Alert archive / Colorado / Special Weather Statements in 2021
Special Weather Statement, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this special weather statement at Sep 3, 2021, 3:27 PM MDT for Morgan County, Colorado. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 3, 2021, 3:27 PM MDT (21:27 UTC)
- Expired
- Sep 3, 2021, 4:15 PM MDT
- In force
- 48 min
- Issued by
- NWS Denver/Boulder, CO
- Hail
- 0.50 in
- Wind
- 55
County Morgan County, CO
The radar
The Denver radar (KFTG), 75 km from the middle of the area, began a volume at 21:30 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.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 9.5 hours before the alert went out and 44 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.
- Mixed-layer CAPE
- 39 J/kg
- Mixed-layer CIN
- -181 J/kg
- Mixed-layer LCL
- 1546 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this special weather statement went out at Sep 3, 1:47 PM MDT, 1 hour 40 minutes earlier.
Area forecast discussion, Sep 3, 1:47 PM MDT, 1 hour 40 minutes before
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</html>Hazardous weather outlook, Sep 3, 10:49 AM MDT, 4 hours 38 minutes before
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 1049 AM MDT Fri Sep 3 2021 COZ030>051-041700- Jackson County Below 9000 Feet- West Jackson and West Grand Counties Above 9000 Feet- Grand and Summit Counties Below 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Central and Southeast Park County- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Logan County-Washington County-Sedgwick County-Phillips County- 1049 AM MDT Fri Sep 3 2021 This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight Scattered thunderstorms will develop over the mountains and foothills early this afternoon and then spread across the urban corridor and northeast plains this afternoon and evening. A few of the storms may become severe over the plains. Those storms could produce hail up to 1.5 inch hail and damaging wind gusts to 60 mph. Locally heavy rainfall is also possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Saturday afternoon and evening, isolated thunderstorms are possible for the southern Front Range mountains and foothills, Palmer Divide, and adjacent plains. A few storms may persist into the night. Sunday through Wednesday, it will be dry with above normal temperatures. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today or tonight.
In the hours before
Local storm report, Sep 3, 1:45 PM MDT, 1 hour 42 minutes before
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</html>Special weather statement, Sep 3, 1:56 PM MDT, 1 hour 31 minutes before
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</html>Local storm report, Sep 3, 2:06 PM MDT, 1 hour 21 minutes before
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</html>Local storm report, Sep 3, 2:09 PM MDT, 1 hour 18 minutes before
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</html>Special weather statement, Sep 3, 3:27 PM MDT, 0 minutes before
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</html>The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 12:14 PM MDT | Special Weather Statement | BOU | Jefferson | 46 min |
| Sep 3, 12:54 PM MDT | Special Weather Statement | BOU | Jefferson | 51 min |
| Sep 3, 1:20 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Douglas | 40 min |
| Sep 3, 1:56 PM MDT | Special Weather Statement | BOU | Morgan | 49 min |
| Sep 3, 1:59 PM MDT | Special Weather Statement | BOU | Arapahoe | 46 min |
Nearby
Special Weather Statements in Colorado, 2021Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.