Iowa, 1999
The year's recorded storm events, federal disaster declarations and flood insurance claims.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders.
Events by hazard
Includes events recorded by forecast zone. The state's yearly total for 1999 was 1,640 against 1,847 in 1998.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 16 May 1999 | Harrison | Tornado | F3 | $1,900,000 | 2 | 16 |
| 19 Jul 1999 | Floyd | Flash Flood | — | $750,000 | 1 | — |
| 1 Jan 1999 | Grundy | Winter Storm | — | $10,000 | 1 | — |
| 1 Jan 1999 | Polk | Winter Storm | — | $10,000 | 1 | — |
| 1 Jan 1999 | Dubuque | Winter Storm | — | — | 1 | — |
| 1 Jan 1999 | Van Buren | Winter Storm | — | — | 1 | — |
| 28 Jul 1999 | Buena Vista | Heat | — | — | — | 10 |
| 8 Apr 1999 | Lucas | Tornado | F3 | $250,000 | — | 4 |
| 8 Apr 1999 | Hamilton | Thunderstorm Wind | 70 mph | $20,000 | — | 4 |
| 2 Jul 1999 | Woodbury | Flash Flood | — | $8,000,000 | — | 2 |
| 8 Apr 1999 | Adair | Tornado | F4 | $1,000,000 | — | 2 |
| 8 Apr 1999 | Story | Tornado | F1 | $800,000 | — | 2 |
| 16 May 1999 | Linn | Thunderstorm Wind | — | $500,000 | — | 2 |
| 11 Feb 1999 | Louisa | Thunderstorm Wind | 72 mph | $20,000 | — | 2 |
| 17 May 1999 | Dubuque | Flash Flood | — | $16,000,000 | — | — |
| 8 Apr 1999 | Union | Tornado | F4 | $2,000,000 | — | 1 |
| 8 Apr 1999 | Jasper | Tornado | F2 | $1,000,000 | — | 1 |
| 8 Apr 1999 | Adams | Tornado | F4 | $1,000,000 | — | 1 |
| 8 Apr 1999 | Page | Tornado | F1 | $100,000 | — | 1 |
| 11 Feb 1999 | Howard | Winter Storm | — | $60,000 | — | 1 |
| 10 May 1999 | Humboldt | High Wind | 58 mph | $40,000 | — | 1 |
| 8 Apr 1999 | Story | Thunderstorm Wind | 75 mph | $40,000 | — | 1 |
| 6 Jun 1999 | Hancock | Thunderstorm Wind | 64 mph | $25,000 | — | 1 |
| 10 Jun 1999 | Warren | Lightning | — | $10,000 | — | 1 |
| 11 Feb 1999 | Lee | Thunderstorm Wind | 60 mph | — | — | 1 |
| 16 May 1999 | Dubuque | Flash Flood | — | $5,000,000 | — | — |
| 7 Aug 1999 | Pottawattamie | Flash Flood | — | $4,000,000 | — | — |
| 17 May 1999 | Fayette | Flood | — | $2,500,000 | — | — |
| 17 May 1999 | Clayton | Flood | — | $2,500,000 | — | — |
| 16 May 1999 | Fayette | Flash Flood | — | $2,000,000 | — | — |
| 16 May 1999 | Clayton | Flash Flood | — | $1,500,000 | — | — |
| 19 Jul 1999 | Worth | Flash Flood | — | $1,100,000 | — | — |
| 19 Jul 1999 | Black Hawk | Flood | — | $1,000,000 | — | — |
| 19 Jul 1999 | Butler | Flood | — | $1,000,000 | — | — |
| 2 Jul 1999 | Black Hawk | Flash Flood | — | $1,000,000 | — | — |
| 16 May 1999 | Black Hawk | Flash Flood | — | $1,200,000 | — | — |
| 19 Jul 1999 | Cerro Gordo | Flash Flood | — | $1,000,000 | — | — |
| 19 Jul 1999 | Mitchell | Flash Flood | — | $600,000 | — | — |
| 16 May 1999 | Black Hawk | Flood | — | $750,000 | — | — |
| 18 Jul 1999 | Chickasaw | Flash Flood | — | $500,000 | — | — |
Up to 40 events with deaths, injuries, damage of $50,000 or more, or a tornado rating, ranked by deaths, injuries and damage.
Federal disaster declarations in 1999
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 22 Jul 1999 | DR-1282 | Major disaster | Severe Storm | Severe Storms And Flooding | 21 |
| 21 May 1999 | DR-1277 | Major disaster | Severe Storm | Severe Storms, Flooding, And Tornadoes | 17 |
Flood insurance claims with a 1999 date of loss
1,121 NFIP claims, 841 of them paid, for $8,024,140.
Sources: NOAA NCEI Storm Events through 30 Jun 2026; OpenFEMA DisasterDeclarationsSummaries v2 (1 Oct 2026); OpenFEMA NfipClaims v3 (8 Sep 2026). Built 1 Oct 2026.