Alert archive / Colorado / High Wind Warnings in 2020
High Wind Warning 8, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this high wind warning at Oct 13, 2020, 1:55 PM MDT for 9 counties in Colorado. It took effect at Oct 14, 2020, 12:00 AM MDT. It was in force for 12 hr. 14 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Oct 13, 2020, 1:55 PM MDT (19:55 UTC)
- In effect from
- Oct 14, 2020, 12:00 AM MDT
- Expired
- Oct 14, 2020, 12:00 PM MDT
- In force
- 12 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 102 km from the middle of the area, began a volume at 19:55 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 14, 2:55 AM MDT | NON-TSTM WND GST 90 | 1 Ene Berthoud Pass, CO | AWOS STATION K0CO BERTHOUD PASS. |
| Oct 14, 3:19 AM MDT | NON-TSTM WND GST 70 | 1 N Georgetown, CO | MESONET STATION CO162 0.85 MI E OF 15TH ST GEORGETOWN. |
| Oct 14, 3:47 AM MDT | NON-TSTM WND GST 60 | Pingree Park, CO | MESONET STATION TT031 IRAWS 28. |
| Oct 14, 5:33 AM MDT | NON-TSTM WND GST 73 | 6 Nne Cameron Pass, CO | MESONET STATION TT041 IRWAS 35 CHAMBERS LAKE. |
| Oct 14, 8:39 AM MDT | NON-TSTM WND GST 63 | 2 Wsw Dillon, CO | CDOT MESONET STATION CO152 SILVERTHORNE. |
| Oct 14, 8:55 AM MDT | NON-TSTM WND GST 96 | 1 Ene Berthoud Pass, CO | AWOS STATION K0CO BERTHOUD PASS. SUSTAINED WIND 67 MPH. |
| Oct 14, 9:15 AM MDT | NON-TSTM WND GST 104 | 1 Ene Berthoud Pass, CO | AWOS STATION K0CO BERTHOUD PASS. |
| Oct 14, 9:29 AM MDT | NON-TSTM WND GST 60 | 2 Wsw Frisco, CO | MESONET STATION CO155 1.3 MI W OF FRISCO. |
| Oct 14, 9:35 AM MDT | NON-TSTM WND GST 67 | 1 S Copper Mountain, CO | AWOS STATION KCCU RED CLIFF PASS. |
| Oct 14, 9:49 AM MDT | NON-TSTM WND GST 63 | 4 Ene Nederland, CO | MESONET STATION DW5338 NEDERLAND. |
| Oct 14, 9:50 AM MDT | NON-TSTM WND GST 70 | 4 Ne Nederland, CO | |
| Oct 14, 10:10 AM MDT | NON-TSTM WND GST 62 | Aspen Springs, CO | MESONET STATION CW5066 GILPIN CO. |
| Oct 14, 11:10 AM MDT | NON-TSTM WND GST 59 | 1 Ne Crisman, CO | MESONET STATION EW4338 BOULDER. |
| Oct 14, 11:17 AM MDT | NON-TSTM WND GST 64 | 3 Wnw Mishowaka, CO | MESONET STATION BLIC1 IRAWS29. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 7.9 hours before the alert went out and 213 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3331 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
791 WWUS75 KBOU 131955 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 155 PM MDT Tue Oct 13 2020 COZ033-035-140600- /O.UPG.KBOU.HW.A.0002.201014T0600Z-201014T1800Z/ /O.NEW.KBOU.HW.W.0008.201014T0600Z-201014T1800Z/ South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- Larimer and Boulder Counties Between 6000 and 9000 Feet- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Estes Park, Glendevey, Nederland, and Red Feather Lakes 155 PM MDT Tue Oct 13 2020 ...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO NOON MDT WEDNESDAY... * WHAT...West winds 40 to 50 mph with gusts up to 80 mph expected. * WHERE...Rocky Mountain National Park and the Medicine Bow Range and The Northern Front Range Foothills. * WHEN...From midnight tonight to noon MDT Wednesday. * IMPACTS...Strong winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. && $$
3 follow-up statements
774 WWUS75 KBOU 140147 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 747 PM MDT Tue Oct 13 2020 COZ034-141000- /O.EXA.KBOU.HW.W.0008.201014T0600Z-201014T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, and Winter Park 747 PM MDT Tue Oct 13 2020 ...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO NOON MDT WEDNESDAY... * WHAT...West winds 35 to 45 mph with gusts up to 75 mph expected. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From midnight tonight to noon MDT Wednesday. * IMPACTS...Strong winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. && $$ COZ033-035-141000- /O.CON.KBOU.HW.W.0008.201014T0600Z-201014T1800Z/ South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- Larimer and Boulder Counties Between 6000 and 9000 Feet- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Estes Park, Glendevey, Nederland, and Red Feather Lakes 747 PM MDT Tue Oct 13 2020 ...HIGH WIND WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON MDT WEDNESDAY... * WHAT...West winds 40 to 50 mph with gusts up to 80 mph expected. * WHERE...Rocky Mountain National Park and the Medicine Bow Range and The Northern Front Range Foothills. * WHEN...From midnight tonight to noon MDT Wednesday. * IMPACTS...Strong winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. && $$
908 WWUS75 KBOU 141010 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 410 AM MDT Wed Oct 14 2020 COZ033>035-141800- /O.CON.KBOU.HW.W.0008.000000T0000Z-201014T1800Z/ South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, and Red Feather Lakes 410 AM MDT Wed Oct 14 2020 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...West winds 40 to 50 mph with gusts up to 80 mph expected. * WHERE...Rocky Mountain National Park and the Medicine Bow Range and The Northern Front Range Foothills. * WHEN...Until 12 pm MDT Today. * IMPACTS...Strong winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. && $$
101 WWUS75 KBOU 141758 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 1158 AM MDT Wed Oct 14 2020 COZ033>035-141900- /O.EXP.KBOU.HW.W.0008.000000T0000Z-201014T1800Z/ 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- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, and Red Feather Lakes 1158 AM MDT Wed Oct 14 2020 ...HIGH WIND WARNING WILL EXPIRE AT NOON MDT TODAY... Winds have decreased below warning criteria this morning so the warning will be allowed to expire at noon. Gusts up to 70 mph will be possible for the rest of the afternoon across the mountains and northern foothills. $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 4:06 AM MDT | High Wind Watch | BOU | Boulder, Grand, Jackson, Larimer | 10 hr |
| Oct 13, 1:54 PM MDT | Red Flag Warning | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 9 more | 28 hr |
Nearby
High Wind Warnings in Colorado, 2020Every high wind warning in 2020
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.