Alert archive / Colorado / Tornado Warnings in 2021

Tornado Warning 4, NWS Denver/Boulder, CO

May 22, 2021Morgan County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at May 22, 2021, 1:28 PM MDT for Morgan County, Colorado. It was in force for 17 min. 2 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
May 22, 2021, 1:28 PM MDT (19:28 UTC)
Expired
May 22, 2021, 1:45 PM MDT
In force
17 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Tornado
Observed
Hail
1.0 in

County Morgan County, CO

The radar

The Denver radar (KFTG), 89 km from the middle of the area, began a volume at 19:32 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
May 22, 1:30 PM MDTTORNADO5 Ene Adena School, CO
May 22, 1:47 PM MDTTORNADO6 Se Brush, COBRIEF GROUND CIRCULATION.

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
May 22, 12:20 PM MDTTornado WatchSPC8 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 7.5 hours before the alert went out and 42 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 2021-05-22Temperature 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 2021-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
1528 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

050 
WFUS55 KBOU 221928
TORBOU
COC087-221945-
/O.NEW.KBOU.TO.W.0004.210522T1928Z-210522T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
128 PM MDT Sat May 22 2021

The National Weather Service in Denver Colorado has issued a

* Tornado Warning for...
  Southeastern Morgan County in northeastern Colorado...

* Until 145 PM MDT.

* At 127 PM MDT, a confirmed tornado was located near Gary, or 17
  miles southeast of Fort Morgan, moving north at 45 mph.

  HAZARD...Damaging tornado and quarter size hail.

  SOURCE...Weather spotters confirmed tornado.

  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...
  Fort Morgan, Brush and Gary. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 4000 10349 4000 10374 4031 10379 4032 10347
TIME...MOT...LOC 1927Z 181DEG 37KT 4004 10363 

TORNADO...OBSERVED
HAIL...1.00IN

$$

DANIELSON

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 7:18 PM MDTSpecial Weather StatementBOUMorgan27 min
May 21, 10:57 PM MDTSpecial Weather StatementBOUPhillips, Sedgwick48 min
May 22, 1:11 PM MDTSevere Thunderstorm WarningBOUAdams, Logan, Morgan, Washington49 min
May 22, 1:45 PM MDTTornado WarningBOUMorgan15 min
May 22, 1:54 PM MDTTornado Warning Tornado observedBOUMorgan, Washington36 min
May 22, 1:56 PM MDTSevere Thunderstorm WarningBOUDouglas, Elbert28 min
May 22, 1:58 PM MDTSevere Thunderstorm WarningBOULogan, Morgan, Washington33 min
May 22, 2:05 PM MDTTornado WarningBOUAdams, Arapahoe25 min
May 22, 2:18 PM MDTSpecial Weather StatementBOUAdams42 min
May 22, 2:43 PM MDTTornado WarningBOULogan17 min
May 22, 2:46 PM MDTSevere Thunderstorm WarningBOUPhillips, Sedgwick44 min
May 22, 2:57 PM MDTSevere Thunderstorm WarningBOULogan, Sedgwick48 min
May 22, 3:01 PM MDTTornado WarningBOULogan29 min
May 22, 3:16 PM MDTTornado WarningBOULincoln29 min
May 22, 3:25 PM MDTSevere Thunderstorm WarningBOUWeld35 min
May 22, 3:48 PM MDTTornado WarningBOUElbert, Lincoln27 min
May 22, 3:53 PM MDTSevere Thunderstorm WarningBOUMorgan, Weld26 min
May 22, 4:13 PM MDTTornado Warning Tornado observedBOUElbert, Lincoln32 min
May 22, 4:42 PM MDTTornado Warning Tornado observedBOUElbert, Lincoln33 min
May 22, 5:16 PM MDTTornado WarningBOUElbert, Lincoln29 min
May 22, 5:27 PM MDTSevere Thunderstorm WarningBOUElbert, Lincoln33 min

Nearby

Tornado Warnings in Colorado, 2021Every tornado warning in 2021Tornadoes 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.