Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 7, NWS Denver/Boulder, CO

April 27, 2021Elbert County, Lincoln County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Apr 27, 2021, 2:49 PM MDT for Elbert County, Lincoln County, Colorado. It was in force for 41 min. 4 reports 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
Apr 27, 2021, 2:49 PM MDT (20:49 UTC)
Expired
Apr 27, 2021, 3:30 PM MDT
In force
41 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

Counties Elbert County, CO, Lincoln County, CO

The radar

The Pueblo radar (KPUX), 71 km from the middle of the area, began a volume at 20:49 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

TimeReportWhereRemark
Apr 27, 2:49 PM MDTHAIL 1.53 W Punkin Center, COCORRECTS PREVIOUS HAIL REPORT FROM 3 W PUNKIN CENTER. SPOTTER NETWORK, NWS CHAT.
Apr 27, 2:49 PM MDTHAIL 1.53 W Punkin Center, COSPOTTER NETWORK, NWS CHAT.
Apr 27, 3:23 PM MDTHAIL 110 Wsw Hugo, COLI113.
Apr 27, 3:28 PM MDTHAIL 14 Sse Hugo, COLI216, HAIL COVERED GROUND TO 0.5-1.0 INCHES.

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.

IssuedProductOfficeLasted
Apr 27, 11:45 AM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 8.8 hours before the alert went out and 111 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, Denver, CO at 12:00Z on 2021-04-27Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2021-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
3214 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

514 
WUUS55 KBOU 272049
SVRBOU
COC039-073-272130-
/O.NEW.KBOU.SV.W.0007.210427T2049Z-210427T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
249 PM MDT Tue Apr 27 2021

The National Weather Service in Denver Colorado has issued a

* Severe Thunderstorm Warning for...
  Southeastern Elbert County in east central Colorado...
  Central Lincoln County in east central Colorado...

* Until 330 PM MDT.

* At 248 PM MDT, a severe thunderstorm was located near Punkin
  Center, or 25 miles south of Limon, moving northeast at 25 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. Hail may accumulate on roadways 
           causing hazardous travel.

* Locations impacted include...
  Hugo, Punkin Center and Boyero. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 3873 10374 3888 10387 3907 10378 3918 10338
      3894 10319
TIME...MOT...LOC 2048Z 241DEG 21KT 3889 10367 

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

DANIELSON
1 follow-up statement
882 
WWUS55 KBOU 272053
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
253 PM MDT Tue Apr 27 2021

COC039-073-272130-
/O.CON.KBOU.SV.W.0007.000000T0000Z-210427T2130Z/
Elbert CO-Lincoln CO-
253 PM MDT Tue Apr 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM MDT
FOR SOUTHEASTERN ELBERT AND CENTRAL LINCOLN COUNTIES...

At 252 PM MDT, a severe thunderstorm was located 4 miles northeast of
Punkin Center, or 25 miles south of Limon, moving northeast at 25
mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Trained weather spotters reported ping pong ball size hail 
         3 miles west of Punkin Center.

IMPACT...Expect damage to roofs, siding, and trees. People and 
         animals outdoors will be injured. Expect hail damage to 
         roofs, siding, windows, and vehicles. Hail may accumulate 
         on roadways causing hazardous travel.

Locations impacted include...
Hugo, Punkin Center and Boyero. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 3873 10374 3888 10387 3907 10378 3918 10338
      3894 10319
TIME...MOT...LOC 2052Z 241DEG 21KT 3890 10364 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
 
$$

DANIELSON

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 1:52 AM MDTSevere Thunderstorm WarningBOUWashington23 min
Apr 27, 3:16 AM MDTWinter Storm WarningBOUBoulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more30 hr
Apr 27, 11:35 AM MDTSpecial Weather StatementBOUDouglas25 min
Apr 27, 11:55 AM MDTSpecial Weather StatementBOUElbert50 min
Apr 27, 11:59 AM MDTSpecial Weather StatementBOUDenver31 min
Apr 27, 12:49 PM MDTSevere Thunderstorm WarningBOUAdams, Weld26 min
Apr 27, 1:15 PM MDTSpecial Weather StatementBOUAdams45 min
Apr 27, 1:51 PM MDTSpecial Weather StatementBOULincoln39 min
Apr 27, 1:53 PM MDTSpecial Weather StatementBOUWeld37 min
Apr 27, 1:59 PM MDTSevere Thunderstorm WarningBOUWeld31 min
Apr 27, 2:02 PM MDTSevere Thunderstorm WarningBOUElbert28 min
Apr 27, 2:08 PM MDTWinter Weather AdvisoryBOUClear Creek, Douglas, Gilpin, Jefferson, Park20 hr
Apr 27, 2:23 PM MDTSevere Thunderstorm WarningBOUElbert, Lincoln52 min
Apr 27, 2:43 PM MDTSevere Thunderstorm WarningBOUAdams, Morgan32 min
Apr 27, 3:00 PM MDTSpecial Weather StatementBOULincoln45 min
Apr 27, 3:10 PM MDTSpecial Weather StatementBOUMorgan20 min
Apr 27, 3:13 PM MDTSevere Thunderstorm WarningBOUAdams, Morgan, Washington32 min
Apr 27, 3:28 PM MDTSevere Thunderstorm WarningBOULincoln47 min
Apr 27, 3:32 PM MDTSpecial Weather StatementBOUMorgan28 min
Apr 27, 3:41 PM MDTTornado WarningBOULincoln34 min
Apr 27, 4:12 PM MDTSevere Thunderstorm WarningBOULincoln33 min
Apr 27, 4:16 PM MDTSevere Thunderstorm WarningBOULogan, Morgan, Washington17 min
Apr 27, 4:36 PM MDTTornado WarningBOULincoln24 min
Apr 27, 5:19 PM MDTSevere Thunderstorm WarningBOUWashington26 min
Apr 27, 5:51 PM MDTSpecial Weather StatementBOUPhillips24 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2021Every 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.