Thunderstorm Wind, Idaho
- When
- April 23, 4:00 PM PST to 4:15 PM PST
- Where
- Idaho County, 10 mi SE of Grangeville
- Measured
- 54 kt (62 mph) estimated gust
- Reported by
- TRAINED SPOTTER
- Coordinates
- 45.833, -115.967
Damaging Wind in Idaho, April 23, 2005
Strong thunderstorm produced damaging winds and heavy rain. A 10 mile stretch of Highway 14 between Grangeville and Elk City had downed trees and power lines with branches and large rocks on the road between mile markers 17 and 29.
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 happened
The episode as NWS MSO wrote it up.
Strong thunderstorm produced damaging winds and heavy rain. A 10 mile stretch of Highway 14 between Grangeville and Elk City had downed trees and power lines with branches and large rocks on the road between mile markers 17 and 29.
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 Missoula, MT wrote its last area forecast discussion before the first event at Apr 23, 12:07 PM PST, 3 hours 53 minutes earlier.
Area forecast discussion, Apr 23, 12:07 PM PST, 3 hours 53 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 207 PM MDT SAT APR 23 2005 .SHORT TERM...TONIGHT THROUGH MONDAY...MODELS ARE CAPTURING OVERALL WEATHER PATTERN AND MAINTAINING RUN-TO-RUN CONSISTENCY THROUGH THE PERIOD. HOWEVER...ALL MODELS ARE MISSING AN UPPER LEVEL CLOSED LOW CIRCULATION CURRENTLY SPINNING OVER NORTHEAST OREGON AND INSTEAD HAVE ONLY A WEAK UPPER LEVEL DISTURBANCE MOVING NORTHWARD OVER EASTERN OREGON. THEREFORE...BELIEVE CONVECTIVE POTENTIAL FOR WEST CENTRAL IDAHO IS UNDERDONE BY MODELS FOR THIS EVENING...AND HAVE ADJUSTED TREND UPWARD. OF PARTICULAR INTEREST...THERE IS AN AREA OF LOW-LEVEL CONVERGENCE OVER NORTHEAST OREGON THAT WILL MOVE INTO WEST CENTRAL IDAHO THIS EVENING. LIGHTNING ACTIVITY HAS ALREADY INCREASED IN OREGON AND SOUTHERN IDAHO BY EARLY THIS AFTERNOON. MEANWHILE...THE ATMOSPHERE IS CURRENTLY MORE UNSTABLE THAN IVE SEEN SINCE LAST SUMMER. HENCE...EVENING SHIFT WILL NEED TO MONITOR THESE THUNDERSTORMS AS THEY MOVE NORTHWARD THIS EVENING. IN PARTICULAR... THESE STORMS HAVE A POTENTIAL TO PRODUCE SMALL HAIL AND THERE IS AN OUTSIDE CHANCE OF A FEW REACHING SEVERE POTENTIAL...WHICH IS HAIL LARGER THAN 3/4 INCH. HOWEVER...I DID NOT FEEL STRONG ENOUGH TO PUT THAT IN FORECAST OR POTENTIALLY COORDINATE A SEVERE THUNDERSTORM WATCH. TROUGH WILL BEGIN TO RETROGRADE WEST ON SUNDAY...THUS SHOWER AND THUNDERSTORM THREAT WILL BE MOVING WESTWARD. IN ADDITION...SURFACE PRESSURE GRADIENT WILL BUILD SUNDAY AFTERNOON PRODUCING BREEZY EASTERLY WINDS IN THE AFTERNOON. FINALLY...DEFORMATION ZONE BETWEEN TROUGH TO THE EAST AND WEST OF THE AREA WILL SET UP OVER SOUTHERN IDAHO ON MONDAY AND PRODUCE SLIGHT CHANCE OF SHOWERS THAT DAY. .LONG TERM...MONDAY NIGHT THROUGH SATURDAY...LITTLE CHANGES MADE TO GOING FORECAST. STILL LOOKS DRY OVER FORECAST AREA MONDAY NIGHT WITH SOME POSSIBLE UPSLOPE CONDITIONS ALONG THE DIVIDE ON TUESDAY. THINGS MOISTEN AS THE UPPER RIDGE LITERALLY GETS SQUEEZED OUT BETWEEN THE LOW OFF THE CALIFORNIA COAST AND A TROUGH SLIDING SOUTH OUT OF CENTRAL CANADA. BACK DOOR COLD FRONT STILL BEING ADVERTISED FOR MID WEEK BUT EXACT TIMING IS UNCERTAIN. HAVE CONTINUED THE COOLER TEMPERATURES WEDNESDAY AND THURSDAY...WITH A GRADUAL WARMING TREND FRIDAY AND SATURDAY. THINGS LOOK UNSETTLED FROM WEDNESDAY THROUGH SATURDAY AS MOISTURE AND UPPER LEVEL FEATURES MOVE OVER THE FORECAST AREA FROM THE TWO AFOREMENTIONED LOWS. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...NONE. ID...NONE. && SHORT TERM...MWJ LONG TERM...MEAD weather.gov/missoula
The radar
The Missoula radar (KMSX), 203 km away, was scanning. The volume nearest the first event began at 00:01 UTC.
Event by event
1 thunderstorm wind. Local standard time, as filed.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Winter Storm in Ohio, April 23 to 25, 2005
- Tornado in Florida, April 23, 2005
- Tornado in Florida, April 23, 2005
- Lightning Strike in Pennsylvania, April 23, 2005
- Hail and Damaging Wind in Arizona, April 23, 2005
- Hail and Damaging Winds in Virginia, April 23, 2005
- Winter Storm in Michigan, April 23 to 24, 2005
- Winter Weather in North Carolina, April 23 to 24, 2005
- Heavy Snow and Heavy Rain in Utah, April 23 to 25, 2005
- Marine Thunderstorm Winds in North Atlantic Coastal Waters, April 23, 2005
- Hail and Damaging Wind in North Carolina, April 23, 2005
- Hail and Damaging Winds in Maryland, April 23, 2005
More
Every storm in Idaho in 2005Every state in 2005This day in weather historyWarnings in Idaho, April 2005
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: 5442617.