A very weak landspout tornado developed just north of Grand Junction. Dust and rows of plastic mulch cover were lofted from a field.
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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 GRR wrote it up.
A very weak landspout tornado developed just north of Grand Junction. Dust and rows of plastic mulch cover were lofted from a field. No other damage was reported.
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 Grand Rapids, MI wrote its last area forecast discussion before the first event at Jun 30, 7:17 PM EST, 14 minutes earlier.
Area Forecast Discussion National Weather Service Grand Rapids MI 817 PM EDT Fri Jun 30 2017 LATEST UPDATE... Aviation .SYNOPSIS... Issued at 329 PM EDT Fri Jun 30 2017 Scattered showers and thunderstorms will over the region tonight southeast of a Holland to Houghton Lake line, but these will wind down by about 4 AM. On Saturday, to start the holiday weekend only expect isolated storms, with most areas staying dry. As a side note, if you plan to be out on Lake Michigan tonight through about mid day Saturday, expect areas of fog. Another period of scattered showers and storms will occur Sunday into early Sunday evening as a cold front comes through. We should be largely dry Monday through Wednesday, with showers and storms possible again Thursday and Friday. Temperatures will be mild through the holiday weekend and next week with highs mainly in the upper 70s to lower 80s each day. && .SHORT TERM...(This evening through Sunday night) Issued at 329 PM EDT Fri Jun 30 2017 Severe threat will remain through this evening, but then the storms will become more isolated and weaker after about 10 PM. We will have to watch a front that comes down Sunday into Sunday evening as we may need to increase POPs with time as the front looks healthier now. Storms continue to increase just to our south. Most of the CWA has CAPE values around 1k J/kg, but the I-94 area was climbing to around 1.5k J/kg. Still appears the main severe threat is over the SE CWA within these higher CAPE readings and where the right entrance region of the upper jet crosses. Storms will wind down toward midnight, but isolated showers and storms may persist overnight. Can not rule out isolated storms into Saturday too with the short wave coming through. But most of this activity should shift to Central Lower into the afternoon. Expect a mainly quiet Saturday night, although an isolate storm may persist over Central Lower. The front for Sunday appears quicker now, and has a decent short wave with it. Suspect we are under doing the pcpn chances given this trend and I hiked them up somewhat. Feel we may continue to increase the chances if the trend of a stronger front continues. .LONG TERM...(Monday through Friday) Issued at 329 PM EDT Fri Jun 30 2017 Expect slightly warmer than normal temperatures with little in the way of precipitation until late in the week. We have a significant change in the upper level wave pattern from this current week to next week. A storm currently over the Gulf of Alaska is forecast to move onshore by early next week. That will force the upper ridge currently over the western CONUS into the central and eastern CONUS for most of next week. This also means the polar jet, which has been near or south of Michigan over the past week will now be north of Michigan. Late in the week some of the energy from that storm currently in the Gulf of Alaska will try to move into the Great Lakes on the northern stream, so that may bring convection with it. The big glitch with this forecast is the front that moves south of Michigan early Monday does not get all that far south of us so it may be that any significant frontal waves that form on that front could get far enough north to bring thunderstorms into at least the southern sections, mostly near and south of I-96. So, the chance for thunderstorms will be low most of the week but it is NOT ZERO. The northern stream cold front late in the week has timing issues and the models do not agree well on how this plays out. Still it would seem the risk for storms will be greater late in the week than earlier in the week. Bottom line is partly cloudy with lows in the 60s and highs in the lower to mid 80s each day, best chance for thunderstorms is Friday. && .AVIATION...(For the 00Z TAFS through 00Z Saturday evening) Issued at 817 PM EDT Fri Jun 30 2017 Scattered showers and isolated thunderstorms will remain possible through the evening hours or through 04z. After 04z, the precipitation should wind down. There will be at least an isolated chance for a shower/storm though until the cold front moves east of the area overnight. Bottom line, expecting VFR weather into the overnight hours outside of the small possibility that a shower or storms affects one of the TAF sites. Overnight after 08z to 10z MVFR ceilings and visibilities will likely develop with the chance of IFR as well. At this point have introduced MVFR weather into the TAFs, but later forecast may need to add IFR. On Saturday, the lower ceilings/visibilities should lift during the mid morning hours. VFR weather is expected during the afternoon. There are small chances for showers/storms Saturday afternoon as well, but did not include in the TAFs just yet. && .MARINE... Issued at 329 PM EDT Fri Jun 30 2017 Winds and waves will remain on the low side through the holiday weekend. Boaters will need to be aware of fog across the lake tonight into Saturday morning with high dew points over chilly waters. With dew points lowering Saturday, expect the fog will become more patchy by mid day. Storms will be most possible this evening, then again Sunday and Sunday evening. && .HYDROLOGY... Issued at 1215 PM EDT Fri Jun 30 2017 Area river stages continued to fall across West Michigan overnight...with all locations below bankfull stage. The primary concern is the impact of the rainfall event this afternoon and tonight on the Pine and Chippewa river basins... which are the most sensitive to runoff due to the heavy rain about a week ago. The latest model output...and the trend over the past few days...keeps the heaviest rainfall and the greatest coverage of showers and thunderstorms to the south of those basins. Therefore...runoff from the rainfall this afternoon and tonight is not expected to produce above bankfull rises this weekend. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. LM...None. && SYNOPSIS...JK SHORT TERM...JK LONG TERM...WDM AVIATION...Duke HYDROLOGY...MWS MARINE...JK
HAZARDOUS WEATHER OUTLOOK National Weather Service Grand Rapids MI 1157 AM EDT Fri Jun 30 2017 MIZ037>040-043>046-050>052-056>059-064>067-071>074-010830- Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon- Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton- Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- 1157 AM EDT Fri Jun 30 2017 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...This afternoon and Tonight Scattered thunderstorms are expected. A few storms could become strong to severe mainly southeast of a South Haven to Alma line from mid afternoon through mid evening. Locally heavy rain is also possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Isolated thunderstorms are forecast Saturday and Sunday but severe weather is not expected. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening. LMZ844>849-010830- St Joseph to South Haven MI-South Haven to Holland MI- Holland to Grand Haven MI-Grand Haven to Whitehall MI- Whitehall to Pentwater MI-Pentwater to Manistee MI- 1157 AM EDT Fri Jun 30 2017 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...This afternoon and Tonight Scattered thunderstorms are expected. A few strong to severe storms are possible south of Grand Haven. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Isolated thunderstorms are forecast Saturday and Sunday but severe weather is not expected. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening. Meade JK
The Grand Rapids radar (KGRR), 68 km away, was scanning. The volume nearest the first event began at 00:32 UTC.
1 tornado. Local standard time, as filed.
An EF-0 landspout tornado developed from a weak thunderstorm. No signficant damage was reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2017Every state in 2017This day in weather historyThe tornado archive for Michigan, 2017Warnings in Michigan, June 2017
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: 705368.