Alert archive / Colorado / Tornado Warnings in 2013
Tornado Warning 35, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 23, 2013, 7:15 PM MDT for Adams County, Washington County, Colorado. It was in force for 30 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 23, 2013, 7:15 PM MDT (01:15 UTC)
- Expired
- Jun 23, 2013, 7:45 PM MDT
- In force
- 30 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Adams County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 76 km from the middle of the area, began a volume at 01:15 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 23, 4:40 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.3 hours before the alert went out and 37 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
- 73 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 3153 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
391
WFUS55 KBOU 240115
TORBOU
COC001-121-240145-
/O.NEW.KBOU.TO.W.0035.130624T0115Z-130624T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
715 PM MDT SUN JUN 23 2013
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHWESTERN WASHINGTON COUNTY IN NORTHEAST COLORADO...
EXTREME EASTERN ADAMS COUNTY IN NORTHEAST COLORADO...
* UNTIL 745 PM MDT
* AT 715 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED 4 MILES EAST OF SHAMROCK...OR 27 MILES SOUTH OF
FORT MORGAN...MOVING EAST AT 10 MPH.
HAZARD...TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...SPORADIC DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES.
* LOCATIONS IMPACTED INCLUDE...
WOODROW AND WOODLIN SCHOOL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3976 10377 3999 10376 3999 10349 3976 10350
TIME...MOT...LOC 0115Z 277DEG 9KT 3987 10372
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
RPK3 follow-up statements
008
WWUS55 KBOU 240123
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
723 PM MDT SUN JUN 23 2013
COC001-121-240145-
/O.CON.KBOU.TO.W.0035.000000T0000Z-130624T0145Z/
WASHINGTON CO-ADAMS CO-
723 PM MDT SUN JUN 23 2013
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR
SOUTHWESTERN WASHINGTON AND EXTREME EASTERN ADAMS COUNTIES...
AT 722 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES EAST OF SHAMROCK...OR 27 MILES SOUTH OF FORT
MORGAN...MOVING EAST AT 15 MPH.
HAZARD...TORNADO AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...SPORADIC DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES.
LOCATIONS IMPACTED INCLUDE...
WOODROW AND WOODLIN SCHOOL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3976 10377 3999 10376 3999 10349 3976 10350
TIME...MOT...LOC 0122Z 259DEG 12KT 3988 10368
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
RPK268
WWUS55 KBOU 240131
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
731 PM MDT SUN JUN 23 2013
COC001-240140-
/O.CAN.KBOU.TO.W.0035.000000T0000Z-130624T0145Z/
ADAMS CO-
731 PM MDT SUN JUN 23 2013
...THE TORNADO WARNING FOR EXTREME EASTERN ADAMS COUNTY IS
CANCELLED...
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT
OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3976 10370 3999 10370 3999 10349 3976 10350
TIME...MOT...LOC 0130Z 260DEG 12KT 3989 10363
$$
COC121-240145-
/O.CON.KBOU.TO.W.0035.000000T0000Z-130624T0145Z/
WASHINGTON CO-
731 PM MDT SUN JUN 23 2013
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR
SOUTHWESTERN WASHINGTON COUNTY...
AT 730 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 6 MILES SOUTHWEST OF WOODROW...OR 27 MILES SOUTH OF FORT
MORGAN...MOVING EAST AT 15 MPH.
HAZARD...TORNADO AND QUARTER SIZE HAIL.
SOURCE...WEATHER SPOTTERS REPORTED A FUNNEL CLOUD.
IMPACT...SPORADIC DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES.
LOCATIONS IMPACTED INCLUDE...
WOODROW AND WOODLIN SCHOOL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3976 10370 3999 10370 3999 10349 3976 10350
TIME...MOT...LOC 0130Z 260DEG 12KT 3989 10363
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
RPK534
WWUS55 KBOU 240144
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
744 PM MDT SUN JUN 23 2013
COC121-240153-
/O.EXP.KBOU.TO.W.0035.000000T0000Z-130624T0145Z/
WASHINGTON CO-
744 PM MDT SUN JUN 23 2013
...THE TORNADO WARNING FOR SOUTHWESTERN WASHINGTON COUNTY WILL EXPIRE
AT 745 PM MDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER SMALL HAIL
AND GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 3976 10370 3999 10370 3999 10349 3976 10350
TIME...MOT...LOC 0138Z 277DEG 9KT 3989 10363
$$
RPKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 6:12 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 33 min |
| Jun 23, 6:44 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 31 min |
| Jun 23, 7:17 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 28 min |
| Jun 23, 7:46 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 29 min |
| Jun 23, 8:10 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 35 min |
| Jun 23, 8:25 PM MDT | Tornado Warning | BOU | Washington | 35 min |
| Jun 23, 8:40 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 35 min |
| Jun 23, 9:00 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 30 min |
| Jun 23, 9:07 PM MDT | Special Weather Statement | BOU | Denver | 23 min |
| Jun 23, 9:29 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 31 min |
| Jun 23, 10:07 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 38 min |
| Jun 23, 10:14 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan, Weld | 46 min |
| Jun 24, 1:30 AM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 45 min |
| Jun 24, 5:01 AM MDT | Red Flag Warning | BOU | Arapahoe, Clear Creek, Douglas, Elbert, Gilpin, Grand and 4 more | 15 hr |
| Jun 24, 2:32 PM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Douglas, Gilpin, Jefferson, Larimer and 1 more | 27 hr |
Nearby
Tornado Warnings in Colorado, 2013Every tornado warning in 2013Tornadoes in 2013
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.