Alert archive / Colorado / Special Weather Statements in 2016
Special Weather Statement, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this special weather statement at Jun 20, 2016, 4:22 PM MDT for Jefferson County, Colorado. It was in force for 38 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
- Jun 20, 2016, 4:22 PM MDT (22:22 UTC)
- Expired
- Jun 20, 2016, 5:00 PM MDT
- In force
- 38 min
- Issued by
- NWS Denver/Boulder, CO
County Jefferson County, CO
The radar
The Denver radar (KFTG), 90 km from the middle of the area, began a volume at 22:25 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 (KDEN), launched 12:00Z, 10.4 hours before the alert went out and 198 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
- 2874 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
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 Jun 20, 3:40 PM MDT, 42 minutes earlier.
Area forecast discussion, Jun 20, 3:40 PM MDT, 42 minutes before
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</head>
<body>
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<h1 id="headline">This service is currently unavailable.</h1>
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</html>Hazardous weather outlook, Jun 20, 11:10 AM MDT, 5 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1110 AM MDT MON JUN 20 2016 COZ030>051-211715- 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- 1110 AM MDT MON JUN 20 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT LOW CLOUDS ACROSS MUCH OF THE NORTHEAST COLORADO PLAINS WILL KEEP TEMPERATURES COOLER THROUGH THE AFTERNOON. THE ONLY AREAS EXPECTED TO SEE AFTERNOON THUNDERSTORMS WILL BE THE FRONT RANGE FOOTHILLS AND OVER THE PALMER DIVIDE. SOME STORMS OVER THE PALMER DIVIDE MAY PRODUCE HAIL UP TO ONE INCH IN DIAMETER ALONG WITH LOCALLY HEAVY RAIN AND GUSTY WINDS. STORMS OVER THE FOOTHILLS SHOULD PRODUCE BRIEF RAIN AND SMALL HAIL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY ANOTHER HOT DAY IS EXPECTED ON TUESDAY WITH NEAR RECORD TEMPERATURES AS HIGHS BOUNCE BACK INTO THE MID AND UPPER 90S. WINDS WILL INCREASE OVER THE HIGH TERRAIN...INCREASING FIRE DANGER AS THE HOT AND DRY WEATHER CONTINUES. IT WILL REMAIN WARM THROUGH THE WEEK AS A RIDGE OF HIGH PRESSURE REMAINS AS THE DOMINANT INFLUENCE...THOUGH A FEW WEAK COLD FRONTS WILL KEEP IT FROM REACHING RECORD LEVELS...ESPECIALLY THIS WEEKEND. THERE MAY BE ENOUGH MOISTURE AROUND LATE TUESDAY FOR A FEW HIGH BASED THUNDERSTORMS. ENOUGH RESIDUAL MOISTURE WILL REMAIN OVER THE AREA FOR THE WEEK TO KEEP A SLIGHT CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS EACH DAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.
In the hours before
Special weather statement, Jun 20, 4:22 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
422 PM MDT MON JUN 20 2016
COZ036-202300-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET CO-
422 PM MDT MON JUN 20 2016
...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL JEFFERSON AND
NORTHEASTERN PARK COUNTIES UNTIL 500 PM MDT...
AT 421 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
PINE JUNCTION...OR 31 MILES SOUTHWEST OF DENVER...MOVING EAST AT 20
MPH.
DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.
LOCATIONS IMPACTED INCLUDE...
PINE JUNCTION...BAILEY AND PINE.
LAT...LON 3934 10541 3933 10547 3934 10548 3934 10545
3937 10545 3937 10548 3939 10549 3939 10550
3938 10550 3940 10554 3942 10549 3943 10550
3944 10548 3950 10541 3941 10525 3931 10540
TIME...MOT...LOC 2221Z 275DEG 16KT 3943 10540
RTGThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 7:50 PM MDT | Special Weather Statement | BOU | Douglas | 25 min |
| Jun 19, 8:01 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 44 min |
| Jun 19, 8:32 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 43 min |
| Jun 19, 9:01 PM MDT | Special Weather Statement | BOU | Douglas | 44 min |
| Jun 19, 9:11 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 49 min |
| Jun 19, 10:04 PM MDT | Special Weather Statement | BOU | Elbert | 41 min |
| Jun 19, 10:13 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 47 min |
| Jun 19, 10:58 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 47 min |
| Jun 19, 11:05 PM MDT | Areal Flood Advisory | BOU | Douglas, Elbert | 115 min |
| Jun 19, 11:46 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 32 min |
| Jun 20, 4:30 PM MDT | Severe Thunderstorm Warning | BOU | Jefferson, Park | 34 min |
| Jun 20, 4:54 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Jefferson | 36 min |
| Jun 20, 5:03 PM MDT | Areal Flood Advisory | BOU | Douglas, Jefferson, Park | 2 hr |
| Jun 20, 5:37 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 23 min |
Nearby
Special Weather Statements in Colorado, 2016Every special weather statement in 2016
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.