Alert archive / Colorado / Tornado Warnings in 2019

Tornado Warning 21, NWS Denver/Boulder, CO

June 21, 2019Elbert County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 21, 2019, 3:27 PM MDT for Elbert County, Colorado. It was in force for 33 min. 6 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
Jun 21, 2019, 3:27 PM MDT (21:27 UTC)
Expired
Jun 21, 2019, 4:00 PM MDT
In force
33 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Elbert County, CO

The radar

The Denver radar (KFTG), 62 km from the middle of the area, began a volume at 21:31 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
Jun 21, 3:33 PM MDTHAIL 17 E Kiowa, CO
Jun 21, 3:36 PM MDTHAIL 1.758 Ene Fondis, CO
Jun 21, 3:40 PM MDTHAIL 1.29 Nnw Simla, CO
Jun 21, 3:41 PM MDTHAIL 1.39 Nnw Simla, CO
Jun 21, 3:51 PM MDTHAIL 1.751 W Simla, CO
Jun 21, 3:59 PM MDTHAIL 21 N Simla, 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.

IssuedProductOfficeLasted
Jun 21, 12:42 PM MDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 9.5 hours before the alert went out and 110 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 2019-06-21Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2019-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.19395878Sfc1 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
1246 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
189 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

759 
WFUS55 KBOU 212127
TORBOU
COC039-212200-
/O.NEW.KBOU.TO.W.0021.190621T2127Z-190621T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
327 PM MDT Fri Jun 21 2019

The National Weather Service in Denver Colorado has issued a

* Tornado Warning for...
  Central Elbert County in east central Colorado...

* Until 400 PM MDT.
    
* At 326 PM MDT, a severe thunderstorm capable of producing a tornado
  was located 9 miles northwest of Ramah, or 32 miles west of Limon, 
  moving east at 30 mph.  At 325 PM storm chasers are reporting 
  rapid rotation at the cloud base.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Simla.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3936 10443 3941 10405 3913 10399 3913 10439
TIME...MOT...LOC 2126Z 262DEG 28KT 3922 10430 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

SCHLATTER
1 follow-up statement
522 
WWUS55 KBOU 212139
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
339 PM MDT Fri Jun 21 2019

COC039-212200-
/O.CON.KBOU.TO.W.0021.000000T0000Z-190621T2200Z/
Elbert CO-
339 PM MDT Fri Jun 21 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM MDT FOR CENTRAL
ELBERT COUNTY...
    
At 339 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Ramah, or 25 miles west of Limon, moving east at 30
mph.  Golfball hail was recently reported with this storm.

HAZARD...Tornado and golf ball size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Simla.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3937 10432 3941 10405 3913 10399 3913 10431
TIME...MOT...LOC 2139Z 266DEG 26KT 3916 10415 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

SCHLATTER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 6:13 PM MDTSpecial Weather StatementBOUWeld32 min
Jun 20, 6:21 PM MDTSevere Thunderstorm WarningBOUWashington24 min
Jun 20, 6:43 PM MDTSevere Thunderstorm WarningBOUWashington32 min
Jun 20, 6:50 PM MDTSpecial Weather StatementBOULogan40 min
Jun 20, 7:29 PM MDTSpecial Weather StatementBOULogan46 min
Jun 20, 8:05 PM MDTSpecial Weather StatementBOUSedgwick25 min
Jun 21, 4:42 AM MDTWinter Weather AdvisoryBOUBoulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more48 hr
Jun 21, 2:09 PM MDTSpecial Weather StatementBOUDouglas36 min
Jun 21, 2:46 PM MDTSpecial Weather StatementBOUDouglas44 min
Jun 21, 3:00 PM MDTSevere Thunderstorm WarningBOUDouglas, Elbert45 min
Jun 21, 3:07 PM MDTTornado WarningBOUElbert23 min
Jun 21, 3:51 PM MDTSevere Thunderstorm WarningBOUElbert, Lincoln39 min
Jun 21, 4:26 PM MDTSevere Thunderstorm WarningBOUElbert, Lincoln32 min
Jun 21, 4:59 PM MDTSpecial Weather StatementBOULincoln31 min
Jun 21, 5:03 PM MDTSpecial Weather StatementBOUElbert42 min
Jun 21, 5:13 PM MDTSpecial Weather StatementBOULincoln32 min
Jun 21, 5:41 PM MDTSpecial Weather StatementBOULincoln49 min

Nearby

Tornado Warnings in Colorado, 2019Every tornado warning in 2019Tornadoes in 2019

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.