lincoln County in east central Colorado...

* Until 645 PM MDT.

* At 613 PM MDT, a severe thunderstorm was located 6 miles southeast
  of Boyero, or 31 miles south of Flagler, moving southwest at 15
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  east central Lincoln County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3885 10336 3894 10317 3888 10316 3875 10316
      3869 10322
TIME...MOT...LOC 0013Z 027DEG 12KT 3886 10319 

HAIL...<.75IN
WIND...60MPH
 
$$

ENTREKIN

1 follow-up statement

414 
WWUS55 KBOU 170036
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
636 PM MDT Fri Jul 16 2021

COC073-170045-
/O.CON.KBOU.SV.W.0111.000000T0000Z-210717T0045Z/
Lincoln CO-
636 PM MDT Fri Jul 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR EAST CENTRAL LINCOLN COUNTY...

At 636 PM MDT, a severe thunderstorm was located 9 miles south of
Boyero, or 35 miles south of Flagler, moving south at 10 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees. Hail damage to 
         vehicles is expected.

This severe thunderstorm will remain over mainly rural areas of east
central Lincoln County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3885 10331 3891 10317 3888 10316 3875 10316
      3869 10322
TIME...MOT...LOC 0036Z 018DEG 11KT 3880 10320 

HAIL...1.00IN
WIND...60MPH
 
$$

ENTREKIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 6:05 PM MDT	Areal Flood Advisory	BOU	Washington	115 min
Jul 16, 7:09 PM MDT	Areal Flood Advisory	BOU	Lincoln	81 min
Jul 17, 3:41 PM MDT	Special Weather Statement	BOU	Park	34 min
Jul 17, 4:11 PM MDT	Special Weather Statement	BOU	Elbert	34 min
Jul 17, 4:43 PM MDT	Special Weather Statement	BOU	Elbert	32 min
Jul 17, 5:09 PM MDT	Special Weather Statement	BOU	Weld	36 min
Jul 17, 5:34 PM MDT	Special Weather Statement	BOU	Weld	26 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2021 Every severe thunderstorm warning in 2021

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.