Hail, Johnson
- When
- July 7, 6:45 PM MST
- Where
- Johnson County, 27 mi E of Buffalo
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 44.350, -106.150
Hail in Wyoming, July 7, 2003
1 hail, as filed by the National Weather Service.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Riverton, WY wrote its last area forecast discussion before the first event at Jul 7, 2:00 PM MST, 4 hours 45 minutes earlier.
Area forecast discussion, Jul 7, 2:00 PM MST, 4 hours 45 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 300 PM MDT MON JUL 7 2003 ...TODAY THROUGH THURSDAY NIGHT... WV IMAGERY SHOWING UPPER LEVEL CIRCULATION OVER SOUTHWEST WY...MOVING EAST. ISOLD TSTMS ARE DEVELOPING IN MOISTURE PLUME...AHEAD OF SHORT WAVE OVER SOUTHERN WY. DEVELOPMENT OF CONVECTION MAY OCCUR FURTHER NORTH ACROSS MAINLY NATRONA AND FREMONT COUNTIES AS SFC DEWPOINTS IN THE UPPER 40S TO LOWER 50S AND CAPES IN THE 1000 TO 1800 J/KG RANGE. ISOLD POPS ACROSS THE SOUTHWEST...CENTRAL AND EAST CWFA FOR MAINLY THIS EVENING LOOKS GOOD. LOOKS MAINLY DRY FOR TUESDAY THROUGH THURSDAY AS UPPER RIDGE BUILDS NORTH FROM THE SOUTHWEST US. HIGH TEMPS IN THE LOW TO MID 90S...MAINLY ACROSS THE WIND RIVER AND BIG HORN BASINS. ALSO...SFC AND 700 MB GRADIENT TIGHTENS ON TUESDAY AHEAD OF A COOL FRONT AND RH VALUES WILL BE BELOW 15 PERCENT ACROSS MUCH OF THE AREA. WILL ISSUE A FIRE WEATHER WATCH MAINLY SOUTHWEST OF A CPR-RIW-BPI LINE FOR TUESDAY AFTERNOON AND EVENING. MC ...FRIDAY THROUGH MONDAY... LITTLE DIFFERENT MODEL SCENARIO TONIGHT IN THE LONG TERM. GFS/UKMET AND 12Z EC MODEL PUSHING THE UPPER HIGH LITTLE MORE OVER SW U.S. AND THUS SHUNTING ANY SHORTWAVES/MOISTURE FEED FARTHER WEST. THIS KEEPS OUR AREA IN NW FLOW THROUGH SAT. THEN THE GFS SWINGS A TROF INTO THE PAC NW WHICH BRINGS RIDGE AXIS OVER WY SUNDAY. THIS WOULD MAKE SUNDAY THE WARMEST DAY. NEXT PORTION OF THIS TROF ATTEMPTS TO BRING A COLD FRONT TO NW WY BY 00Z TUE. HAVE DECIDED TO TAKE OUT POPS FOR FRI/SAT IN THE S ZONES AND IN THE N ZONES SAT PM/EVE. WILL LEAVE SUNDAY DRY AND WILL PUT LOW POPS IN NW ZONES FOR MON PM. RIW...FIRE WEATHER WATCH TUESDAY AFTERNOON AND EVENING FOR CENTRAL AND SOUTH.
Hazardous weather outlook, Jul 7, 10:04 AM MST, 8 hours 41 minutes before
WYZ001>020-022>030-081300- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE RIVERTON WY 1104 AM MDT MON JUL 7 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT LOW LEVEL MOISTURE HAS INCREASED ACROSS THE AREA THIS MORNING...WITH SURFACE DEWPOINTS IN THE UPPER 40S TO LOWER 50S ACROSS NATRONA AND FREMONT COUNTIES. SURFACE HEATING WILL RESULT IN A UNSTABLE AIRMASS ACROSS MUCH OF THE AREA THIS AFTERNOON AND EVENING. AS AN UPPER LEVEL DISTURBANCE OVER NORTHERN UTAH MOVES ACROSS SOUTHERN WYOMING THIS AFTERNOON...ISOLATED THUNDERSTORMS WILL DEVELOP ACROSS MUCH OF THE AREA. THE STORMS WILL BE MOST NUMEROUS ACROSS NATRONA... FREMONT AND EASTERN SWEETWATER COUNTIES. A FEW STORMS MAY PRODUCE WIND GUSTS TO 50 MPH...SMALL HAIL AND HEAVY RAIN. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A DRY SOUTHWEST FLOW WILL DEVELOP ONCE AGAIN OVER SOUTHWEST WYOMING TUESDAY AFTERNOON AHEAD OF A PACIFIC COLD FRONT. CONDITIONS WILL BORDER ON RED FLAG CONDITIONS AS RELATIVE HUMIDITIES MAY DROP BELOW 15 PERCENT...WINDS WILL INCREASE OUT OF THE WEST AT 20 TO 30 MPH AND HAINES INDICES WILL RANGE FROM 5 TO 6. A FIRE WEATHER WATCH MAY HAVE TO BE ISSUED LATER TODAY FOR TUESDAY AFTERNOON AND EARLY EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. MC
In the hours before
Local storm report, Jul 7, 5:50 PM MST, 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RIVERTON, WY
650 PM MDT MON JUL 7 2003
TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0638 PM 28 E BUFFALO WY 1.75 INCH HAIL
07/07/03 JOHNSON REPORTED BY
PUBLIC...MOTORIST ALONG
INTERSTATE 90...CALLED IN
TO COUNTY EMERGENCY
MANAGER.
BEMThe radar
The Riverton/Lander radar (KRIW), 235 km away, was scanning. The volume nearest the first event began at 01:42 UTC.
Event by event
1 hail. Local standard time, as filed.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Heat in Oklahoma, July 7, 2003
- Tornado and Flash Flood in Ohio, July 7 to 8, 2003
- Hail in Iowa, July 7, 2003
- Flash Flooding and Flooding in Ohio, July 7, 2003
- Hail and Damaging Winds in Illinois, July 7, 2003
- Flash Flooding and Hail in Indiana, July 7 to 8, 2003
- Hail and Damaging Winds in Iowa, July 7, 2003
- Flood in Ohio, July 7 to 13, 2003
- Damaging Winds in Nebraska, July 7, 2003
- Lightning Strike in Minnesota, July 7, 2003
- Hail and Damaging Wind in Iowa, July 7, 2003
- Hail and Damaging Wind in Illinois, July 7, 2003
More
Every storm in Wyoming in 2003Every state in 2003This day in weather historyWarnings in Wyoming, July 2003
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5379609.