A long lived thunderstorm produced hail over a greater part of Grangeville and heavy rain over downtown. Many hail reports were received ranging from half an inch, and up to one inch south of town.
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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.
The episode as NWS MSO wrote it up.
A long lived thunderstorm produced hail over a greater part of Grangeville and heavy rain over downtown. Many hail reports were received ranging from half an inch, and up to one inch south of town. Minor flooding also occurred on Main street.
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 Jul 19, 12:18 PM PST, 7 hours 32 minutes earlier.
Area Forecast Discussion National Weather Service Missoula MT 218 PM MDT Tue Jul 19 2016 .DISCUSSION...A weather disturbance will shift across north central Idaho and northwest Montana this evening supporting isolated showers and thunderstorms. One or two of these storms may become strong from roughly the Orofino area northeastward to Troy area. However, again...we emphasize that any storm development should be isolated. Breezy conditions can be expected across west central/southwest Montana and Lemhi County this evening. Another disturbance should shift across the eastern Clearwaters and west central Montana late tonight and early Wednesday. This may support a few light showers or possible an isolated thunderstorm. A southwest flow, with relatively dry conditions and near normal temperatures is expected Wednesday afternoon. However, there should be enough instability for a few afternoon cumulus buildups over north central Idaho and western Montana. A HOTTER day is expected Thursday. High pressure is expected to temporarily build over the northern Rockies. Temperatures should warm to 5 to 10 degrees above normal and be the warmest day in July so far. A trough of low pressure is expected to brush north central Idaho and western Montana late Thursday night and Friday. The net result should be breezy conditions almost everywhere and a few showers from the Camas Prairie/Orofino areas eastward across mainly northwest Montana. A drier westerly flow with near normal temperatures is expected Saturday into early next week. && .AVIATION...Breezy conditions should prevail this evening across western Montana. Isolated showers and thunderstorms are expected this evening from the Orofino area northeastward to Libby, Troy and Eureka. Another weather disturbance may produce isolated showers over mainly west central Montana early Wednesday. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...&&
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 736 PM PDT TUE JUL 19 2016 IDZ005>007-200315- SOUTHERN CLEARWATER MOUNTAINS ID-OROFINO/GRANGEVILLE REGION ID- NORTHERN CLEARWATER MOUNTAINS ID- 736 PM PDT TUE JUL 19 2016 ...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL IDAHO AND CENTRAL CLEARWATER COUNTIES UNTIL 815 PM PDT... AT 734 PM PDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR WEIPPE...OR 13 MILES EAST OF OROFINO...MOVING NORTHEAST AT 45 MPH. HALF INCH HAIL...HEAVY RAIN AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... PIERCE...WEIPPE...HEADQUARTERS...CARDIFF AND JAYPE. LAT...LON 4632 11599 4647 11613 4677 11555 4654 11535 TIME...MOT...LOC 0234Z 238DEG 39KT 4644 11597
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
854 PM MDT TUE JUL 19 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0853 PM HAIL 4 SSE CRESTON 48.14N 114.10W
07/19/2016 M0.75 INCH FLATHEAD MT TRAINED SPOTTER
HALF INCH, WITH A FEW PENNY SIZED MIXED IN.
&&
NWS MISSOULA MT
IRIS SYSTEMSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
858 PM MDT TUE JUL 19 2016
MTZ002-003-200345-
FLATHEAD/MISSION VALLEYS MT-WEST GLACIER REGION MT-
858 PM MDT TUE JUL 19 2016
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL FLATHEAD COUNTY UNTIL 945
PM MDT...
AT 858 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12
MILES SOUTHEAST OF COLUMBIA FALLS...OR 15 MILES EAST OF EVERGREEN...
MOVING NORTHEAST AT 55 MPH.
DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.
LOCATIONS IMPACTED INCLUDE...
PINNACLE...NYACK AND ESSEX.
LAT...LON 4859 11366 4860 11363 4858 11361 4859 11354
4855 11350 4855 11347 4847 11347 4846 11348
4842 11341 4842 11335 4838 11333 4835 11338
4833 11338 4815 11397 4830 11412 4861 11373
TIME...MOT...LOC 0258Z 235DEG 49KT 4827 11395PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
902 PM MDT TUE JUL 19 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0901 PM HAIL GRANGEVILLE 45.92N 116.12W
07/19/2016 E0.75 INCH IDAHO ID TRAINED SPOTTER
.
&&
NWS MISSOULA MT
IRIS SYSTEMSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 813 PM PDT TUE JUL 19 2016 IDZ006-007-200400- SOUTHERN CLEARWATER MOUNTAINS ID-OROFINO/GRANGEVILLE REGION ID- 813 PM PDT TUE JUL 19 2016 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL IDAHO COUNTY UNTIL 900 PM PDT... AT 812 PM PDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9 MILES EAST OF GRANGEVILLE...MOVING NORTHEAST AT 45 MPH. DIME SIZE HAIL...HEAVY RAIN AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... LOWELL...CLEARWATER...STITES...SYRINGA AND HARPSTER. LAT...LON 4585 11600 4603 11614 4631 11556 4598 11523 TIME...MOT...LOC 0312Z 244DEG 39KT 4598 11594
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
942 PM MDT TUE JUL 19 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0750 PM HAIL GRANGEVILLE 45.92N 116.13W
07/19/2016 E1.00 INCH IDAHO ID PUBLIC
.
&&
NWS MISSOULA MT
IRIS SYSTEMThe Missoula radar (KMSX), 205 km away, was scanning. The volume nearest the first event began at 03:50 UTC.
2 hail. Local standard time, as filed.
Idaho county sheriff reported quarter size hail, some trees down, and minor flooding on main street.
One inch hail was reported by a member of the public.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2016Every state in 2016This day in weather historyWarnings in Idaho, July 2016
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: 646330, 646331.