Alert archive / Colorado / Special Weather Statements in 2019
Special Weather Statement, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this special weather statement at Aug 7, 2019, 8:47 PM MDT for Morgan County, Colorado. It was in force for 43 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
- Aug 7, 2019, 8:47 PM MDT (02:47 UTC)
- Expired
- Aug 7, 2019, 9:30 PM MDT
- In force
- 43 min
- Issued by
- NWS Denver/Boulder, CO
County Morgan County, CO
The radar
The Denver radar (KFTG), 62 km from the middle of the area, began a volume at 02:47 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 00:00Z, 2.8 hours before the alert went out and 69 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
- 564 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 2574 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- 16 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 Aug 7, 8:20 PM MDT, 27 minutes earlier.
Area forecast discussion, Aug 7, 8:20 PM MDT, 27 minutes before
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</html>Hazardous weather outlook, Aug 7, 11:02 AM MDT, 9 hours 45 minutes before
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 1102 AM MDT Wed Aug 7 2019 COZ030>051-081715- 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- 1102 AM MDT Wed Aug 7 2019 This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight Scattered showers and thunderstorms will push east and southeast over the mountains and adjacent plains early afternoon into early evening. Gusty winds up to 45 mph and light rainfall is expected with this activity. Further east over the far plains of northeast Colorado, scattered thunderstorms with heavy rain, hail up to one inch in diameter, and wind gusts to 60 mph will be possible later this afternoon into the night. The best chance for a severe storm will be east a line from Yuma to Sterling this evening. There may be isolated showers and thunderstorms across the forecast area later this evening into the early morning hours. These .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Slight cooling and a better chance of showers and thunderstorms can be expected Thursday and Friday. The chance of showers will then decrease over the weekend. Brief heavy rainfall will be the primary threat from thunderstorms on Thursday and Friday afternoons, along with some strong winds. Over the weekend, enough moisture will be available Saturday through Monday for isolated afternoon and early evening showers and thunderstorms. Gusty winds will be the primary threat from weekend storms. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed over the far plains of northeast Colorado today, mainly after 4 pm.
In the hours before
Special weather statement, Aug 7, 3:56 PM MDT, 4 hours 51 minutes before
Special Weather Statement
National Weather Service Denver CO
356 PM MDT Wed Aug 7 2019
COZ035-038-043-072245-
Central and South Weld County CO-
Larimer and Boulder Counties Between 6000 and 9000 Feet CO-
Larimer County Below 6000 Feet/Northwest Weld County CO-
356 PM MDT Wed Aug 7 2019
...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL WELD AND
SOUTHEASTERN LARIMER COUNTIES UNTIL 445 PM MDT...
At 355 PM MDT, Doppler radar was tracking a strong thunderstorm 4
miles northwest of Masonville, or 11 miles west of Fort Collins,
moving east at 30 mph.
Penny size hail, heavy rain, and winds in excess of 40 mph will be
possible with this storm.
Locations impacted include...
Fort Collins, western Greeley, Loveland, Windsor, Milliken,
Severance, Timnath and Masonville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall is also occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
If on or near Horsetooth Reservoir, get out of the water and move
indoors or inside a vehicle. Remember, lightning can strike out to
10 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
&&
LAT...LON 4056 10481 4033 10484 4046 10539 4047 10538
4048 10536 4049 10538 4061 10533
TIME...MOT...LOC 2155Z 292DEG 24KT 4052 10527
GIMMESTADSpecial weather statement, Aug 7, 6:46 PM MDT, 2 hours 1 minute before
Special Weather Statement
National Weather Service Denver CO
646 PM MDT Wed Aug 7 2019
COZ045-046-080130-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County CO-Central and East Adams and Arapahoe Counties CO-
646 PM MDT Wed Aug 7 2019
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ELBERT AND
SOUTHEASTERN ARAPAHOE COUNTIES UNTIL 730 PM MDT...
At 645 PM MDT, Doppler radar was tracking a strong thunderstorm 5
miles northeast of Agate, or 20 miles northwest of Limon, moving
north at 5 mph.
Penny size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Cottonwood Valley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall is also occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3949 10404 3970 10395 3968 10371 3967 10370
3944 10382
TIME...MOT...LOC 0045Z 190DEG 5KT 3953 10387
GIMMESTADSpecial weather statement, Aug 7, 8:15 PM MDT, 32 minutes before
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</html>Local storm report, Aug 7, 8:16 PM MDT, 31 minutes before
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</html>Special weather statement, Aug 7, 8:47 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 |
|---|---|---|---|---|
| Aug 7, 6:46 PM MDT | Special Weather Statement | BOU | Elbert | 44 min |
| Aug 7, 7:05 PM MDT | Areal Flood Advisory | BOU | Adams | 85 min |
| Aug 7, 7:29 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 46 min |
| Aug 7, 8:15 PM MDT | Special Weather Statement | BOU | Lincoln | 45 min |
| Aug 7, 10:21 PM MDT | Special Weather Statement | BOU | Morgan | 54 min |
| Aug 8, 1:01 PM MDT | Areal Flood Advisory | BOU | Logan | 67 min |
| Aug 8, 1:53 PM MDT | Areal Flood Advisory | BOU | Park | 46 min |
| Aug 8, 2:36 PM MDT | Special Weather Statement | BOU | Arapahoe | 39 min |
| Aug 8, 2:37 PM MDT | Areal Flood Advisory | BOU | Park | 53 min |
| Aug 8, 5:22 PM MDT | Areal Flood Advisory | BOU | Logan | 35 min |
| Aug 8, 5:32 PM MDT | Areal Flood Advisory | BOU | Elbert | 88 min |
| Aug 8, 5:43 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 47 min |
Nearby
Special Weather Statements in Colorado, 2019Every special weather statement in 2019
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.