Alert archive / Wyoming / Tornado Warnings in 2019

Tornado Warning 2, NWS Cheyenne, WY

May 6, 2019Laramie County, Wyoming

NWS Cheyenne, WY issued this tornado warning at May 6, 2019, 3:41 PM MDT for Laramie County, Wyoming. It was in force for 34 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: May 6, 2019, 3:41 PM MDT (21:41 UTC)
Expired: May 6, 2019, 4:15 PM MDT
In force: 34 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Laramie County, WY

The radar

The Cheyenne radar (KCYS), 19 km from the middle of the area, began a volume at 21:42 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
May 6, 3:43 PM MDT	FUNNEL CLOUD	2 Nnw North Cheyenne, WY	PHOTO SUBMITTED VIA FACEBOOK OF CONDENSATION FUNNEL NORTHEAST OF CHEYENNE.
May 6, 3:50 PM MDT	HAIL 1	6 Nnw North Cheyenne, WY
May 6, 4:00 PM MDT	HAIL 0.25	5 Nne North Cheyenne, WY	REPORTED ACCUMULATED HAIL ON US 85.
May 6, 4:00 PM MDT	TORNADO	5 E North Cheyenne, WY	BRIEF TOUCHDOWN REPORTED BUT QUICKLY LIFTED SHORTLY AFTER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 9.7 hours before the alert went out and 200 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1072 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

007 
WFUS55 KCYS 062141
TORCYS
WYC021-062215-
/O.NEW.KCYS.TO.W.0002.190506T2141Z-190506T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cheyenne WY
341 PM MDT Mon May 6 2019

The National Weather Service in Cheyenne has issued a

* Tornado Warning for...
  Central Laramie County in southeastern Wyoming...

* Until 415 PM MDT.

* At 341 PM MDT, a severe thunderstorm capable of producing a tornado
  was located near North Cheyenne, or 9 miles north of Cheyenne,
  moving east at 30 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Weather spotters reported funnel cloud. 

  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 tornadic thunderstorm will remain over mainly rural areas of
  central Laramie County.

This includes Interstate 25 in Wyoming between mile markers 16 and
22.
 
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 4120 10485 4130 10488 4151 10445 4126 10433
TIME...MOT...LOC 2141Z 249DEG 24KT 4128 10476 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Worley

4 follow-up statements

562 
WWUS55 KCYS 062145
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
345 PM MDT Mon May 6 2019

WYC021-062215-
/O.CON.KCYS.TO.W.0002.000000T0000Z-190506T2215Z/
Laramie WY-
345 PM MDT Mon May 6 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM MDT FOR CENTRAL
LARAMIE COUNTY...
        
At 345 PM MDT, a severe thunderstorm capable of producing a tornado
was located near North Cheyenne, or 10 miles north of Cheyenne,
moving east at 30 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Weather spotters reported a funnel cloud.

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...
North Cheyenne and Ranchettes. 

This includes Interstate 25 in Wyoming between mile markers 18 and
19.
 
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 4120 10483 4130 10485 4151 10445 4126 10433
TIME...MOT...LOC 2145Z 249DEG 24KT 4129 10472 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Worley

889 
WWUS55 KCYS 062151
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
351 PM MDT Mon May 6 2019

WYC021-062215-
/O.CON.KCYS.TO.W.0002.000000T0000Z-190506T2215Z/
Laramie WY-
351 PM MDT Mon May 6 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM MDT FOR CENTRAL
LARAMIE COUNTY...
        
At 351 PM MDT, a severe thunderstorm capable of producing a tornado
was located 8 miles northeast of North Cheyenne, or 12 miles
northeast of Cheyenne, moving east at 30 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Weather spotters reported a funnel cloud.

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...
North Cheyenne and Ranchettes. 

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 4120 10482 4131 10481 4146 10444 4126 10433
TIME...MOT...LOC 2151Z 249DEG 24KT 4130 10467 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Worley

769 
WWUS55 KCYS 062159
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
359 PM MDT Mon May 6 2019

WYC021-062215-
/O.CON.KCYS.TO.W.0002.000000T0000Z-190506T2215Z/
Laramie WY-
359 PM MDT Mon May 6 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM MDT FOR CENTRAL
LARAMIE COUNTY...
        
At 359 PM MDT, a severe thunderstorm capable of producing a tornado
was located 9 miles northwest of Hillsdale, or 15 miles northeast of
Cheyenne, moving east at 30 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Weather spotters reported a funnel cloud.

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...
Ranchettes.

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 4121 10476 4130 10480 4146 10444 4126 10433
TIME...MOT...LOC 2159Z 249DEG 24KT 4132 10460 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Worley

045 
WWUS55 KCYS 062212
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
412 PM MDT Mon May 6 2019

WYC021-062221-
/O.EXP.KCYS.TO.W.0002.000000T0000Z-190506T2215Z/
Laramie WY-
412 PM MDT Mon May 6 2019

...THE TORNADO WARNING FOR CENTRAL LARAMIE COUNTY WILL EXPIRE AT 415
PM MDT...
    
The Tornado Warning that was previously in effect has been reissued 
for central Laramie County and is in effect until 430 PM. Please 
refer to that bulletin for the latest severe weather information. 
However small hail is still possible with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Cheyenne.

Remember, a Tornado Warning still remains in effect for central 
Laramie County until 430 PM.

LAT...LON 4121 10476 4130 10480 4146 10444 4126 10433
TIME...MOT...LOC 2211Z 249DEG 24KT 4134 10452 

$$

Worley

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 6, 12:09 PM MDT	Special Weather Statement	CYS	Laramie	51 min
May 6, 12:47 PM MDT	Special Weather Statement	CYS	Goshen	28 min
May 6, 1:21 PM MDT	Special Weather Statement	CYS	Laramie	24 min
May 6, 1:43 PM MDT	Special Weather Statement	CYS	Laramie	32 min
May 6, 2:10 PM MDT	Special Weather Statement	CYS	Laramie	35 min
May 6, 2:25 PM MDT	Special Weather Statement	CYS	Laramie	35 min
May 6, 2:29 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	31 min
May 6, 3:12 PM MDT	Special Weather Statement	CYS	Laramie	33 min
May 6, 3:19 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	26 min
May 6, 3:38 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	37 min
May 6, 4:05 PM MDT	Tornado Warning	CYS	Laramie	25 min
May 6, 4:23 PM MDT	Tornado Warning Tornado observed	CYS	Laramie	22 min
May 6, 4:34 PM MDT	Special Weather Statement	CYS	Laramie	26 min
May 6, 4:37 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	23 min
May 6, 4:42 PM MDT	Special Weather Statement	CYS	Carbon	33 min
May 6, 4:55 PM MDT	Severe Thunderstorm Warning	CYS	Carbon	50 min
May 6, 4:56 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	34 min
May 6, 5:35 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	25 min
May 6, 5:47 PM MDT	Special Weather Statement	CYS		43 min

Nearby

Tornado Warnings in Wyoming, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.