Storms in Montana on May 18, 2020

12 published severe reports across Montana on May 18, 2020.

Updated Oct 28, 2026.

Coverage is partial. 473 source scopes are pending. Pending data is not a zero report count.

Hail reports: 4. Wind reports: 8. Tornado reports: 0.

The table and map show 12 of 12 reports.

Time	What	Size or Speed	Where	Details
May 18, 2020, 7:00 PM MDT	Hail	1.00 in	5 WSW DANVERS	Record May 18, 2020, 7:00 PM MDT. Hail, 1.00 in, 5 WSW DANVERS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:c16d10c1d6894ea9a4e39641a96e8121712750c5f022a086b2aa5de167b73088.
May 18, 2020, 7:00 PM MDT	Hail	1.00 in	DANVERS	Record May 18, 2020, 7:00 PM MDT. Hail, 1.00 in, DANVERS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889267.
May 18, 2020, 7:05 PM MDT	Wind	73 mph	7 WNW HILGER	Record May 18, 2020, 7:05 PM MDT. Wind, 73 mph, 7 WNW HILGER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:58b564570a8fda52b58d9e473cabcbb8e261119f31bc548846c4cca2fbd4a367.
May 18, 2020, 7:59 PM MDT	Wind	69 mph	4 SSW POWER	Record May 18, 2020, 7:59 PM MDT. Wind, 69 mph, 4 SSW POWER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:1485cc33107963265ae2c1736110e857738809a8d99f008b3d9c5d3cba5909da.
May 18, 2020, 7:59 PM MDT	Wind	69 mph	POWER	Record May 18, 2020, 7:59 PM MDT. Wind, 69 mph, POWER. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889268.
May 18, 2020, 8:18 PM MDT	Wind	62 mph	POWER	Record May 18, 2020, 8:18 PM MDT. Wind, 62 mph, POWER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:f2a7ee8a7fa0826976e5aeed0515eed9ff384b3e0b711ee4a42efa8373eed017.
May 18, 2020, 8:18 PM MDT	Wind	62 mph	POWER	Record May 18, 2020, 8:18 PM MDT. Wind, 62 mph, POWER. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889270.
May 18, 2020, 11:35 PM MDT	Wind	60 mph	2 SSE GEYSER	Record May 18, 2020, 11:35 PM MDT. Wind, 60 mph, 2 SSE GEYSER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:6471353f65af68ca09df664c6f88de935116e3998a05d2804ac9789c50c7d9e3.
May 18, 2020, 11:35 PM MDT	Wind	61 mph	6 E GEYSER	Record May 18, 2020, 11:35 PM MDT. Wind, 61 mph, 6 E GEYSER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:8dc9cac580eca34930c36d5437acbddadbfae3aaadcc9b77abdb80f3fba7c229.
May 18, 2020, 11:35 PM MDT	Wind	60 mph	GEYSER	Record May 18, 2020, 11:35 PM MDT. Wind, 60 mph, GEYSER. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889273.
May 18, 2020, 11:55 PM MDT	Hail	1.25 in	MOCCASIN	Record May 18, 2020, 11:55 PM MDT. Hail, 1.25 in, MOCCASIN. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:3efde559ef30a6caba00412a4033fde5fdd90365f554eed7e8ab218c1c4dc53b.
May 18, 2020, 11:55 PM MDT	Hail	1.25 in	MOCCASIN	Record May 18, 2020, 11:55 PM MDT. Hail, 1.25 in, MOCCASIN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889285.

Hail, 1.00 in

May 18, 2020, 7:00 PM MDT

5 WSW DANVERS
Record
- May 18, 2020, 7:00 PM MDT. Hail, 1.00 in, 5 WSW DANVERS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:c16d10c1d6894ea9a4e39641a96e8121712750c5f022a086b2aa5de167b73088.
Hail, 1.00 in

May 18, 2020, 7:00 PM MDT

DANVERS
Record
- May 18, 2020, 7:00 PM MDT. Hail, 1.00 in, DANVERS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889267.
Wind, 73 mph

May 18, 2020, 7:05 PM MDT

7 WNW HILGER
Record
- May 18, 2020, 7:05 PM MDT. Wind, 73 mph, 7 WNW HILGER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:58b564570a8fda52b58d9e473cabcbb8e261119f31bc548846c4cca2fbd4a367.
Wind, 69 mph

May 18, 2020, 7:59 PM MDT

4 SSW POWER
Record
- May 18, 2020, 7:59 PM MDT. Wind, 69 mph, 4 SSW POWER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:1485cc33107963265ae2c1736110e857738809a8d99f008b3d9c5d3cba5909da.
Wind, 69 mph

May 18, 2020, 7:59 PM MDT

POWER
Record
- May 18, 2020, 7:59 PM MDT. Wind, 69 mph, POWER. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889268.
Wind, 62 mph

May 18, 2020, 8:18 PM MDT

POWER
Record
- May 18, 2020, 8:18 PM MDT. Wind, 62 mph, POWER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:f2a7ee8a7fa0826976e5aeed0515eed9ff384b3e0b711ee4a42efa8373eed017.
Wind, 62 mph

May 18, 2020, 8:18 PM MDT

POWER
Record
- May 18, 2020, 8:18 PM MDT. Wind, 62 mph, POWER. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889270.
Wind, 60 mph

May 18, 2020, 11:35 PM MDT

2 SSE GEYSER
Record
- May 18, 2020, 11:35 PM MDT. Wind, 60 mph, 2 SSE GEYSER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:6471353f65af68ca09df664c6f88de935116e3998a05d2804ac9789c50c7d9e3.
Wind, 61 mph

May 18, 2020, 11:35 PM MDT

6 E GEYSER
Record
- May 18, 2020, 11:35 PM MDT. Wind, 61 mph, 6 E GEYSER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:8dc9cac580eca34930c36d5437acbddadbfae3aaadcc9b77abdb80f3fba7c229.
Wind, 60 mph

May 18, 2020, 11:35 PM MDT

GEYSER
Record
- May 18, 2020, 11:35 PM MDT. Wind, 60 mph, GEYSER. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889273.
Hail, 1.25 in

May 18, 2020, 11:55 PM MDT

MOCCASIN
Record
- May 18, 2020, 11:55 PM MDT. Hail, 1.25 in, MOCCASIN. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:3efde559ef30a6caba00412a4033fde5fdd90365f554eed7e8ab218c1c4dc53b.
Hail, 1.25 in

May 18, 2020, 11:55 PM MDT

MOCCASIN
Record
- May 18, 2020, 11:55 PM MDT. Hail, 1.25 in, MOCCASIN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889285.

How We Count

This page uses published ground reports from 2016-01-01 through 2026-10-29. Coverage is partial. 473 source scopes are pending. Pending data is not a zero report count.

Hail counts at 1.00 in or larger. Wind counts at 58 mph or stronger. State days also include tornado reports.

Reports use the local civil date and clock. City pages use the city clock. State pages use each report location clock.

Exact repeated observations are counted once. Nearby reports with different times, coordinates or sizes remain separate observations.

NCEI rows are verified against NCEI Storm Events. SPC and NWS local reports are preliminary.

Radar signatures and warning polygons are not ground reports and are not in these counts.

A missing report does not show that no storm occurred. These pages show city or state exposure, not damage at an address.

This free page covers the state. It does not check a street address.

Limits

This page is not a certified record.

This page shows weather exposure, not damage or cause.

This page is not an expert opinion and it is not a meteorologist review.

Verify these rows with official NOAA and NWS records.

VectorWX is not affiliated with or endorsed by NOAA or NWS.

Radar-estimated hail size comes from MRMS MESH or NCEI nx3hail. It is an estimate of hail aloft. It is not a measurement of hail on a roof.