Alert archive / Wyoming / Tornado Warnings in 2018
Tornado Warning 23, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jul 28, 2018, 3:49 PM MDT for Albany County, Converse County, Platte County, Wyoming. It was in force for 41 min. 6 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 28, 2018, 3:49 PM MDT (21:49 UTC)
- Expired
- Jul 28, 2018, 4:30 PM MDT
- In force
- 41 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.75 in
Counties Albany County, WY, Converse County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 178 km from the middle of the area, began a volume at 21:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 28, 3:53 PM MDT | TORNADO | 5 Sw Douglas, WY | MOVING SOUTHEAST |
| Jul 28, 3:55 PM MDT | TORNADO | 3 S Douglas, WY | MOVING SOUTHEAST |
| Jul 28, 3:56 PM MDT | TORNADO | 8 Wnw Douglas, WY | MOVING TO THE SOUTHEAST |
| Jul 28, 3:59 PM MDT | TORNADO | 12 Sw Douglas, WY | TORNADO PRODUCED DAMAGE ON RANCH. ROOF TAKEN OFF OF THE RANCH HOUSE. SEVERAL OUTBUILDINGS DAMAGED OR DESTROYED. SEVERAL FUEL TANKS OVERTURNED. |
| Jul 28, 3:59 PM MDT | TORNADO | 12 W Douglas, WY | AYERS NATURAL BRIDGE. |
| Jul 28, 4:25 PM MDT | TORNADO | 15 W Glendo, WY |
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 28, 2:34 PM MDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 9.8 hours before the alert went out and 245 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
- 33 J/kg
- Mixed-layer CIN
- -324 J/kg
- Mixed-layer LCL
- 1147 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 407 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
556
WFUS55 KCYS 282149
TORCYS
WYC001-009-031-282230-
/O.NEW.KCYS.TO.W.0023.180728T2149Z-180728T2230Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cheyenne WY
349 PM MDT SAT JUL 28 2018
The National Weather Service in Cheyenne has issued a
* Tornado Warning for...
Northeastern Albany County in southeastern Wyoming...
Northwestern Platte County in southeastern Wyoming...
Southeastern Converse County in east central Wyoming...
* Until 430 PM MDT.
* At 347 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Laprele Reservoir, or 8 miles west of Douglas,
moving southeast at 30 mph.
HAZARD...Tornado and golf ball size hail.
SOURCE...Radar indicated rotation. This storm has a history of
producing tornadoes. A new tornado may develop at any
time!
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.
* This dangerous storm will be near...
Douglas around 405 PM MDT.
This includes Interstate 25 in Wyoming between mile markers 113 and
154.
This replaces the Tornado Warning which was previously in effect for
the warned area.
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 4290 10554 4257 10494 4223 10548 4278 10573
TIME...MOT...LOC 2147Z 314DEG 27KT 4278 10556
TORNADO...RADAR INDICATED
HAIL...1.75IN
$$
Hammer3 follow-up statements
218
WWUS55 KCYS 282159
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
359 PM MDT SAT JUL 28 2018
WYC001-009-031-282230-
/O.CON.KCYS.TO.W.0023.000000T0000Z-180728T2230Z/
Albany WY-Platte WY-Converse WY-
359 PM MDT SAT JUL 28 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM MDT FOR
NORTHEASTERN ALBANY...NORTHWESTERN PLATTE AND SOUTHEASTERN CONVERSE
COUNTIES...
At 359 PM MDT, a confirmed tornado was located near Douglas, moving
southeast at 30 mph.
HAZARD...Damaging tornado and golf ball size hail.
SOURCE...Weather spotters confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Esterbrook Campground around 430 PM MDT.
This includes Interstate 25 in Wyoming between mile markers 113 and
146.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4257 10494 4223 10548 4269 10566 4284 10543
TIME...MOT...LOC 2159Z 315DEG 28KT 4268 10548
TORNADO...OBSERVED
HAIL...1.75IN
$$
Hammer221
WWUS55 KCYS 282206
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
406 PM MDT SAT JUL 28 2018
WYC001-009-031-282230-
/O.CON.KCYS.TO.W.0023.000000T0000Z-180728T2230Z/
Albany WY-Platte WY-Converse WY-
406 PM MDT SAT JUL 28 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM MDT FOR
NORTHEASTERN ALBANY...NORTHWESTERN PLATTE AND SOUTHEASTERN CONVERSE
COUNTIES...
At 406 PM MDT, a confirmed tornado was located 10 miles southeast of
Laprele Reservoir, or 11 miles south of Douglas, moving southeast at
35 mph.
HAZARD...Damaging tornado and golf ball size hail.
SOURCE...Weather spotters confirmed tornado.
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.
This tornado will be near...
Esterbrook around 425 PM MDT.
Esterbrook Campground and Harris Park around 430 PM MDT.
This includes Interstate 25 in Wyoming between mile markers 113 and
138.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. 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 4257 10494 4225 10545 4265 10559 4277 10532
TIME...MOT...LOC 2206Z 323DEG 31KT 4259 10546
TORNADO...OBSERVED
HAIL...1.75IN
$$
Hammer017
WWUS55 KCYS 282218
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
418 PM MDT SAT JUL 28 2018
WYC001-009-031-282230-
/O.CON.KCYS.TO.W.0023.000000T0000Z-180728T2230Z/
Albany WY-Platte WY-Converse WY-
418 PM MDT SAT JUL 28 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM MDT FOR
NORTHEASTERN ALBANY...NORTHWESTERN PLATTE AND SOUTHEASTERN CONVERSE
COUNTIES...
At 418 PM MDT, a confirmed large tornado was located near Esterbrook
Campground, or 18 miles south of Douglas, moving south at 35 mph.
HAZARD...Damaging tornado.
SOURCE...Weather spotters confirmed tornado.
IMPACT...You are in a life-threatening situation. Flying debris may
be deadly to those caught without shelter. Mobile homes
will be destroyed. Considerable damage to homes,
businesses, and vehicles is likely and complete destruction
is possible.
The tornado will be near...
Esterbrook and Esterbrook Campground around 425 PM MDT.
Harris Park around 430 PM MDT.
This includes Interstate 25 in Wyoming between mile markers 113 and
126.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to a basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4225 10545 4254 10555 4266 10521 4255 10497
TIME...MOT...LOC 2218Z 345DEG 29KT 4249 10537
TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...1.75IN
$$
HammerThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 6:08 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Converse, Platte | 52 min |
| Jul 27, 7:04 PM MDT | Special Weather Statement | CYS | Platte | 41 min |
| Jul 27, 7:09 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Platte | 29 min |
| Jul 27, 8:01 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 29 min |
| Jul 27, 8:25 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 50 min |
| Jul 27, 9:03 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 42 min |
| Jul 27, 9:25 PM MDT | Special Weather Statement | CYS | Converse | 50 min |
| Jul 27, 9:31 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 29 min |
| Jul 27, 9:36 PM MDT | Special Weather Statement | CYS | Niobrara | 39 min |
| Jul 28, 3:02 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 43 min |
| Jul 28, 3:12 PM MDT | Tornado Warning | CYS | Converse | 48 min |
| Jul 28, 3:27 PM MDT | Tornado Warning | CYS | Goshen, Platte | 33 min |
| Jul 28, 3:32 PM MDT | Severe Thunderstorm Warning | CYS | Converse, Niobrara, Platte | 43 min |
| Jul 28, 3:55 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie | 35 min |
| Jul 28, 4:26 PM MDT | Tornado Warning | CYS | Albany, Converse, Platte | 34 min |
| Jul 28, 4:29 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 46 min |
| Jul 28, 4:53 PM MDT | Tornado Warning | CYS | Goshen, Platte | 52 min |
| Jul 28, 5:30 PM MDT | Special Weather Statement | CYS | Converse | 45 min |
| Jul 28, 5:43 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Platte | 47 min |
| Jul 28, 5:56 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 64 min |
Nearby
Tornado Warnings in Wyoming, 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.