Alert archive / Wyoming / Tornado Warnings in 2019

Tornado Warning 2, NWS Riverton, WY

July 1, 2019Hot Springs County, Wyoming

NWS Riverton, WY issued this tornado warning at Jul 1, 2019, 1:11 PM MDT for Hot Springs County, Wyoming. It was in force for 34 min. 2 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 1, 2019, 1:11 PM MDT (19:11 UTC)
Expired: Jul 1, 2019, 1:45 PM MDT
In force: 34 min
Issued by: NWS Riverton, WY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.0 in

County Hot Springs County, WY

The radar

The Riverton/Lander radar (KRIW), 67 km from the middle of the area, began a volume at 19:11 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 1, 1:42 PM MDT	HAIL 1.75	Thermopolis, WY
Jul 1, 1:49 PM MDT	HAIL 2	Thermopolis, WY	2 INCH HAIL REPORTED AT HOT SPRINGS STATE PARK.

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

The nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 7.2 hours before the alert went out and 65 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: 22 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 1225 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

926 
WFUS55 KRIW 011911
TORRIW
WYC017-011945-
/O.NEW.KRIW.TO.W.0002.190701T1911Z-190701T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Riverton WY
111 PM MDT Mon Jul 1 2019

The National Weather Service in Riverton has issued a

* Tornado Warning for...
  Southeastern Hot Springs County in central Wyoming...

* Until 145 PM MDT.
    
* At 111 PM MDT, a severe thunderstorm capable of producing a tornado
  was located 9 miles southeast of Hamilton Dome, which is 10 miles
  west of Thermopolis, moving east at 25 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.

* This dangerous storm will be near...
  Lucerne and Hot Springs State Park around 135 PM MDT.
  Thermopolis around 140 PM MDT.

Other locations impacted by this tornadic thunderstorm include Hot
Springs County Fairgrounds and Hot Springs County Airport.

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 4371 10795 4347 10807 4347 10810 4362 10853
      4379 10846
TIME...MOT...LOC 1911Z 288DEG 24KT 4369 10843 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

Straub

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 6:06 PM MDT	Special Weather Statement	RIW	Johnson	84 min
Jul 1, 5:09 AM MDT	Special Weather Statement	RIW		36 min
Jul 1, 5:41 AM MDT	Special Weather Statement	RIW		34 min
Jul 1, 6:11 AM MDT	Special Weather Statement	RIW		34 min
Jul 1, 6:40 AM MDT	Special Weather Statement	RIW	Park	35 min
Jul 1, 7:15 AM MDT	Special Weather Statement	RIW	Teton	30 min
Jul 1, 9:13 AM MDT	Special Weather Statement	RIW	Park	32 min
Jul 1, 11:53 AM MDT	Special Weather Statement	RIW		22 min
Jul 1, 12:12 PM MDT	Special Weather Statement	RIW	Hot Springs	33 min
Jul 1, 12:33 PM MDT	Special Weather Statement	RIW	Fremont	27 min
Jul 1, 12:51 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	39 min
Jul 1, 12:55 PM MDT	Severe Thunderstorm Warning	RIW	Hot Springs	50 min
Jul 1, 1:06 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	39 min
Jul 1, 1:22 PM MDT	Special Weather Statement	RIW	Sublette	23 min
Jul 1, 1:28 PM MDT	Severe Thunderstorm Warning	RIW	Johnson, Natrona	47 min
Jul 1, 1:41 PM MDT	Tornado Warning	RIW	Hot Springs	34 min
Jul 1, 1:42 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Hot Springs	16 min
Jul 1, 1:51 PM MDT	Special Weather Statement	RIW	Sublette	24 min
Jul 1, 1:57 PM MDT	Severe Thunderstorm Warning	RIW	Sublette	35 min
Jul 1, 2:01 PM MDT	Special Weather Statement	RIW	Sublette	29 min
Jul 1, 2:03 PM MDT	Special Weather Statement	RIW	Fremont	27 min
Jul 1, 2:06 PM MDT	Severe Thunderstorm Warning	RIW	Hot Springs	39 min
Jul 1, 2:11 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	19 min
Jul 1, 2:12 PM MDT	Special Weather Statement	RIW		33 min
Jul 1, 2:32 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	43 min
Jul 1, 2:44 PM MDT	Severe Thunderstorm Warning	RIW	Hot Springs, Natrona, Washakie	46 min
Jul 1, 2:49 PM MDT	Special Weather Statement	RIW	Washakie	26 min
Jul 1, 3:05 PM MDT	Severe Thunderstorm Warning	RIW	Big Horn, Park	40 min
Jul 1, 3:08 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	52 min
Jul 1, 3:26 PM MDT	Special Weather Statement	RIW		34 min
Jul 1, 3:42 PM MDT	Special Weather Statement	RIW	Big Horn	33 min
Jul 1, 3:45 PM MDT	Special Weather Statement	RIW	Johnson	30 min
Jul 1, 3:48 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	42 min
Jul 1, 3:50 PM MDT	Severe Thunderstorm Warning	RIW	Johnson, Natrona	40 min
Jul 1, 4:27 PM MDT	Special Weather Statement	RIW		33 min
Jul 1, 5:41 PM MDT	Special Weather Statement	RIW	Natrona	49 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.