Alert archive / Colorado / Tornado Warnings in 2019

Tornado Warning 7, NWS Denver/Boulder, CO

May 26, 2019Weld County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at May 26, 2019, 6:10 PM MDT for Weld County, Colorado. It was in force for 21 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 26, 2019, 6:10 PM MDT (00:10 UTC)
Expired
May 26, 2019, 6:31 PM MDT
In force
21 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Weld County, CO

The radar

The Cheyenne radar (KCYS), 93 km from the middle of the area, began a volume at 00:10 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 26, 6:35 PM MDTHAIL 33 W New Raymer, CO
May 26, 6:37 PM MDTHAIL 2.52 Nne New Raymer, 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
May 26, 3:46 PM MDTTornado WatchSPC4 hr

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 0.2 hours before the alert went out and 105 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 00:00Z on 2019-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2019-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -191 square meters per square second.1939587897Sfc1 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
2004 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-191 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.9

Open this sounding in Storm Lab

The text

As transmitted.

606 
WFUS55 KBOU 270010
TORBOU
COC123-270045-
/O.NEW.KBOU.TO.W.0007.190527T0010Z-190527T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
610 PM MDT Sun May 26 2019

The National Weather Service in Denver Colorado has issued a

* Tornado Warning for...
  Northeastern Weld County in northeastern Colorado...

* Until 645 PM MDT.
    
* At 610 PM MDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles west of New Raymer, or 24 miles northwest of
  Fort Morgan, moving northeast at 20 mph.

  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.

* This dangerous storm will be near...
  New Raymer around 630 PM MDT.

Other locations impacted by this tornadic thunderstorm include
Buckingham.

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 4053 10388 4053 10401 4059 10410 4071 10408
      4078 10398 4077 10383 4067 10375
TIME...MOT...LOC 0010Z 212DEG 16KT 4058 10398 

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

$$

RJK
1 follow-up statement
392 
WWUS55 KBOU 270031
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
631 PM MDT Sun May 26 2019

COC123-270041-
/O.CAN.KBOU.TO.W.0007.000000T0000Z-190527T0045Z/
Weld CO-
631 PM MDT Sun May 26 2019

...THE TORNADO WARNING FOR NORTHEASTERN WELD COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened. 
Therefore, the warning has been cancelled.

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

LAT...LON 4053 10388 4053 10401 4059 10410 4071 10408
      4078 10398 4077 10383 4067 10375
TIME...MOT...LOC 0030Z 212DEG 16KT 4066 10391 

$$

RJK

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 6:13 PM MDTTornado WarningBOULincoln32 min
May 26, 6:41 PM MDTSevere Thunderstorm WarningBOUWeld49 min
May 27, 4:36 AM MDTWinter Storm WatchBOUBoulder, Grand, Jackson, Larimer10 hr
May 27, 12:50 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe40 min
May 27, 1:28 PM MDTSevere Thunderstorm WarningBOUAdams, Morgan, Weld47 min
May 27, 1:42 PM MDTTornado WarningBOUAdams33 min
May 27, 2:00 PM MDTSevere Thunderstorm WarningBOUMorgan45 min
May 27, 2:41 PM MDTSevere Thunderstorm WarningBOULogan, Morgan, Weld49 min
May 27, 3:01 PM MDTWinter Storm WarningBOUBoulder, Grand, Jackson, Larimer33 hr
May 27, 3:01 PM MDTWinter Weather AdvisoryBOUBoulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 2 more33 hr
May 27, 3:03 PM MDTTornado Warning Tornado observedBOULogan, Morgan, Weld27 min
May 27, 3:30 PM MDTTornado Warning Tornado observedBOULogan30 min
May 27, 3:40 PM MDTSevere Thunderstorm WarningBOUWeld35 min
May 27, 3:59 PM MDTTornado WarningBOULogan31 min
May 27, 4:00 PM MDTTornado WarningBOUWeld15 min
May 27, 4:28 PM MDTTornado WarningBOULogan, Sedgwick47 min
May 27, 4:49 PM MDTTornado WarningBOUAdams, Weld26 min
May 27, 4:55 PM MDTAreal Flood AdvisoryBOULogan, Sedgwick65 min
May 27, 4:55 PM MDTTornado WarningBOULogan, Phillips, Sedgwick35 min
May 27, 4:58 PM MDTSevere Thunderstorm WarningBOUWeld47 min
May 27, 5:26 PM MDTTornado WarningBOUSedgwick32 min
May 27, 5:40 PM MDTSevere Thunderstorm WarningBOUPhillips50 min
May 27, 5:52 PM MDTFlash Flood WarningBOULogan83 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.