Alert archive / Colorado / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 39, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 16, 2011, 5:24 PM MDT for 6 counties in Colorado. It was in force for 66 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 16, 2011, 5:24 PM MDT (23:24 UTC)
- Expired
- Jun 16, 2011, 6:30 PM MDT
- In force
- 66 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 80.0 mph
Counties Adams County, CO, Arapahoe County, CO, Elbert County, CO, Lincoln County, CO, Morgan County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 99 km from the middle of the area, began a volume at 23:26 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 |
|---|---|---|---|
| Jun 16, 5:46 PM MDT | HAIL 0.75 | 14 N Arriba, CO | MOST HAIL WAS PEA TO MARBLE SIZE |
| Jun 16, 6:12 PM MDT | TSTM WND DMG | Limon, CO | I-70 MILE MARKER 359, 2 18 WHEELERS FLIPPED ON THEIR SIDES. MILE MARK 357.5, 1 18 WHEELER ON ITS SIDE. WIND SPEED GUSTS UNKNOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 16, 1:55 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 11.4 hours before the alert went out and 61 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
- 2399 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -110 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
942
WUUS55 KBOU 162324
SVRBOU
COC001-005-039-073-087-121-170030-
/O.NEW.KBOU.SV.W.0039.110616T2324Z-110617T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
524 PM MDT THU JUN 16 2011
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN WASHINGTON COUNTY IN NORTHEAST COLORADO
SOUTHEASTERN MORGAN COUNTY IN NORTHEAST COLORADO
NORTHEASTERN LINCOLN COUNTY IN EAST CENTRAL COLORADO
EASTERN ELBERT COUNTY IN EAST CENTRAL COLORADO
EASTERN ARAPAHOE COUNTY IN NORTHEAST COLORADO
SOUTHEASTERN ADAMS COUNTY IN NORTHEAST COLORADO
* UNTIL 630 PM MDT
* AT 523 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING ONE INCH DIAMETER
HAIL...AND DESTRUCTIVE WINDS UP TO ABOUT 80 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 8 MILES NORTH OF ELBA TO 5
MILES SOUTH OF MATHESON...OR ALONG A LINE EXTENDING FROM 10 MILES
SOUTH OF AKRON TO 19 MILES SOUTHWEST OF LIMON...MOVING SOUTHEAST AT
15 MPH.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO COTTONWOOD
VALLEY...WOODROW...WOODLIN SCHOOL...THURMAN...SIMLA...MATHESON...
LINDON...LIMON...LAST CHANCE...HUGO...GENOA...ELBA...COPE...
BOYERO...ARRIBA...ARICKAREE SCHOOL...ANTON AND AGATE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DAMAGING WINDS UP TO 77 MPH WERE REPORTED IN LIMON WITH THIS STORM.
THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY FROM
WINDOWS!
THIS WARNING WILL REPLACE THE EARLIER SEVERE THUNDERSTORM WARNING
DUE TO THE OUTFLOW WINDS SPREADING OUT FAR FROM THE MAIN STORM AREA.
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 58 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
&&
LAT...LON 3910 10405 3912 10406 3918 10421 4020 10344
3985 10279 3957 10279 3956 10315 3868 10317
TIME...MOT...LOC 2323Z 310DEG 12KT 4003 10314 3910 10398
WIND...HAIL 80MPH 1.00IN
$$2 follow-up statements
333
WWUS55 KBOU 162350
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
550 PM MDT THU JUN 16 2011
COC001-005-162358-
/O.CAN.KBOU.SV.W.0039.000000T0000Z-110617T0030Z/
ARAPAHOE CO-ADAMS CO-
550 PM MDT THU JUN 16 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ADAMS AND EASTERN
ARAPAHOE COUNTIES IS CANCELLED...
THE STORM HAS EXITED THE AREA AND OUTFLOW WINDS ARE BEGINNING TO
DIMINISH.
LAT...LON 3905 10393 4020 10344 3985 10279 3957 10279
3955 10315 3868 10317
TIME...MOT...LOC 2348Z 310DEG 12KT 3998 10306 3905 10390
$$
COC039-073-087-121-170030-
/O.CON.KBOU.SV.W.0039.000000T0000Z-110617T0030Z/
WASHINGTON CO-MORGAN CO-LINCOLN CO-ELBERT CO-
550 PM MDT THU JUN 16 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR SOUTHEASTERN ELBERT...NORTHEASTERN LINCOLN...SOUTHEASTERN MORGAN
AND SOUTHERN WASHINGTON COUNTIES...
AT 548 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING ONE INCH DIAMETER
HAIL...AND DESTRUCTIVE WINDS UP TO ABOUT 80 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 7 MILES NORTHEAST OF ELBA TO 19
MILES SOUTHWEST OF LIMON...OR ALONG A LINE EXTENDING FROM 15 MILES
SOUTHEAST OF AKRON TO 19 MILES SOUTHWEST OF LIMON...MOVING SOUTHEAST
AT 15 MPH.
LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WOODLIN SCHOOL...THURMAN...LINDON...LIMON...LAST CHANCE...HUGO...
GENOA...ELBA...COPE...BOYERO...ARRIBA...ARICKAREE SCHOOL AND ANTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DAMAGING WINDS UP TO 77 MPH WERE REPORTED IN LIMON WITH THIS STORM.
THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY FROM
WINDOWS!
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 58 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
&&
LAT...LON 3905 10393 4020 10344 3985 10279 3957 10279
3955 10315 3868 10317
TIME...MOT...LOC 2348Z 310DEG 12KT 3998 10306 3905 10390
WIND...HAIL 80MPH 1.00IN
$$579
WWUS55 KBOU 170027 RRA
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
627 PM MDT THU JUN 16 2011
COC039-073-087-121-170036-
/O.EXP.KBOU.SV.W.0039.000000T0000Z-110617T0030Z/
WASHINGTON CO-MORGAN CO-LINCOLN CO-ELBERT CO-
627 PM MDT THU JUN 16 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ELBERT...
NORTHEASTERN LINCOLN...SOUTHEASTERN MORGAN AND SOUTHERN WASHINGTON
COUNTIES WILL EXPIRE AT 630 PM MDT...
THE MAIN PART OF THE THUNDERSTORM THAT PROMPTED THE WARNING HAS
EXITED EAST THE AREA. HOWEVER...STRONG OUTFLOW WINDS CAN STILL BLOW
OUT OF THE STORM AND HAIL UP TO A HALF INCH IN DIAMETER CAN STILL BE
EXPECTED OVER FAR SOUTHEASTERN WASHINGTON COUNTY.
LAT...LON 3905 10393 4020 10344 3985 10279 3957 10279
3955 10315 3868 10317
TIME...MOT...LOC 0026Z 310DEG 12KT 3990 10293 3897 10378
$$The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 6:50 PM MDT | Red Flag Warning | BOU | Arapahoe, Boulder, Clear Creek, Douglas, Elbert, Gilpin and 5 more | 25 hr |
| Jun 16, 1:00 PM MDT | Special Weather Statement | BOU | Jackson | 30 min |
| Jun 16, 2:45 PM MDT | Areal Flood Advisory | BOU | Grand | 9 days |
| Jun 16, 3:05 PM MDT | Special Weather Statement | BOU | Arapahoe | 25 min |
| Jun 16, 3:48 PM MDT | Special Weather Statement | BOU | Elbert | 27 min |
| Jun 16, 4:28 PM MDT | Special Weather Statement | BOU | Elbert | 32 min |
| Jun 16, 5:03 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert, Lincoln, Washington | 23 min |
| Jun 16, 5:43 PM MDT | Severe Thunderstorm Warning | BOU | Jackson, Larimer | 47 min |
| Jun 16, 5:57 PM MDT | Special Weather Statement | BOU | Douglas | 48 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2011Every severe thunderstorm warning in 2011
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.