Severe Thunderstorm Warning 129, NWS Denver/Boulder, CO

Issued

Aug 19, 2021, 2:30 PM MDT (20:30 UTC)

Expired

Aug 19, 2021, 3:00 PM MDT

In force

30 min

Issued by

NWS Denver/Boulder, CO

Area

Storm-based polygon

Hail

1.25 in

Wind

60.0 mph

County Douglas County, CO

The Denver radar (KFTG), 53 km from the middle of the area, began a volume at 20:34 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.

846 
WUUS55 KBOU 192030
SVRBOU
COC035-192100-
/O.NEW.KBOU.SV.W.0129.210819T2030Z-210819T2100Z/

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

The National Weather Service in Denver Colorado has issued a

* Severe Thunderstorm Warning for...
  Northeastern Douglas County in northeastern Colorado...

* Until 300 PM MDT.

* At 230 PM MDT, a severe thunderstorm was located over northern
  Castle Rock, or 27 miles south of Denver, 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...
  Castle Rock around 235 PM MDT.
  Franktown around 250 PM MDT.

Other locations in the path of this severe thunderstorm include
southwestern Parker, The Pinery and Castle Pines.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3933 10502 3955 10488 3943 10466 3938 10466
      3923 10487
TIME...MOT...LOC 2030Z 212DEG 18KT 3934 10489 

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

$$

RPK

983 
WWUS55 KBOU 192056
SVSBOU

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

COC035-192106-
/O.EXP.KBOU.SV.W.0129.000000T0000Z-210819T2100Z/
Douglas CO-
256 PM MDT Thu Aug 19 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DOUGLAS COUNTY
WILL EXPIRE AT 300 PM MDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
and heavy rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 800 PM MDT for
east central Colorado.

LAT...LON 3933 10502 3955 10488 3943 10466 3938 10466
      3923 10487
TIME...MOT...LOC 2056Z 212DEG 18KT 3945 10480 

$$

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.