Severe Thunderstorm Warning
NWS Denver CO ยท US
New
This event was updated at .
Details
Severe Thunderstorm Warning Issued September 20 At 10:09PM MDT Until September 20 At 11:00PM MDT By NWS Denver CO
- Event
- Severe Thunderstorm Warning
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Observed
- Response
- Shelter
Description
Overview
SVRBOU The National Weather Service in Denver has issued a * Severe Thunderstorm Warning for... Southwestern Weld County in northeastern Colorado... * Until 1100 PM MDT. * At 1009 PM MDT, a severe thunderstorm was located 5 miles south of Gilcrest, or 14 miles south of Greeley, moving east at 25 mph.
Hazard
60 mph wind gusts and half dollar size hail.
Source
Radar indicated.
Impacts
Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees.
Locations impacted
Platteville, Hudson, Keenesburg, Gilcrest, Milton Reservoir, Prospect Valley, Roggen, Peckham and Fort St Vrain.
Instructions
Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail.
Affected areas
- Weld County, CO
Public contact
- Issuer
- NWS Denver CO
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~36s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M312FCDD6MH43VM8BPJ7JF8Z
- Identifier
- urn:oid:2.49.0.1.840.0.b6b93b0deedf6ac02614ab2876da01613a9208c6.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Denver CO
- AWIPS ID
- CAPBOU
- NWWS sequence
- nwws_processor.5957
- WMO heading
- XOUS55
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 55
Event codes
| Name | Value |
|---|---|
| SAME | SVR |
| NationalWeatherService | SVW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | SVRBOU |
| WMOidentifier | WUUS55 KBOU 210409 |
| eventMotionDescription | 2026-09-21T04:08:00-00:00...storm...288DEG...21KT...40.22,-104.75 |
| windThreat | RADAR INDICATED |
| maxWindGust | 60 MPH |
| hailThreat | RADAR INDICATED |
| maxHailSize | 1.25 |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.KBOU.SV.W.0410.260921T0409Z-260921T0500Z/ |
| eventEndingTime | 2026-09-20T23:00:00-06:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Weld County, CO
| Name | Value |
|---|---|
| SAME | 008123 |
| UGC | COC123 |
- Polygons
- 40.33,-104.82 40.3,-104.27 40.0,-104.43 40.0,-104.55 40.2,-104.91 40.33,-104.82