Alert archive / Iowa / 1999
Weather alerts in Iowa, May 1999
138 weather alerts in May 1999, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in May 1999. Tap one for its archive.
- Alerts
- 138
- Warnings
- 124
- Watches
- 14
- Advisories
- 0
- Busiest day
- May 16, 199987 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Lyon, Plymouth, Sioux | 5 hr |
| May 10, 7:15 PM CDT | Severe Thunderstorm Watch | SPC | Audubon, Carroll, Cass, Crawford, Fremont, Harrison and 5 more | 6 hr |
| May 11, 1:08 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 32 min |
| May 11, 3:42 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 33 min |
| May 14, 10:30 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Mills, Pottawattamie | 6 hr |
| May 15, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | Fremont, Mills | 6 hr |
| May 16, 1:05 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 30 min |
| May 16, 3:52 AM CDT | Severe Thunderstorm Warning | DMX | Clarke | 33 min |
| May 16, 4:09 AM CDT | Severe Thunderstorm Warning | DMX | Warren | 36 min |
| May 16, 6:00 AM CDT | Severe Thunderstorm Watch | SPC | Cherokee, Crawford, Fremont, Harrison, Ida, Lyon and 11 more | 5 hr |
| May 16, 7:33 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 32 min |
| May 16, 7:51 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 24 min |
| May 16, 8:47 AM CDT | Severe Thunderstorm Warning | DMX | Greene | 33 min |
| May 16, 9:19 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene | 36 min |
| May 16, 9:20 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Ida | 25 min |
| May 16, 9:24 AM CDT | Severe Thunderstorm Warning | DMX | Sac | 41 min |
| May 16, 9:45 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 64 more | 5 hr |
| May 16, 10:12 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Story | 33 min |
| May 16, 10:28 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 32 min |
| May 16, 10:47 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Hardin | 33 min |
| May 16, 10:58 AM CDT | Severe Thunderstorm Warning | DMX | Webster | 32 min |
| May 16, 11:18 AM CDT | Severe Thunderstorm Warning | DMX | Hardin | 32 min |
| May 16, 11:23 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Wright | 47 min |
| May 16, 12:00 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 45 min |
| May 16, 12:27 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 63 min |
| May 16, 12:40 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 65 min |
| May 16, 12:46 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 34 min |
| May 16, 12:55 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 60 min |
| May 16, 1:18 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 57 min |
| May 16, 1:28 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 32 min |
| May 16, 1:43 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 62 min |
| May 16, 1:53 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 62 min |
| May 16, 2:05 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton | 55 min |
| May 16, 2:14 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 66 min |
| May 16, 2:15 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Buchanan, Clayton, Clinton and 8 more | 6 hr |
| May 16, 2:18 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 47 min |
| May 16, 2:36 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 44 min |
| May 16, 2:42 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 33 min |
| May 16, 2:52 PM CDT | Tornado Warning | OAX | Mills | 33 min |
| May 16, 2:56 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 49 min |
| May 16, 2:57 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 48 min |
| May 16, 3:00 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Butler and 37 more | 6 hr |
| May 16, 3:07 PM CDT | Tornado Warning | OAX | Harrison | 33 min |
| May 16, 3:19 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 36 min |
| May 16, 3:23 PM CDT | Tornado Warning | OAX | Mills | 37 min |
| May 16, 3:24 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 36 min |
| May 16, 3:32 PM CDT | Tornado Warning | OAX | Monona | 33 min |
| May 16, 3:37 PM CDT | Tornado Warning | OAX | Harrison | 48 min |
| May 16, 3:38 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 47 min |
| May 16, 3:40 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 65 min |
| May 16, 3:42 PM CDT | Tornado Warning | DMX | Crawford | 33 min |
| May 16, 3:47 PM CDT | Tornado Warning | OAX | Pottawattamie | 48 min |
| May 16, 3:49 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 26 min |
| May 16, 3:56 PM CDT | Tornado Warning | OAX | Mills | 34 min |
| May 16, 4:00 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 30 min |
| May 16, 4:13 PM CDT | Tornado Warning | DMX | Crawford | 17 min |
| May 16, 4:16 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee | 29 min |
| May 16, 4:20 PM CDT | Tornado Warning | DMX | Crawford | 50 min |
| May 16, 4:20 PM CDT | Tornado Warning | FSD | Ida | 30 min |
| May 16, 4:22 PM CDT | Tornado Warning | OAX | Harrison | 48 min |
| May 16, 4:24 PM CDT | Tornado Warning | OAX | Pottawattamie | 51 min |
| May 16, 4:27 PM CDT | Tornado Warning | OAX | Mills | 33 min |
| May 16, 4:33 PM CDT | Severe Thunderstorm Warning | DMX | Hardin | 32 min |
| May 16, 4:38 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy | 32 min |
| May 16, 4:43 PM CDT | Tornado Warning | DMX | Sac | 47 min |
| May 16, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Chickasaw and 10 more | 6 hr |
| May 16, 4:55 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 35 min |
| May 16, 5:01 PM CDT | Tornado Warning | OAX | Shelby | 44 min |
| May 16, 5:05 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Woodbury | 30 min |
| May 16, 5:08 PM CDT | Flash Flood Warning | ARX | Clayton, Fayette | 10 hr |
| May 16, 5:11 PM CDT | Tornado Warning | OAX | Harrison | 34 min |
| May 16, 5:14 PM CDT | Tornado Warning | OAX | Pottawattamie | 46 min |
| May 16, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Cerro Gordo, Chickasaw, Clay, Emmet, Floyd, Hancock and 7 more | 6 hr |
| May 16, 5:33 PM CDT | Tornado Warning | OAX | Mills | 37 min |
| May 16, 5:41 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson, Osceola | 34 min |
| May 16, 5:45 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien | 30 min |
| May 16, 5:45 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 35 min |
| May 16, 5:49 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 71 min |
| May 16, 5:52 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 68 min |
| May 16, 5:55 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 35 min |
| May 16, 6:00 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 45 min |
| May 16, 6:00 PM CDT | Tornado Warning | OAX | Pottawattamie | 30 min |
| May 16, 6:11 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery | 49 min |
| May 16, 6:13 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 32 min |
| May 16, 6:17 PM CDT | Flash Flood Warning | DMX | Hardin | 2 hr |
| May 16, 6:26 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 34 min |
| May 16, 6:33 PM CDT | Tornado Warning | OAX | Pottawattamie | 32 min |
| May 16, 6:37 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery | 48 min |
| May 16, 6:38 PM CDT | Tornado Warning | DMX | Audubon, Cass | 47 min |
| May 16, 6:43 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 47 min |
| May 16, 6:43 PM CDT | Flash Flood Warning | OAX | Pottawattamie | 6 hr |
| May 16, 6:55 PM CDT | Tornado Warning | OAX | Mills, Montgomery | 35 min |
| May 16, 7:00 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 90 min |
| May 16, 7:09 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jones | 61 min |
| May 16, 7:25 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 95 min |
| May 16, 7:35 PM CDT | Flash Flood Warning | DMX | Black Hawk | 115 min |
| May 16, 7:37 PM CDT | Flash Flood Warning | OAX | Montgomery | 6 hr |
| May 16, 7:39 PM CDT | Flash Flood Warning | DVN | Buchanan | 4 hr |
| May 16, 7:44 PM CDT | Tornado Warning | DMX | Boone, Dallas | 31 min |
| May 16, 7:52 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Polk, Warren | 48 min |
| May 16, 7:53 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 22 min |
| May 16, 7:54 PM CDT | Flash Flood Warning | DMX | Bremer | 3 hr |
| May 16, 8:16 PM CDT | Flash Flood Warning | DMX | Cass | 3 hr |
| May 16, 8:17 PM CDT | Tornado Warning | DMX | Boone, Story | 33 min |
| May 16, 8:36 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall | 49 min |
| May 16, 8:44 PM CDT | Tornado Warning | DMX | Hamilton, Story | 31 min |
| May 16, 8:51 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 49 min |
| May 16, 9:00 PM CDT | Tornado Warning | DMX | Hardin | 50 min |
| May 16, 9:00 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Benton, Black Hawk, Boone and 38 more | 6 hr |
| May 16, 9:10 PM CDT | Tornado Warning | DVN | Dubuque | 35 min |
| May 16, 9:43 PM CDT | Flash Flood Warning | DMX | Black Hawk | 77 min |
| May 16, 9:46 PM CDT | Tornado Warning | DVN | Dubuque | 49 min |
| May 16, 10:02 PM CDT | Flash Flood Warning | DMX | Butler | 3 hr |
| May 16, 10:13 PM CDT | Tornado Warning | DVN | Benton | 47 min |
| May 16, 10:34 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 46 min |
| May 16, 10:40 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Johnson, Washington | 45 min |
| May 16, 10:40 PM CDT | Severe Thunderstorm Warning | DVN | Linn | 45 min |
| May 16, 10:47 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee, Louisa | 63 min |
| May 16, 10:47 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Muscatine | 63 min |
| May 16, 10:54 PM CDT | Tornado Warning | DVN | Dubuque | 51 min |
| May 16, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Clinton, Jackson | 6 hr |
| May 16, 11:04 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 31 min |
| May 16, 11:15 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 50 min |
| May 16, 11:28 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 47 min |
| May 16, 11:36 PM CDT | Flash Flood Warning | DVN | Dubuque | 6 hr |
| May 16, 11:36 PM CDT | Flash Flood Warning | DVN | Buchanan, Delaware | 6 hr |
| May 16, 11:45 PM CDT | Severe Thunderstorm Watch | SPC | Des Moines, Lee | 5 hr |
| May 17, 8:47 AM CDT | Flash Flood Warning | DMX | Black Hawk | 6 hr |
| May 22, 5:03 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 42 min |
| May 22, 5:32 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 28 min |
| May 22, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | Fremont, Harrison, Mills, Pottawattamie, Shelby | 4 hr |
| May 22, 7:09 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 31 min |
| May 22, 7:15 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 35 min |
| May 27, 4:11 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 34 min |
| May 27, 5:57 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Pocahontas | 33 min |
| May 27, 6:46 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 49 min |
| May 27, 7:14 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 46 min |
| May 30, 5:45 PM CDT | Flash Flood Warning | OAX | Page | 3 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 79 |
| Tornado Warning | 31 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 2 |
| Flooding | |
| Flash Flood Warning | 14 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Mills County15
- Pottawattamie County12
- Harrison County10
- Black Hawk County10
- Buchanan County9
- Fayette County9
- Dubuque County9
- Crawford County8
- Shelby County8
- Hardin County8
- Clayton County8
- Cass County7
- Monona County7
- Montgomery County7
- Ida County7
- Woodbury County7
- Boone County7
- Fremont County6
- Benton County6
- Cherokee County6
- Bremer County6
- Butler County6
- Story County6
- Jasper County5
- Warren County5
- Dallas County5
- Hamilton County5
- Linn County5
- Winneshiek County5
- Jackson County5
- Plymouth County4
- Audubon County4
- Clarke County4
- Page County4
- Greene County4
- Buena Vista County4
- Sac County4
- Chickasaw County4
- Dickinson County4
- Franklin County4
59 more counties
- Grundy County4
- Madison County4
- Marshall County4
- Polk County4
- Tama County4
- Webster County4
- Delaware County4
- Jones County4
- Carroll County3
- Adair County3
- Adams County3
- Calhoun County3
- Decatur County3
- Howard County3
- Johnson County3
- Keokuk County3
- Lee County3
- Pocahontas County3
- Ringgold County3
- Taylor County3
- Union County3
- Washington County3
- Wright County3
- Allamakee County3
- Clinton County3
- Lyon County2
- Sioux County2
- O'Brien County2
- Osceola County2
- Appanoose County2
- Cerro Gordo County2
- Clay County2
- Davis County2
- Emmet County2
- Floyd County2
- Guthrie County2
- Hancock County2
- Henry County2
- Humboldt County2
- Iowa County2
- Jefferson County2
- Kossuth County2
- Lucas County2
- Mahaska County2
- Marion County2
- Mitchell County2
- Monroe County2
- Palo Alto County2
- Poweshiek County2
- Van Buren County2
- Wapello County2
- Wayne County2
- Winnebago County2
- Worth County2
- Cedar County2
- Muscatine County2
- Des Moines County2
- Louisa County1
- Scott County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.