Alert archive / Colorado / Tornado Warnings in 2018
Tornado Warning 15, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at May 28, 2018, 6:35 PM MDT for Morgan County, Colorado. It was in force for 25 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
- May 28, 2018, 6:35 PM MDT (00:35 UTC)
- Expired
- May 28, 2018, 7:00 PM MDT
- In force
- 25 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Morgan County, CO
The radar
The Denver radar (KFTG), 104 km from the middle of the area, began a volume at 00:38 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 |
|---|---|---|---|
| May 28, 2:01 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.6 hours before the alert went out and 265 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
- 410 J/kg
- Mixed-layer CIN
- -333 J/kg
- Mixed-layer LCL
- 1525 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
010
WFUS55 KBOU 290035
TORBOU
COC087-290100-
/O.NEW.KBOU.TO.W.0015.180529T0035Z-180529T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
635 PM MDT MON MAY 28 2018
The National Weather Service in Denver Colorado has issued a
* Tornado Warning for...
Northeastern Morgan County in northeastern Colorado...
* Until 700 PM MDT.
* At 634 PM MDT, a severe thunderstorm capable of producing a tornado
was located 5 miles northwest of Brush, or 6 miles northeast of
Fort Morgan, moving northeast at 25 mph.
HAZARD...Tornado.
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, Antelope Springs and Snyder.
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 4038 10346 4035 10346 4034 10347 4024 10364
4033 10384 4052 10374
TIME...MOT...LOC 0034Z 229DEG 21KT 4032 10369
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
KRIEDERMAN2 follow-up statements
655
WWUS55 KBOU 290045
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
645 PM MDT MON MAY 28 2018
COC087-290100-
/O.CON.KBOU.TO.W.0015.000000T0000Z-180529T0100Z/
Morgan CO-
645 PM MDT MON MAY 28 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR
NORTHEASTERN MORGAN COUNTY...
At 645 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Snyder, or 11 miles northeast of Fort Morgan, moving
northeast at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Hillrose, Antelope Springs and Snyder.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4038 10346 4035 10346 4034 10347 4026 10360
4046 10377 4052 10374
TIME...MOT...LOC 0045Z 229DEG 21KT 4036 10362
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
KRIEDERMAN555
WWUS55 KBOU 290057
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
657 PM MDT MON MAY 28 2018
COC087-290107-
/O.EXP.KBOU.TO.W.0015.000000T0000Z-180529T0100Z/
Morgan CO-
657 PM MDT MON MAY 28 2018
...THE TORNADO WARNING FOR NORTHEASTERN MORGAN COUNTY WILL EXPIRE AT
700 PM MDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
A Tornado Watch remains in effect until 900 PM MDT for northeastern
Colorado.
A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
northeastern Colorado.
LAT...LON 4038 10346 4035 10346 4034 10347 4026 10360
4046 10377 4052 10374
TIME...MOT...LOC 0057Z 229DEG 21KT 4036 10363
$$
KRIEDERMANThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 6:04 PM MDT | Tornado Warning | BOU | Logan | 26 min |
| May 28, 6:28 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 32 min |
| May 28, 6:37 PM MDT | Tornado Warning | BOU | Weld | 23 min |
| May 28, 6:52 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 23 min |
| May 29, 12:43 AM MDT | Special Weather Statement | BOU | Lincoln | 47 min |
| May 29, 1:30 AM MDT | Special Weather Statement | BOU | Lincoln | 45 min |
| May 29, 1:43 AM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 32 min |
| May 29, 12:18 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 27 min |
| May 29, 1:31 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 26 min |
| May 29, 2:29 PM MDT | Special Weather Statement | BOU | Lincoln | 46 min |
| May 29, 3:29 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 46 min |
| May 29, 5:02 PM MDT | Special Weather Statement | BOU | Washington | 43 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.