Severe Thunderstorm Warning 11, NWS Riverton, WY

Issued

Jun 2, 2002, 5:53 PM MDT (23:53 UTC)

Expired

Jun 2, 2002, 6:15 PM MDT

In force

22 min

Issued by

NWS Riverton, WY

Area

Whole counties

Counties Johnson County, WY, Natrona County, WY

The Riverton/Lander radar (KRIW), 152 km from the middle of the area, began a volume at 23:53 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.

240 
WUUS55 KRIW 022353
SVRRIW
WYC019-025-030015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RIVERTON WY
550 PM MDT SUN JUN 2 2002

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN NATRONA COUNTY IN CENTRAL WYOMING
  JOHNSON COUNTY IN NORTH CENTRAL WYOMING

* UNTIL 615 PM MDT

* AT 550 PM MDT...COUNTY EMERGENCY MANAGEMENT REPORTED A LINE OF 
SEVERE  THUNDERSTORMS...PRODUCING WIND GUSTS FROM 60 TO 80 MPH... 
FROM 25 MILES SOUTHWEST OF MAYOWORTH TO 17 MILES SOUTHEAST OF 
EDGERTON...OR FROM 49 MILES   SOUTHEAST OF WORLAND TO 25 MILES NORTH 
OF EVANSVILLE.  DOPPLER RADAR INDICATED THE STORMS MOVING NORTHEAST 
AT 20 MPH.

THE SEVERE THUNDERSTORMS ARE CAPABLE OF PRODUCING...
 DAMAGING WINDS GREATER THAN 60 MILES AN HOUR.
 FREQUENT CLOUD-TO-GROUND LIGHTNING.

STRONG AND DAMAGING WINDS ARE LIKELY FROM THIS STORM...BUT THERE WILL
BE LITTLE RAIN. TAKE COVER IN A STURDY STRUCTURE UNTIL THE STORM
PASSES.

IF YOU ARE CAUGHT OUTSIDE... SEEK REFUGE FROM THE STORM IN A STRONG
BUILDING. BOATERS ON AREA LAKES SHOULD TAKE SHELTER. DAMAGING WIND...
AND DANGEROUS LIGHTNING ARE ALL LIKELY. DO NOT SEEK SHELTER UNDER TREES 
OR OTHER ISOLATED TALL OBJECTS.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN RIVERTON.



$$
LAT...LON 4352 10710 4314 10608 4422 10603 4427 10714

STASSER

WCJIN-WYNE

NWS Riverton, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 2, 2:30 PM MDT, 3 hours 23 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RIVERTON WY
230 PM MDT SUN JUN 2 2002

MOCLDY W HALF OF CWA WITH SCT SHRA/TS WHILE N/CENT HAS SEEN STG TO
SVR TS THIS PM. CONVCTN FORMING FM KBYG TO KCPR NOW. SATL LOOPS SHOW
UPR TROF OVR WRN U.S. WITH SHRTWV MOVG THRU ID/UT WITH THE TS FORMING
AHEAD OF IT. FCST PROB TNGT WL BE SHRA/TS COVERAGE. ISOLD TO LOW SCT
POPS FOR MOST OF CWA TNGT WITH HIR POPS IN THE NW CRNR WHR SOME PCPN
WL LAST ALL NT. COOL AIR FM THE N WL EASE INTO CENT WY OVRNT. ON MON
WRN CWA WL HAVE MORE SUNSHINE THAN E CWA AND THUS WL BCM MORE UNSTBL
LEADING TO SCT CONVCTN W OF THE CONT DIVIDE. E OF THE CONT DIVIDE
MODELS HINT AT COOL MORE STABLE AIRMASS. UPSLOPE LOOKS BTR FOR
KCPR/KBYG AREA THAN CENT BASINS. IN FACT IF CENT BASINS GET ENOUGH
SUNSHINE SOME CONVCTN WL OCCUR LATE IN DAY. WL PLAY FOR SOME SUN AND
PM CONVCTN. COOLER HIGHS OVERALL CENT/E. LINGERING EVE CONVCTN CENT
AND W THEN PTCLY. ON TUE AM TROF FINALLY PASSES THRU CWA WITH
IMPROVING WX CONDS. SOME WARMING OF HIGHS ALL AREAS. IN EXTNDD WED
LOOKS DRY WITH WNW FLOW AND THU LOOKS DRY WITH W FLOW ALF. PSBL
SHRTWV FRI CLIPS NRN WY WITH POPS FOR NW MTNS MAINLY. THEN ANOTHER
TROF MOVES INTO RGN FOR SAT. WL PUT POPS IN ALL AREAS FOR SAT. DRY
AND COOL FOR SUNDAY.

.RIW...NONE.

AR

In the hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RIVERTON, WY
520 PM MDT SUN JUN 2 2002

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1240 PM    WINCHESTER                WY   .75 INCH HAIL
06/02/02   WASHAKIE                       REPORTED BY SPOTTERS

1239 PM    16 W WORLAND              WY   1.00 INCH HAIL
06/02/02   WASHAKIE                       REPORTED BY SPOTTERS

0332 PM    8 N SUSSEX                WY   .88 INCH HAIL
06/02/02   JOHNSON                        REPORTED BY SPOTTERS

0325 PM    8 N SUSSEX                WY   1.50 INCH HAIL
06/02/02   JOHNSON                        REPORTED BY SPOTTERS

1255 PM    WORLAND                   WY   .75 INCH HAIL
06/02/02   WASHAKIE                       REPORTED BY SPOTTERS

0127 PM    TEN SLEEP                 WY   .75 INCH HAIL
06/02/02   WASHAKIE

RAE

Severe Thunderstorm Warnings in Wyoming, 2002Every severe thunderstorm warning in 2002

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.