Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 56, NWS Denver/Boulder, CO

May 29, 2021Lincoln County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 29, 2021, 5:16 PM MDT for Lincoln County, Colorado. It was in force for 29 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 29, 2021, 5:16 PM MDT (23:16 UTC)
Expired: May 29, 2021, 5:45 PM MDT
In force: 29 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Lincoln County, CO

The radar

The Pueblo radar (KPUX), 84 km from the middle of the area, began a volume at 23:20 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.

What was reported inside it

Time	Report	Where	Remark
May 29, 5:27 PM MDT	HAIL 1	9 Nne Karval, CO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 29, 1:48 PM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.3 hours before the alert went out and 106 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2325 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -78 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

813 
WUUS55 KBOU 292316
SVRBOU
COC073-292345-
/O.NEW.KBOU.SV.W.0056.210529T2316Z-210529T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
516 PM MDT Sat May 29 2021

The National Weather Service in Denver Colorado has issued a

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

* Until 545 PM MDT.

* At 515 PM MDT, a severe thunderstorm was located 6 miles west of
  Boyero, or 29 miles southeast of Limon, moving northeast at 15 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Boyero.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 PM MDT for east central
Colorado.

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

&&

LAT...LON 3883 10365 3909 10347 3904 10316 3884 10316
TIME...MOT...LOC 2315Z 216DEG 14KT 3891 10339 

HAIL...1.00IN
WIND...<50MPH
 
$$

SCHLATTER

1 follow-up statement

488 
WWUS55 KBOU 292344
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
544 PM MDT Sat May 29 2021

COC073-292354-
/O.EXP.KBOU.SV.W.0056.000000T0000Z-210529T2345Z/
Lincoln CO-
544 PM MDT Sat May 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LINCOLN COUNTY
WILL EXPIRE AT 545 PM MDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
is still possible with this thunderstorm.

A Tornado Watch remains in effect until 900 PM MDT for east central
Colorado.

LAT...LON 3883 10365 3909 10347 3904 10316 3884 10316
TIME...MOT...LOC 2344Z 216DEG 14KT 3866 10370 

$$

SCHLATTER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 6:20 AM MDT	Dense Fog Advisory	BOU	Elbert, Lincoln, Washington, Weld	100 min
May 29, 1:34 PM MDT	Special Weather Statement	BOU	Boulder	26 min
May 29, 1:55 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	35 min
May 29, 2:07 PM MDT	Severe Thunderstorm Warning	BOU	Douglas	23 min
May 29, 2:29 PM MDT	Severe Thunderstorm Warning	BOU	Weld	31 min
May 29, 2:59 PM MDT	Special Weather Statement	BOU	Weld	31 min
May 29, 3:39 PM MDT	Areal Flood Advisory	BOU	Larimer	83 min
May 29, 4:58 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	32 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.