THUNDERBOARD
Historical Weather Report Builder
Webster County Emergency Management
Version 6.0.202 · Default WFO DMX · Pulls IEM archive data into one EOC Weather Historical Report.
Use this to generate a PDF from archived IEM sources for a specific local date/time window. It combines text products, VTEC warning metadata, Local Storm Reports, and timestamped IEM Time Machine/NEXRAD archive links into one report.
Current Event Log

Major Iowa Weather Event Presets

Presets load historically significant Iowa event windows. Adjust county, WFO, scope, and time range above to build a county-specific report.
August 10, 2020
The Midwest Derecho

Costliest thunderstorm event in U.S. history; the 12 PM to 2 PM window centers the demo around 1 PM CDT when radar coverage is useful for Linn County.

Strong digital IEM archive support: radar, warnings, text products, and storm reports.
May 25, 2008
Parkersburg-New Hartford EF5 Tornado

Violent northeast Iowa tornado event centered on the Parkersburg and New Hartford area. The window begins before warning issuance and carries through the main damage period.

Good severe-weather archive candidate: warnings, storm reports, radar context, and downstream text products.
June 13, 2008
2008 Iowa Flood - Cedar Rapids / Cedar River

Historic Iowa flood event with Cedar River impacts in the Cedar Rapids/Linn County area. This all-day preset is intended for flood-related products and timeline review.

Flood events may return fewer radar-centered products but are useful for flood statements, hydrologic messaging, and situational documentation.
June 27, 2011
2011 Missouri River Flooding - Western Iowa

Western Iowa Missouri River flooding preset focused on late-June 2011 impacts around the Council Bluffs, Harrison County, Mills County, and Hamburg corridor.

Hydrologic and civil-impact products may be more useful than radar imagery for this preset.
February 24, 2007
Eastern Iowa Ice Storm

Major eastern Iowa ice storm and winter storm event. This all-day preset is intended for winter weather statements, warnings, and storm reports.

Winter/ice events may emphasize text products, public information statements, and storm reports more than radar snapshots.
May 21, 2024
Greenfield / Adair County Tornado

County-specific severe weather starter preset for the Greenfield/Adair County tornado event and surrounding May 21, 2024 Iowa tornadoes.

Good starter for county-specific severe weather event presets using selected-county context, radar, warnings, and storm reports.
Building Report
Retrieving historical weather products, timelines, and report output. PDF downloads may continue in the background.