Alert archive / Colorado / Tornado Warnings in 2018
Tornado Warning 45, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jul 29, 2018, 4:37 PM MDT for Logan County, Morgan County, Washington County, Colorado. It was in force for 23 min. 4 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
- Jul 29, 2018, 4:37 PM MDT (22:37 UTC)
- Expired
- Jul 29, 2018, 5:00 PM MDT
- In force
- 23 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 2.0 in
Counties Logan County, CO, Morgan County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 106 km from the middle of the area, began a volume at 22:37 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 |
|---|---|---|---|
| Jul 29, 4:48 PM MDT | TORNADO | 2 Ese Brush, CO | SPOTTER REPORTED MANY DOWNED TREES WITH DEBRIS FLYING IN THE AIR AND HITTING HIS CAR. |
| Jul 29, 4:49 PM MDT | TORNADO | 1 Ne Brush, CO | SMALL AIRPORT DESTROYED NEAR BRUSH...PLANES FLIPPED OVER...ROOFS BLOWN OFF HOMES...MAJOR TREE DAMAGE. |
| Jul 29, 4:53 PM MDT | TORNADO | 2 Ne Brush, CO | INTERSECTION OF HIGHWAY 34 AND 71...POWER POLES SNAPPED, STREET SIGNS RIPPED OUT OF THE GROUND. |
| Jul 29, 5:07 PM MDT | TSTM WND GST 74 | Akron, CO |
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 |
|---|---|---|---|
| Jul 29, 1:07 PM MDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 10.6 hours before the alert went out and 52 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
- 181 J/kg
- Mixed-layer CIN
- -407 J/kg
- Mixed-layer LCL
- 1180 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 208 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
451
WFUS55 KBOU 292237
TORBOU
COC075-087-121-292300-
/O.NEW.KBOU.TO.W.0045.180729T2237Z-180729T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
437 PM MDT SUN JUL 29 2018
The National Weather Service in Denver Colorado has issued a
* Tornado Warning for...
Northeastern Morgan County in northeastern Colorado...
North central Washington County in northeastern Colorado...
South central Logan County in northeastern Colorado...
* Until 500 PM MDT.
* At 437 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Hillrose, or 14 miles northeast of Fort Morgan,
moving southeast at 50 mph.
HAZARD...Tornado and hail up to two inches in diameter.
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...
Akron, Brush, Merino, Hillrose, Prewitt Reservoir, Snyder and
Midway.
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 outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4034 10372 4049 10363 4049 10349 4047 10320
4013 10309 3996 10344 4015 10361
TIME...MOT...LOC 2237Z 326DEG 44KT 4035 10355
TORNADO...RADAR INDICATED
HAIL...2.00IN
$$
RJK1 follow-up statement
966
WWUS55 KBOU 292251
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
451 PM MDT SUN JUL 29 2018
COC075-292301-
/O.CAN.KBOU.TO.W.0045.000000T0000Z-180729T2300Z/
Logan CO-
451 PM MDT SUN JUL 29 2018
...THE TORNADO WARNING FOR SOUTH CENTRAL LOGAN COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 900 PM MDT for northeastern
Colorado.
LAT...LON 4031 10369 4041 10358 4040 10346 4038 10324
4013 10309 3996 10344 4015 10361
TIME...MOT...LOC 2251Z 326DEG 44KT 4021 10342
$$
COC087-121-292300-
/O.CON.KBOU.TO.W.0045.000000T0000Z-180729T2300Z/
Morgan CO-Washington CO-
451 PM MDT SUN JUL 29 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM MDT FOR EAST
CENTRAL MORGAN AND NORTH CENTRAL WASHINGTON COUNTIES...
At 451 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Midway, or 11 miles west of Akron, moving southeast
at 50 mph.
HAZARD...Tornado and two inch 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...
Akron, Brush, Hillrose, Snyder and Midway.
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 outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4031 10369 4041 10358 4040 10346 4038 10324
4013 10309 3996 10344 4015 10361
TIME...MOT...LOC 2251Z 326DEG 44KT 4021 10342
TORNADO...RADAR INDICATED
HAIL...2.00IN
$$
RJKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 6:28 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 47 min |
| Jul 28, 6:54 PM MDT | Tornado Warning | BOU | Logan | 22 min |
| Jul 28, 7:13 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 32 min |
| Jul 28, 7:50 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 40 min |
| Jul 28, 8:23 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 52 min |
| Jul 29, 2:47 PM MDT | Tornado Warning | BOU | Weld | 28 min |
| Jul 29, 3:06 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 39 min |
| Jul 29, 3:16 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Weld | 44 min |
| Jul 29, 3:32 PM MDT | Tornado Warning | BOU | Weld | 43 min |
| Jul 29, 3:44 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 46 min |
| Jul 29, 4:00 PM MDT | Tornado Warning | BOU | Weld | 30 min |
| Jul 29, 4:10 PM MDT | Tornado Warning | BOU | Logan, Morgan, Washington, Weld | 35 min |
| Jul 29, 4:26 PM MDT | Tornado Warning | BOU | Morgan, Weld | 34 min |
| Jul 29, 4:31 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 29 min |
| Jul 29, 4:58 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 25 min |
| Jul 29, 5:01 PM MDT | Tornado Warning | BOU | Morgan, Washington | 44 min |
| Jul 29, 5:32 PM MDT | Tornado Warning | BOU | Lincoln, Washington | 28 min |
| Jul 29, 5:54 PM MDT | Severe Thunderstorm Warning | BOU | Larimer | 51 min |
| Jul 29, 5:57 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln, Washington | 23 min |
Nearby
Tornado Warnings in Colorado, 2018Every tornado warning in 2018Tornadoes in 2018
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.