Alert archive / Colorado / Tornado Warnings in 2014
Tornado Warning 66, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 18, 2014, 7:41 PM MDT for Logan County, Washington County, Colorado. It was in force for 34 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 18, 2014, 7:41 PM MDT (01:41 UTC)
- Expired
- Jun 18, 2014, 8:15 PM MDT
- In force
- 34 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.25 in
Counties Logan County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 137 km from the middle of the area, began a volume at 01:43 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 00:00Z, 1.7 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
- 382 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 2444 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 391 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
931
WFUS55 KBOU 190141
TORBOU
COC075-121-190215-
/O.NEW.KBOU.TO.W.0066.140619T0141Z-140619T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
741 PM MDT WED JUN 18 2014
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
NORTH CENTRAL WASHINGTON COUNTY IN NORTHEAST COLORADO...
SOUTHWESTERN LOGAN COUNTY IN NORTHEAST COLORADO...
* UNTIL 815 PM MDT
* AT 741 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED 6 MILES EAST OF PREWITT RESERVOIR...OR 15 MILES
SOUTH OF STERLING...MOVING EAST AT 20 MPH.
HAZARD...TORNADO AND HALF DOLLAR SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE
DAMAGE IS LIKELY.
* LOCATIONS IMPACTED INCLUDE...
STERLING...MERINO...ATWOOD AND PREWITT RESERVOIR.
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 4068 10315 4053 10300 4036 10300 4029 10334
4035 10346 4054 10347
TIME...MOT...LOC 0141Z 249DEG 16KT 4043 10324
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
BARJENBRUCH1 follow-up statement
501
WWUS55 KBOU 190157
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
757 PM MDT WED JUN 18 2014
COC075-121-190215-
/O.CON.KBOU.TO.W.0066.000000T0000Z-140619T0215Z/
WASHINGTON CO-LOGAN CO-
757 PM MDT WED JUN 18 2014
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM MDT FOR NORTH
CENTRAL WASHINGTON AND SOUTH CENTRAL LOGAN COUNTIES...
AT 756 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 8 MILES SOUTHEAST OF ATWOOD...OR 13 MILES SOUTH OF
STERLING...MOVING EAST AT 20 MPH.
HAZARD...TORNADO AND GOLF BALL SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
LIKELY.
LOCATIONS IMPACTED INCLUDE...
ATWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4053 10300 4036 10300 4036 10316 4047 10325
4054 10331 4064 10311
TIME...MOT...LOC 0156Z 249DEG 16KT 4045 10315
TORNADO...RADAR INDICATED
HAIL...1.75IN
$$
BARJENBRUCHThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 6:03 PM MDT | Special Weather Statement | BOU | Broomfield | 27 min |
| Jun 18, 6:28 PM MDT | Special Weather Statement | BOU | Denver | 32 min |
| Jun 18, 6:33 PM MDT | Special Weather Statement | BOU | Broomfield | 27 min |
| Jun 18, 6:57 PM MDT | Special Weather Statement | BOU | Broomfield, Denver | 33 min |
| Jun 18, 7:06 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 24 min |
| Jun 18, 7:18 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 42 min |
| Jun 18, 7:29 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 46 min |
| Jun 18, 7:33 PM MDT | Special Weather Statement | BOU | Adams | 27 min |
| Jun 18, 8:00 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 30 min |
| Jun 18, 8:10 PM MDT | Tornado Warning | BOU | Logan, Phillips | 50 min |
| Jun 18, 8:17 PM MDT | Tornado Warning | BOU | Washington | 28 min |
| Jun 18, 8:40 PM MDT | Tornado Warning | BOU | Washington | 35 min |
| Jun 18, 8:48 PM MDT | Tornado Warning | BOU | Logan, Phillips, Sedgwick | 27 min |
| Jun 18, 9:10 PM MDT | Tornado Warning | BOU | Phillips, Sedgwick | 35 min |
Nearby
Tornado Warnings in Colorado, 2014Every tornado warning in 2014Tornadoes in 2014
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.