Severe Thunderstorm Warning 131, NWS Denver/Boulder, CO

Issued

Aug 19, 2021, 3:14 PM MDT (21:14 UTC)

Expired

Aug 19, 2021, 3:45 PM MDT

In force

31 min

Issued by

NWS Denver/Boulder, CO

Area

Storm-based polygon

Hail

1.25 in

Wind

60.0 mph

County Weld County, CO

The Denver radar (KFTG), 37 km from the middle of the area, began a volume at 21:15 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.

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

649 
WUUS55 KBOU 192114
SVRBOU
COC123-192145-
/O.NEW.KBOU.SV.W.0131.210819T2114Z-210819T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
314 PM MDT Thu Aug 19 2021

The National Weather Service in Denver Colorado has issued a

* Severe Thunderstorm Warning for...
  South central Weld County in northeastern Colorado...

* Until 345 PM MDT.

* At 314 PM MDT, a severe thunderstorm was located over Keenesburg,
  or 25 miles southeast of Greeley, moving northeast at 20 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees. Hail damage to 
           vehicles is expected.

* This severe thunderstorm will be near...
  Prospect Valley around 320 PM MDT.

Other locations in the path of this severe thunderstorm include
Roggen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4001 10453 4015 10465 4029 10442 4013 10428
TIME...MOT...LOC 2114Z 233DEG 17KT 4011 10450 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RPK

341 
WWUS55 KBOU 192126
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
326 PM MDT Thu Aug 19 2021

COC123-192145-
/O.CON.KBOU.SV.W.0131.000000T0000Z-210819T2145Z/
Weld CO-
326 PM MDT Thu Aug 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM MDT
FOR SOUTH CENTRAL WELD COUNTY...

At 325 PM MDT, a severe thunderstorm was located 4 miles southwest of
Roggen, or 24 miles southeast of Greeley, moving northeast at 20 mph.

HAZARD...Tennis ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees. People and 
         animals outdoors will be injured. Expect hail damage to 
         roofs, siding, windows, and vehicles.

Locations impacted include...
  Roggen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

&&

LAT...LON 4003 10449 4018 10461 4029 10442 4013 10428
TIME...MOT...LOC 2125Z 233DEG 17KT 4014 10444 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RPK

Severe Thunderstorm Warnings in Colorado, 2021Every severe thunderstorm warning in 2021

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.