Hail, Weston
- When
- July 18, 8:45 PM MST
- Where
- Weston County, 16 mi NW of Clareton
- Measured
- 1.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.867, -104.933
Hail in Wyoming, July 18, 2002
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 Rapid City, SD wrote its last area forecast discussion before the first event at Jul 18, 6:40 PM MST, 2 hours 5 minutes earlier.
Area forecast discussion, Jul 18, 6:40 PM MST, 2 hours 5 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 740 PM MDT THU JUL 18 2002 MOST OF THE CWFA WAS NORTH OF A SURFACE BOUNDARY...WHICH WAS OVER SCNTRL SD AT 01Z. PLENTY OF MID- AND UPPER-LEVEL MOISTURE COVERED THE CWFA...WITH THE 00Z KUNR PW AT 140 PERCENT OF AVERAGE. SOME PERSISTENT STORMS WERE FIRING OVER FAR WESTERN PENNINGTON COUNTY...IN VICINITY OF A NORTH-SOUTH BOUNDARY AND DECENT THETA-E AIR. OTHERWISE...THE MAIN MCS WAS OVER CNTRL WY IN VICINITY OF A THETA-E RIDGE AHEAD OF A WEAK UPPER WAVE. THIS MCS WILL LIKELY PERSIST GIVEN THE WEAK ISENTROPIC LIFT...PLENTIFUL MOISTURE...AND STEEP MID-LEVEL LAPSE RATES. ETA CORFIDI VECTORS TAKE THIS MCS ACROSS THE CWFA OVERNIGHT. THEREFORE...THE CURRENT FORECAST OF 20-40 POPS LOOKS REASONABLE...WITH THE GREATEST CHANCE ACROSS THE NWRN CWFA. .UNR...NONE. MJB
In the hours before
Local storm report, Jul 18, 7:15 PM MST, 1 hour 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
815 PM MDT THU JUL 18 2002
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0615 PM 4 NW DEERFIELD SD 1.5 INCH HAIL
07/18/02 PENNINGTON REPORTED BY PUBLIC.
HAIL 2 INCHES DEEP.The radar
The national radar mosaic for the moment the first event began.
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
- Flash Flood in Oregon, July 18, 2002
- Flash Flood in Colorado, July 18, 2002
- Damaging Wind and Lightning Strike in Indiana, July 18, 2002
- Flash Flood in Pennsylvania, July 18, 2002
- Lightning Strike in Florida, July 18, 2002
- Damaging Winds and Lightning Strikes in Michigan, July 18, 2002
- Hail and Damaging Winds in Iowa, July 18, 2002
- Damaging Wind in Florida, July 18, 2002
- Tornado in Minnesota, July 18, 2002
- Hail and Damaging Winds in New York, July 18, 2002
- Damaging Winds in Iowa, July 18, 2002
- Lightning Strike in Florida, July 18, 2002
More
Every storm in Wyoming in 2002Every state in 2002This day in weather historyWarnings in Wyoming, July 2002
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: 5306403.