Storms in Colorado on May 28, 2023

10 published severe reports across Colorado on May 28, 2023.

Updated Oct 28, 2026.

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

Hail reports: 10. Wind reports: 0. Tornado reports: 0.

The table and map show 10 of 10 reports.

Time	What	Size or Speed	Where	Details
May 28, 2023, 3:18 PM MDT	Hail	1.00 in	3 S NIWOT	Record May 28, 2023, 3:18 PM MDT. Hail, 1.00 in, 3 S NIWOT. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:1927122632f36ed6ae06dc0e87469e2851e4eb415e2a929974098a284dd0e450.
May 28, 2023, 3:18 PM MDT	Hail	1.00 in	3 SSW NIWOT	Record May 28, 2023, 3:18 PM MDT. Hail, 1.00 in, 3 SSW NIWOT. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:72d99daa521c8224ef88809a22fb8c9b4c122ae69c3f83f9dc4c58b5d7faf741.
May 28, 2023, 3:33 PM MDT	Hail	1.00 in	2 WSW WINDSOR	Record May 28, 2023, 3:33 PM MDT. Hail, 1.00 in, 2 WSW WINDSOR. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:b1c9941cdb6c1b2c0867d1848fe50167fb9dc6e28ff86380022a499d3d7d60bb.
May 28, 2023, 4:04 PM MDT	Hail	1.25 in	1 WNW GREELEY	Record May 28, 2023, 4:04 PM MDT. Hail, 1.25 in, 1 WNW GREELEY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:7ba993a6aba0aaf819bf6014d736ad8ab19ba0d78d3a668aeb78692803ea6d1a.
May 28, 2023, 4:10 PM MDT	Hail	1.25 in	GREELEY	Record May 28, 2023, 4:10 PM MDT. Hail, 1.25 in, GREELEY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:1a74dbeb2aa85fbcaacca4c4219ca11a43f82faa1ad4913797932a89d1cf4b25.
May 28, 2023, 4:18 PM MDT	Hail	1.50 in	1 WNW GREELEY	Record May 28, 2023, 4:18 PM MDT. Hail, 1.50 in, 1 WNW GREELEY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:3e746f1e58afed22369ae79fb808cfa561e9d1a059487f7a3f01101a912c71d0.
May 28, 2023, 4:23 PM MDT	Hail	1.25 in	2 NNW GARDEN CITY	Record May 28, 2023, 4:23 PM MDT. Hail, 1.25 in, 2 NNW GARDEN CITY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:4352e890af722789a7f92d8a7292261dee83262630cdca6187bd83ec181a51fc.
May 28, 2023, 5:15 PM MDT	Hail	1.00 in	1 N STONEHAM	Record May 28, 2023, 5:15 PM MDT. Hail, 1.00 in, 1 N STONEHAM. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:674c126582096b51418d31083cf8191ebb22dc55d903753605ed51b3e6183f2c.
May 28, 2023, 6:05 PM MDT	Hail	1.00 in	2 SW MERINO	Record May 28, 2023, 6:05 PM MDT. Hail, 1.00 in, 2 SW MERINO. Source: SPC Preliminary Reports. Status: Preliminary. Record id: spc:bda62a719f514744f3e07f6b00c0c444a4d947bb80272bdc7da78ab6f200b0ba.
May 28, 2023, 6:18 PM MDT	Hail	1.75 in	1 NW PREWITT RESERVOIR	Record May 28, 2023, 6:18 PM MDT. Hail, 1.75 in, 1 NW PREWITT RESERVOIR. Source: SPC Preliminary Reports. Status: Preliminary. Record id: spc:0bd35690b20433b0d095dcf27d1509aa5d2c5d083dd43a26a8e886729cb0d27b.

Hail, 1.00 in

May 28, 2023, 3:18 PM MDT

3 S NIWOT
Record
- May 28, 2023, 3:18 PM MDT. Hail, 1.00 in, 3 S NIWOT. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:1927122632f36ed6ae06dc0e87469e2851e4eb415e2a929974098a284dd0e450.
Hail, 1.00 in

May 28, 2023, 3:18 PM MDT

3 SSW NIWOT
Record
- May 28, 2023, 3:18 PM MDT. Hail, 1.00 in, 3 SSW NIWOT. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:72d99daa521c8224ef88809a22fb8c9b4c122ae69c3f83f9dc4c58b5d7faf741.
Hail, 1.00 in

May 28, 2023, 3:33 PM MDT

2 WSW WINDSOR
Record
- May 28, 2023, 3:33 PM MDT. Hail, 1.00 in, 2 WSW WINDSOR. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:b1c9941cdb6c1b2c0867d1848fe50167fb9dc6e28ff86380022a499d3d7d60bb.
Hail, 1.25 in

May 28, 2023, 4:04 PM MDT

1 WNW GREELEY
Record
- May 28, 2023, 4:04 PM MDT. Hail, 1.25 in, 1 WNW GREELEY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:7ba993a6aba0aaf819bf6014d736ad8ab19ba0d78d3a668aeb78692803ea6d1a.
Hail, 1.25 in

May 28, 2023, 4:10 PM MDT

GREELEY
Record
- May 28, 2023, 4:10 PM MDT. Hail, 1.25 in, GREELEY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:1a74dbeb2aa85fbcaacca4c4219ca11a43f82faa1ad4913797932a89d1cf4b25.
Hail, 1.50 in

May 28, 2023, 4:18 PM MDT

1 WNW GREELEY
Record
- May 28, 2023, 4:18 PM MDT. Hail, 1.50 in, 1 WNW GREELEY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:3e746f1e58afed22369ae79fb808cfa561e9d1a059487f7a3f01101a912c71d0.
Hail, 1.25 in

May 28, 2023, 4:23 PM MDT

2 NNW GARDEN CITY
Record
- May 28, 2023, 4:23 PM MDT. Hail, 1.25 in, 2 NNW GARDEN CITY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:4352e890af722789a7f92d8a7292261dee83262630cdca6187bd83ec181a51fc.
Hail, 1.00 in

May 28, 2023, 5:15 PM MDT

1 N STONEHAM
Record
- May 28, 2023, 5:15 PM MDT. Hail, 1.00 in, 1 N STONEHAM. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:674c126582096b51418d31083cf8191ebb22dc55d903753605ed51b3e6183f2c.
Hail, 1.00 in

May 28, 2023, 6:05 PM MDT

2 SW MERINO
Record
- May 28, 2023, 6:05 PM MDT. Hail, 1.00 in, 2 SW MERINO. Source: SPC Preliminary Reports. Status: Preliminary. Record id: spc:bda62a719f514744f3e07f6b00c0c444a4d947bb80272bdc7da78ab6f200b0ba.
Hail, 1.75 in

May 28, 2023, 6:18 PM MDT

1 NW PREWITT RESERVOIR
Record
- May 28, 2023, 6:18 PM MDT. Hail, 1.75 in, 1 NW PREWITT RESERVOIR. Source: SPC Preliminary Reports. Status: Preliminary. Record id: spc:0bd35690b20433b0d095dcf27d1509aa5d2c5d083dd43a26a8e886729cb0d27b.

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.