Alert archive / Colorado / Tornado Warnings in 2015
Tornado Warning 50, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Aug 7, 2015, 6:49 PM MDT for Morgan County, Washington County, Colorado. It was in force for 26 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, 2015, 6:49 PM MDT (00:49 UTC)
- Expired
- Aug 7, 2015, 7:15 PM MDT
- In force
- 26 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.5 in
Counties Morgan County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 102 km from the middle of the area, began a volume at 00:49 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 |
|---|---|---|---|
| Aug 7, 3:05 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 0.8 hours before the alert went out and 48 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
- 5 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 3228 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
739
WFUS55 KBOU 080049
TORBOU
COC087-121-080115-
/O.NEW.KBOU.TO.W.0050.150808T0049Z-150808T0115Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
649 PM MDT FRI AUG 7 2015
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN MORGAN COUNTY IN NORTHEASTERN COLORADO...
NORTH CENTRAL WASHINGTON COUNTY IN NORTHEASTERN COLORADO...
* UNTIL 715 PM MDT
* AT 649 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR BRUSH...OR 10 MILES EAST OF FORT MORGAN...
MOVING EAST AT 30 MPH.
HAZARD...TORNADO AND PING PONG 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...
BRUSH...HILLROSE...SNYDER...MIDWAY AND GARY.
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 YOU ARE IN A MOBILE
HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4034 10331 4003 10336 4010 10377 4030 10372
4035 10357
TIME...MOT...LOC 0049Z 247DEG 27KT 4022 10360
TORNADO...RADAR INDICATED
HAIL...1.50IN
$$
RJK1 follow-up statement
134
WWUS55 KBOU 080106
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
706 PM MDT FRI AUG 7 2015
COC087-121-080115-
/O.EXP.KBOU.TO.W.0050.000000T0000Z-150808T0115Z/
MORGAN CO-WASHINGTON CO-
706 PM MDT FRI AUG 7 2015
...THE TORNADO WARNING FOR SOUTHEASTERN MORGAN AND NORTH CENTRAL
WASHINGTON COUNTIES WILL EXPIRE AT 715 PM MDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT FOR
NORTHEASTERN COLORADO.
LAT...LON 4034 10331 4003 10336 4010 10377 4030 10372
4035 10357
TIME...MOT...LOC 0103Z 247DEG 27KT 4022 10360
$$
RJKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 6:14 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 31 min |
| Aug 7, 6:33 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Washington | 42 min |
| Aug 7, 6:33 PM MDT | Tornado Warning | BOU | Washington | 27 min |
| Aug 7, 6:54 PM MDT | Tornado Warning | BOU | Washington | 25 min |
| Aug 7, 7:22 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 38 min |
| Aug 7, 7:25 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 50 min |
| Aug 7, 9:52 PM MDT | Areal Flood Advisory | BOU | Washington | 3 hr |
Nearby
Tornado Warnings in Colorado, 2015Every tornado warning in 2015Tornadoes in 2015
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.