Pilot Index / Colorado / May 31, 2023

Preliminary

Storms in Colorado on May 31, 2023

17 published severe reports across Colorado on May 31, 2023.

Updated Oct 28, 2026.

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

Hail reports: 7. Wind reports: 10. Tornado reports: 0.

The table and map show 17 of 17 reports.

TimeWhatSize or SpeedWhereDetails
May 31, 2023, 3:10 PM MDTHail1.00 in1 WNW Northglenn
Record
  • May 31, 2023, 3:10 PM MDT. Hail, 1.00 in, 1 WNW Northglenn. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:63fee820e5ae08f572f3c00ebe03ba4ede64976056255c1f90080112cbb2711b.
May 31, 2023, 3:15 PM MDTHail1.50 in2 SW Barr Lake
Record
  • May 31, 2023, 3:15 PM MDT. Hail, 1.50 in, 2 SW Barr Lake. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:435c62a6f65585eded5b2cf843d28913e0cbd131f32ea154e0cbdd141f09be4b.
May 31, 2023, 3:29 PM MDTHail1.00 in1 NNE Northglenn
Record
  • May 31, 2023, 3:29 PM MDT. Hail, 1.00 in, 1 NNE Northglenn. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:9c235dd64961371e2b158d77bf1c89a6dee2863a3d4cf883034fbdca0b339089.
May 31, 2023, 3:44 PM MDTHail1.00 in1 W Firestone
Record
  • May 31, 2023, 3:44 PM MDT. Hail, 1.00 in, 1 W Firestone. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:65b7d8cfb740334e420aa32fbbd4868f9b274292c0751d932fc8e370d62f8ff2.
May 31, 2023, 3:48 PM MDTHail1.00 in1 ENE Frederick
Record
  • May 31, 2023, 3:48 PM MDT. Hail, 1.00 in, 1 ENE Frederick. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:f6176029f681555e8f1c846acb194ad1827eeef99d9263ef7e8b86ddd01a0858.
May 31, 2023, 3:55 PM MDTWind61 mph3 NW Fruitvale
Record
  • May 31, 2023, 3:55 PM MDT. Wind, 61 mph, 3 NW Fruitvale. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:55e3ee709d358a6b4814ef97bf280b02d71826c043ca789e3519acf77ecf1406.
May 31, 2023, 3:55 PM MDTWind61 mph(GJT)WALKER ARPT
Record
  • May 31, 2023, 3:55 PM MDT. Wind, 61 mph, (GJT)WALKER ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:1092215.
May 31, 2023, 3:55 PM MDTWind70 mphJOHNSTOWN
Record
  • May 31, 2023, 3:55 PM MDT. Wind, 70 mph, JOHNSTOWN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:1101377.
May 31, 2023, 3:58 PM MDTWind64 mph1 NW Milliken
Record
  • May 31, 2023, 3:58 PM MDT. Wind, 64 mph, 1 NW Milliken. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:11c4e6fe9958e6471a4b289011cad2469025a67baa2e24aef7dfdd9176db683c.
May 31, 2023, 3:58 PM MDTWind64 mphJOHNSTOWN
Record
  • May 31, 2023, 3:58 PM MDT. Wind, 64 mph, JOHNSTOWN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:1101374.
May 31, 2023, 4:15 PM MDTWind60 mphLA SALLE
Record
  • May 31, 2023, 4:15 PM MDT. Wind, 60 mph, LA SALLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:1101378.
May 31, 2023, 4:18 PM MDTWind70 mphWINDSOR
Record
  • May 31, 2023, 4:18 PM MDT. Wind, 70 mph, WINDSOR. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:1101376.
May 31, 2023, 4:27 PM MDTWind60 mph2 W Windsor
Record
  • May 31, 2023, 4:27 PM MDT. Wind, 60 mph, 2 W Windsor. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:9ce763857bd1b35d86a0c204671c7a21ba3fd97b327fe76126bf5f77f3de3c5b.
May 31, 2023, 5:16 PM MDTWind65 mph7 N Rockport
Record
  • May 31, 2023, 5:16 PM MDT. Wind, 65 mph, 7 N Rockport. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:00ae3620c25799ebe9e512a26320249508346d1ee67cb08ea96fa4c5c2acdad9.
May 31, 2023, 5:16 PM MDTWind64 mphROCKPORT
Record
  • May 31, 2023, 5:16 PM MDT. Wind, 64 mph, ROCKPORT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:1101375.
May 31, 2023, 6:23 PM MDTHail1.25 in3 WNW Brush
Record
  • May 31, 2023, 6:23 PM MDT. Hail, 1.25 in, 3 WNW Brush. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:aa8d53e23c02d2e7a7ef8599b54093df4d4297dbd4b3bfa22107e3510d27487e.
May 31, 2023, 6:37 PM MDTHail1.25 in4 NW Brush
Record
  • May 31, 2023, 6:37 PM MDT. Hail, 1.25 in, 4 NW Brush. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:cda47417abe79e7fa503ff16ba2a8d8230b7d1af0598c7a42e9e29d2fc3a9c2c.
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.