Alert archive / Wyoming / Tornado Warnings in 2014

Tornado Warning 13, NWS Cheyenne, WY

July 13, 2014Laramie County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Jul 13, 2014, 1:22 PM MDT for Laramie County, Wyoming. It was in force for 38 min. 8 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 13, 2014, 1:22 PM MDT (19:22 UTC)
Expired: Jul 13, 2014, 2:00 PM MDT
In force: 38 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), 7 km from the middle of the area, began a volume at 19:23 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 13, 1:23 PM MDT	TSTM WND GST 50	8 N Cheyenne, WY	GUSTS 40-50 MPH
Jul 13, 1:30 PM MDT	FUNNEL CLOUD	1 S Cheyenne, WY	SPOTTER REPORTED FUNNEL CLOUD NEAR OUTBACK STEAKHOUSE.
Jul 13, 1:33 PM MDT	TSTM WND GST 58	Cheyenne, WY	1.38 INCHES OF RAIN IN LESS THAN 30 MINUTES.
Jul 13, 1:33 PM MDT	TSTM WND GST 58	Cheyenne, WY
Jul 13, 1:33 PM MDT	TSTM WND GST 58	Cheyenne, WY	1.38 INCHES OF RAIN IN LESS THAN 30 MINUTES.
Jul 13, 1:34 PM MDT	HAIL 0.25	Cheyenne, WY
Jul 13, 1:35 PM MDT	TSTM WND DMG	Cheyenne, WY	WIDESPREAD TREE DAMAGE REPORTED IN AND AROUND THE CITY OF CHEYENNE. LARGEST TREE DOWN WAS ABOUT ONE FOOT IN DIAMETER.
Jul 13, 1:40 PM MDT	TORNADO	9 E Cheyenne, WY	BRIEF TOUCH DOWN NEAR THE ARCHER EXIT OF I-80.

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, 7.4 hours before the alert went out and 189 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: 88 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 1036 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

231 
WFUS55 KCYS 131922
TORCYS
WYC021-132000-
/O.NEW.KCYS.TO.W.0013.140713T1922Z-140713T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
122 PM MDT SUN JUL 13 2014

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL LARAMIE COUNTY IN SOUTHEAST WYOMING...

* UNTIL 200 PM MDT

* AT 120 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR NORTH CHEYENNE...AND MOVING SOUTHEAST AT
  30 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL.

  SOURCE...WEATHER SPOTTERS REPORTED A ROTATING WALL 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 DANGEROUS STORM WILL BE NEAR...
  CHEYENNE AND FRONTIER PARK AROUND 130 PM MDT.
  ARCHER EXIT AROUND 140 PM MDT.

OTHER LOCATIONS IN THE WARNING INCLUDE SOUTH GREELEY HIGHWAY.

THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILEPOSTS 359 AND 371.

THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILEPOSTS 8 AND 9.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4124 10498 4131 10484 4100 10441 4100 10442
      4099 10476
TIME...MOT...LOC 1922Z 319DEG 27KT 4121 10484

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

$$

RUBIN

3 follow-up statements

001 
WWUS55 KCYS 131933
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
133 PM MDT SUN JUL 13 2014

WYC021-132000-
/O.CON.KCYS.TO.W.0013.000000T0000Z-140713T2000Z/
LARAMIE WY-
133 PM MDT SUN JUL 13 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL LARAMIE
COUNTY UNTIL 200 PM MDT...

AT 129 PM MDT...A ROTATING WALL CLOUD WAS LOCATED NEAR FRONTIER 
PARK...AND MOVING SOUTHEAST AT 30 MPH.

HAZARD...DAMAGING TORNADO AND QUARTER SIZE HAIL.

SOURCE...WEATHER SPOTTERS CONFIRMED ROTATING WALL 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 STORM WILL BE NEAR...
  ARCHER EXIT AROUND 140 PM MDT.

THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILEPOSTS 359 AND 371.

THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILEPOSTS 8 AND 9.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4119 10494 4127 10479 4100 10441 4099 10476
TIME...MOT...LOC 1932Z 319DEG 27KT 4115 10480

TORNADO...OBSERVED
HAIL...1.00IN

$$

RUBIN

498 
WWUS55 KCYS 131947
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
147 PM MDT SUN JUL 13 2014

WYC021-132000-
/O.CON.KCYS.TO.W.0013.000000T0000Z-140713T2000Z/
LARAMIE WY-
147 PM MDT SUN JUL 13 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL LARAMIE
COUNTY UNTIL 200 PM MDT...

AT 140 PM MDT...A CONFIRMED TORNADO WAS LOCATED NEAR THE ARCHER EXIT
10 MILES EAST OF CHEYENNE. THE SPOTTER THEN REPORTED THE TORNADO 
LIFTED.

HAZARD...DAMAGING TORNADO AND QUARTER 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 TORNADIC STORM WILL AFFECT MAINLY RURAL AREAS OF SOUTH CENTRAL
LARAMIE COUNTY.

THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILEPOSTS 359 AND 371.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT...PARK YOUR VEHICLE AND STAY PUT.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4113 10488 4119 10467 4100 10441 4099 10476
TIME...MOT...LOC 1945Z 319DEG 27KT 4107 10474

TORNADO...OBSERVED
HAIL...1.00IN

$$

RUBIN

629 
WWUS55 KCYS 131956
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
156 PM MDT SUN JUL 13 2014

WYC021-132006-
/O.EXP.KCYS.TO.W.0013.000000T0000Z-140713T2000Z/
LARAMIE WY-
156 PM MDT SUN JUL 13 2014

...THE TORNADO WARNING FOR SOUTH CENTRAL LARAMIE COUNTY WILL EXPIRE
AT 200 PM MDT...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT
FOR THE AREA.

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL 
LARAMIE COUNTY UNTIL 300 PM MDT.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN CHEYENNE.

LAT...LON 4113 10488 4119 10467 4100 10441 4099 10476
TIME...MOT...LOC 1956Z 319DEG 27KT 4101 10467

$$

RUBIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 11:43 AM MDT	Special Weather Statement	CYS	Albany	62 min
Jul 13, 11:45 AM MDT	Special Weather Statement	CYS	Platte	60 min
Jul 13, 11:51 AM MDT	Severe Thunderstorm Warning	CYS	Albany, Platte	54 min
Jul 13, 12:29 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Platte	46 min
Jul 13, 12:39 PM MDT	Special Weather Statement	CYS	Laramie	66 min
Jul 13, 12:53 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	67 min
Jul 13, 12:56 PM MDT	Special Weather Statement	CYS	Platte	49 min
Jul 13, 12:58 PM MDT	Special Weather Statement	CYS	Goshen	47 min
Jul 13, 1:11 PM MDT	Severe Thunderstorm Warning	CYS	Laramie, Platte	28 min
Jul 13, 1:42 PM MDT	Flash Flood Warning	CYS	Laramie	3 hr
Jul 13, 1:55 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	27 min
Jul 13, 2:00 PM MDT	Special Weather Statement	CYS	Laramie	60 min
Jul 13, 5:48 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	42 min

Nearby

Tornado Warnings in Wyoming, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.