Pilot Index / Iowa / Aug 27, 2021

Preliminary

Storms in Iowa on Aug 27, 2021

18 published severe reports across Iowa on Aug 27, 2021.

Updated Oct 28, 2026.

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

Hail reports: 3. Wind reports: 4. Tornado reports: 11.

The table and map show 18 of 18 reports.

TimeWhatSize or SpeedWhereDetails
Aug 27, 2021, 12:30 AM CDTHail1.75 inINWOOD
Record
  • Aug 27, 2021, 12:30 AM CDT. Hail, 1.75 in, INWOOD. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:982513.
Aug 27, 2021, 1:05 AM CDTHail1.00 inROCK VLY
Record
  • Aug 27, 2021, 1:05 AM CDT. Hail, 1.00 in, ROCK VLY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:982514.
Aug 27, 2021, 1:16 AM CDTWind59 mphLE MARS
Record
  • Aug 27, 2021, 1:16 AM CDT. Wind, 59 mph, LE MARS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:982515.
Aug 27, 2021, 1:36 AM CDTWind64 mph1 E LE MARS
Record
  • Aug 27, 2021, 1:36 AM CDT. Wind, 64 mph, 1 E LE MARS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:b118351574d710a0d972229ec292ace535339990f1a04ef5b81124a8bb162745.
Aug 27, 2021, 1:46 AM CDTWind60 mphMARCUS
Record
  • Aug 27, 2021, 1:46 AM CDT. Wind, 60 mph, MARCUS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:982516.
Aug 27, 2021, 2:05 AM CDTWind60 mphCHEROKEE
Record
  • Aug 27, 2021, 2:05 AM CDT. Wind, 60 mph, CHEROKEE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:982517.
Aug 27, 2021, 4:00 AM CDTHail1.00 inSEXTON
Record
  • Aug 27, 2021, 4:00 AM CDT. Hail, 1.00 in, SEXTON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:978858.
Aug 27, 2021, 5:06 PM CDTTornadoCLEAR LAKE
Record
  • Aug 27, 2021, 5:06 PM CDT. Tornado, CLEAR LAKE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:972770.
Aug 27, 2021, 5:07 PM CDTTornado5 S CLEAR LAKE
Record
  • Aug 27, 2021, 5:07 PM CDT. Tornado, 5 S CLEAR LAKE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:f8a07c8d8651c3f414717ab33ca5851f02cdb6f9d18915360ed5abdbb75202b1.
Aug 27, 2021, 5:15 PM CDTTornado5 SSE CLEAR LAKE
Record
  • Aug 27, 2021, 5:15 PM CDT. Tornado, 5 SSE CLEAR LAKE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:3fbc56bbf1f82b8a0a7490477c8123c5fc31a8c8fdcf72fbaebfc393be5652d7.
Aug 27, 2021, 5:35 PM CDTTornadoDOUGHERTY
Record
  • Aug 27, 2021, 5:35 PM CDT. Tornado, DOUGHERTY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:972772.
Aug 27, 2021, 5:50 PM CDTTornadoKNOOP ARPT
Record
  • Aug 27, 2021, 5:50 PM CDT. Tornado, KNOOP ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:984551.
Aug 27, 2021, 5:51 PM CDTTornadoKNOOP ARPT
Record
  • Aug 27, 2021, 5:51 PM CDT. Tornado, KNOOP ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:981117.
Aug 27, 2021, 5:56 PM CDTTornado2 W MARBLE ROCK
Record
  • Aug 27, 2021, 5:56 PM CDT. Tornado, 2 W MARBLE ROCK. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:ceae43fe27cc92775b0ca34cb29c5af1a2b31744eec63beece1f3d94be3bff99.
Aug 27, 2021, 5:57 PM CDTTornadoAUREOLA
Record
  • Aug 27, 2021, 5:57 PM CDT. Tornado, AUREOLA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:981122.
Aug 27, 2021, 6:00 PM CDTTornado1 S MARBLE ROCK
Record
  • Aug 27, 2021, 6:00 PM CDT. Tornado, 1 S MARBLE ROCK. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:b54f4379fcbb55580e2b6152bd7e8754b7702ac59db90c7afc3cc4c86ce9f130.
Aug 27, 2021, 6:09 PM CDTTornado4 SW CHARLES CITY
Record
  • Aug 27, 2021, 6:09 PM CDT. Tornado, 4 SW CHARLES CITY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:4998d01384369b1d0ebf4e7b27c5c56dd7753e53e39e5ed3e34994d71007083a.
Aug 27, 2021, 6:10 PM CDTTornado2 SE MARBLE ROCK
Record
  • Aug 27, 2021, 6:10 PM CDT. Tornado, 2 SE MARBLE ROCK. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:bd4548bb2ee72b469f2cdf13c355464777382500bff5c05e33d523954c7a62d7.
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.