Wyoming, 2002

Hail in Wyoming, August 28, 2002

August 28, 2002 · NWS CYS · 1 event in 1 county or zone

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

Open the live radar over this ground

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 Cheyenne, WY wrote its last area forecast discussion before the first event at Aug 28, 1:25 PM MST, 3 hours 49 minutes earlier.

Area forecast discussion, Aug 28, 1:25 PM MST, 3 hours 49 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
225 PM MDT WED AUG 28 2002

WV IMAGERY SHOWING S/WV TROF MVG ACRS NW CO/SOUTH CENTRAL WY...WITH
60KT H3 JET ENERGY EVIDENT VIA CIRRUS BANDS MVG INTO SW CO.  ANOTHER
NIGHT OF SHWRS/TSTMS ACRS THE FA...WITH MOST NUMEROUS ACTIVITY OVR
THE SE WY PLAINS INTO THE PANHANDLE.  H8-H7 THETA-E RIDGE AXIS
NOSING INTO SE WY THIS EVENING...WITH H3 DIVERGENCE FIELDS FOCUSING
BETWEEN CYS-SNY.  ABUNDANT LOW LVL MSTR OVR ERN AREAS...WITH SFC
DWPTS IN THE 50S TO LWR 60S AND PLENTY OF STRATO-CU.  LACK OF
DAYTIME HEATING DUE TO LOW CLDS OVR ERN AREAS MAY HELP TO INHIBIT
SOME OF THE CONVECTION IN THE NEAR TERM...BUT ENOUGH INSTABILITY AND
FORCING THIS EVENING TO PRODUCE SCT STRONG/SEVERE TSTMS.  I HAVE
SOME CONCERN ABOUT FLASH FLOODING POTENTIAL OVR ERN AREAS...WITH
PW/S OF 1.0 TO 1.3 INCHES AND THE PAST FEW NIGHTS OF LCLY HVY RAIN.
GIVEN THE MORE LOCAL NATURE OF THE FLASH FLOOD POTENTIAL TONIGHT...I
WL NOT ISSUE A FFA.

UPR LOW OVR SRN ID BEGINS TO GRADUALLY OPEN UP ON THU...AND DRIER
AIR BEGINS TO MOVE INTO SOUTH CENTRAL PARTS OF WY.  STILL PLENTY OF
LOW LVL MSTR/INSTABILITY/DEEP SHEAR AND UPR DIVERGENCE OVR ERN
AREAS...SO ANOTHER ROUND OF SHWRS/TSTMS THU-THU NITE.  H8-H7 THETA-E
AXIS SHIFTS A LITTLE FURTHER EAST ON THU...SO MAIN PCPN FOCUS MAY BE
MORE TOWARD THE PANHANDLE THAN OVR WY.  UPR/SFC PATTERN FINALLY
TURNS TOWARD DRIER WESTERLY FRI-SAT...AS UPR LOW OVR ID LIFTS OUT.
CURRENT FCST FOR HAS DRY BOTH PERIODS...AND THIS LOOKS
GOOD.

.EXTENDED...
WEAK COLD FRONT WILL WORK ITS WAY INTO THE FORECAST AREA EARLY
MONDAY...WITH ASSOCIATED WIND SHIFT.  THERE IS A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS ON SUNDAY AHEAD OF THE FRONT....WITH
DECREASING CHANCE OF RAIN BEHIND THE FRONT.  MONDAY LOOKS TO BE
MOSTLY DRY...WITH A CHANCE OF LATE DAY SHOWERS AND THUNDERSTORMS
RETURNING TO THE FORECAST TUESDAY AND WEDNESDAY AS A WEAK UPPER
TROUGH MOVES THROUGH.

.CYS...
WY...NONE.
NE...NONE.

JK/RGB

The radar

The Cheyenne radar (KCYS), 16 km away, was scanning. The volume nearest the first event began at 00:13 UTC.

Open the radar archive at this moment

Event by event

1 hail. Local standard time, as filed.

Hail, Laramie

When
August 28, 5:14 PM MST to 5:19 PM MST
Where
Laramie County, 12 mi N of Cheyenne
Measured
1.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.300, -104.817

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

More

Every storm in Wyoming in 2002Every state in 2002This day in weather historyWarnings in Wyoming, August 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: 5314678.