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Storm Events Database
Event Details
| Event | Thunderstorm Wind |
| Magnitude | 52 kts. |
| State | IOWA |
| County/Area | GRUNDY |
| WFO | DMX |
| Begin Date | 07/27/2008 14:50:00 CST-6 |
| Begin Range | 1 |
| Begin Azimuth | S |
| Begin Location | BEAMAN |
| Begin Lat/Lon | 42.22/-92.82 |
| End Date | 07/27/2008 14:50:00 CST-6 |
| Deaths Direct/Indirect | 0/0 (fatality details below, when available...) |
| Injuries Direct/Indirect | 0/0 |
| Property Damage | 3.00K |
| Crop Damage | 0.00K |
| Episode Narrative | A very unstable airmass was in place over Iowa as a warm front lifted north slowly into the state. The warm air had moved in aloft as freezing levels increased from 14,600 feet in the morning, to 16,200 by the evening hours. The atmosphere was a high CAPE, moderate to high shear with CAPE rising to near 5000 J/kg by late afternoon. Lifted indices fell to -8 to -13 C. A speed max moved across the state during the late afternoon and evening hours with shear increasing to between 45 and 60 kts. Downdraft CAPE was in the 1000 to 1400 J/kg range with available CAPE in the -10 to -30 C. layer of the atmosphere in the 800 to 1200 J/kg range. The LCL during the evening was around 1000 meters. A cluster of thunderstorms formed by the mid afternoon hours over northern Iowa. The storms propagated and grew to the southeast with all phases of severe weather occurring during the late afternoon and evening hours. Three tornadoes touched down. The strongest was in Polk County just southwest of Elkhart. The tornado damaged 2 houses and caused considerable tree damage. Parts of the house were blown up into the trees. The other touchdowns were relatively minor with one touching down briefly near Valeria in Jasper County, another just south of Newton in Jasper County. Straight line winds derailed 21 cars of a Burlington Northern train west of Albia. The storms formed into a forward propagating MCS and beta bow element before reaching central Iowa. An 82 MPH wind gust was recorded by a schoolnet site just east of Boone. There were numerous reports of winds to around 70 MPH as the storm moved south across the east side of Des Moines, and on southeast into southeast Iowa. Tree damage along the length of the bow echo was widespread with numerous uprooting reports, trees down, and power poles knocked down. In Poweshiek County, high winds north of Montezuma hit a farm. The barn was toppled completely. Surprisingly, a donkey that was in the barn walked out without a scratch. Most of the hail with the storm was around an inch in diameter. There was a report of 2 inch diameter hail in the New Virginia area of Warren County. Several golf ball size hail reports were received over southern Iowa as the air column cooled by the rainfall. Flash flooding became a problem in parts of southeast Iowa where rainfall of 2 to 3 inches fell in a short period of time. Many of these areas were areas that had been hit by heavy rainfall just a few days before. In Wayne County, 2 to 3 inches fell in parts of the northwest sections of the county, washing out a gravel road southwest of Derby. The storms moved southeast of the state by late evening...however thunderstorms re-fired in a line extending from near Ottumwa, through Ames, toward Fort Dodge. The storms produced hail and heavy rain with baseball size hail reported just south of Boone for example. Hail of 2.5 inches in diameter fell in Marion County at Knoxville as well. During the night, the storms continued to develop farther to the west. They produced hail up to golf ball and larger in size in Crawford. One storm produced softball size hail west of Kiron around sunrise. As the night progressed, the pattern transitioned to more heavy rain than severe weather. Flash flooding occurred as lines of thunderstorms trained across the same areas for a several hour period. Rainfall from the storms was anywhere from 3.5 to 7 inches in several areas with 6.73 inches in Guthrie Center one of the higher amounts. An unofficial report from near Brushy Creek, about 4 miles north of Guthrie Center, indicated rainfall of 8.3 inches. In Stuart, a report of 7 inches was received, while in the metro Des Moines area the highest total was 4.48 inches in Ankeny. River and stream flooding became a problem during the day on the 28th with several rivers reaching moderate flood stage. Major flooding occurred on Four Mile Creek in Des Moines. |
| Event Narrative |
All events for this episode:
| Location | County/Zone | St. | Date | Time | T.Z. | Type | Mag | Dth | Inj | PrD | CrD |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Totals: | 0 | 0 | 2.531M | 949.00K | |||||||
| CLARE | WEBSTER CO. | IA | 07/27/2008 | 14:05 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 10.00K | 0.00K |
| CLARE | WEBSTER CO. | IA | 07/27/2008 | 14:09 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 15.00K | 0.00K |
| FT DODGE | WEBSTER CO. | IA | 07/27/2008 | 14:12 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 10.00K | 0.00K |
| FT DODGE | WEBSTER CO. | IA | 07/27/2008 | 14:17 | CST-6 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| FT DODGE | WEBSTER CO. | IA | 07/27/2008 | 14:18 | CST-6 | Hail | 0.88 in. | 0 | 0 | 1.00K | 10.00K |
| FT DODGE | WEBSTER CO. | IA | 07/27/2008 | 14:28 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 15.00K | 0.00K |
| ALLEMAN | POLK CO. | IA | 07/27/2008 | 14:30 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 50.00K | 25.00K |
| HARCOURT | WEBSTER CO. | IA | 07/27/2008 | 14:35 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 5.00K | 0.00K |
| HARCOURT | WEBSTER CO. | IA | 07/27/2008 | 14:37 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 5.00K | 0.00K |
| BEAMAN | GRUNDY CO. | IA | 07/27/2008 | 14:50 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 3.00K | 0.00K |
| ANKENY | POLK CO. | IA | 07/27/2008 | 15:00 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| OGDEN | BOONE CO. | IA | 07/27/2008 | 15:02 | CST-6 | Thunderstorm Wind | 69 kts. EG | 0 | 0 | 75.00K | 25.00K |
| BOONE | BOONE CO. | IA | 07/27/2008 | 15:13 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 10.00K | 0.00K |
| ERICSON | BOONE CO. | IA | 07/27/2008 | 15:15 | CST-6 | Thunderstorm Wind | 71 kts. MG | 0 | 0 | 50.00K | 25.00K |
| BOONE | BOONE CO. | IA | 07/27/2008 | 15:15 | CST-6 | Thunderstorm Wind | 71 kts. MG | 0 | 0 | 25.00K | 0.00K |
| LUTHER | BOONE CO. | IA | 07/27/2008 | 15:16 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 10.00K | 0.00K |
| LUTHER | BOONE CO. | IA | 07/27/2008 | 15:16 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 10.00K |
| PLEASANT HILL | BOONE CO. | IA | 07/27/2008 | 15:22 | CST-6 | Flash Flood | 0 | 0 | 5.00K | 0.00K | |
| SLATER | STORY CO. | IA | 07/27/2008 | 15:23 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 5.00K | 0.00K |
| LUTHER | BOONE CO. | IA | 07/27/2008 | 15:23 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 25.00K | 0.00K |
| ERICSON | BOONE CO. | IA | 07/27/2008 | 15:24 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 2.00K | 0.00K |
| POLK CITY | POLK CO. | IA | 07/27/2008 | 15:25 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 5.00K | 0.00K |
| GALESBURG | JASPER CO. | IA | 07/27/2008 | 15:26 | CST-6 | Hail | 1.00 in. | 0 | 0 | 3.00K | 10.00K |
| SHELDAHL | BOONE CO. | IA | 07/27/2008 | 15:29 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 75.00K | 25.00K |
| FARRAR | POLK CO. | IA | 07/27/2008 | 15:30 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 20.00K | 5.00K |
| HUXLEY | STORY CO. | IA | 07/27/2008 | 15:30 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 15.00K | 0.00K |
| ALLEMAN | POLK CO. | IA | 07/27/2008 | 15:30 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 50.00K | 25.00K |
| ENTERPRISE | POLK CO. | IA | 07/27/2008 | 15:32 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 10.00K | 5.00K |
| ALLEMAN | POLK CO. | IA | 07/27/2008 | 15:34 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 50.00K | 25.00K |
| FARRAR | POLK CO. | IA | 07/27/2008 | 15:34 | CST-6 | Tornado | EF1 | 0 | 0 | 50.00K | 10.00K |
| SLATER | STORY CO. | IA | 07/27/2008 | 15:35 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 25.00K | 10.00K |
| ORALABOR | POLK CO. | IA | 07/27/2008 | 15:35 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 10.00K | 5.00K |
| ELKHART | POLK CO. | IA | 07/27/2008 | 15:35 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 10.00K | 5.00K |
| DODGE FLD ARPT | POLK CO. | IA | 07/27/2008 | 15:37 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 0.00K | 0.00K |
| BONDURANT | POLK CO. | IA | 07/27/2008 | 15:38 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 10.00K | 5.00K |
| FARRAR | POLK CO. | IA | 07/27/2008 | 15:40 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 10.00K | 0.00K |
| BONDURANT | POLK CO. | IA | 07/27/2008 | 15:40 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 10.00K | 5.00K |
| EARLHAM | MADISON CO. | IA | 07/27/2008 | 15:40 | CST-6 | Hail | 0.75 in. | 0 | 0 | 0.00K | 10.00K |
| BONDURANT | POLK CO. | IA | 07/27/2008 | 15:40 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 15.00K | 5.00K |
| ALTOONA | POLK CO. | IA | 07/27/2008 | 15:42 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 15.00K | 0.00K |
| URBANDALE | POLK CO. | IA | 07/27/2008 | 15:42 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 2.00K | 0.00K |
| MITCHELLVILLE | POLK CO. | IA | 07/27/2008 | 15:42 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 50.00K | 10.00K |
| POLK CITY | POLK CO. | IA | 07/27/2008 | 15:43 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 5.00K | 0.00K |
| DES MOINES | POLK CO. | IA | 07/27/2008 | 15:45 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 20.00K | 0.00K |
| ALTOONA | POLK CO. | IA | 07/27/2008 | 15:45 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 25.00K | 0.00K |
| YOUNGSTOWN | POLK CO. | IA | 07/27/2008 | 15:45 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 5.00K | 0.00K |
| ALTOONA | POLK CO. | IA | 07/27/2008 | 15:45 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 5.00K | 0.00K |
| ALTOONA | POLK CO. | IA | 07/27/2008 | 15:47 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 5.00K | 0.00K |
| NEW VIRGINIA | WARREN CO. | IA | 07/27/2008 | 15:50 | CST-6 | Hail | 1.75 in. | 0 | 0 | 25.00K | 10.00K |
| VALERIA | JASPER CO. | IA | 07/27/2008 | 15:51 | CST-6 | Tornado | EF0 | 0 | 0 | 0.00K | 0.00K |
| NEW VIRGINIA | WARREN CO. | IA | 07/27/2008 | 15:52 | CST-6 | Hail | 1.00 in. | 0 | 0 | 2.00K | 10.00K |
| NEW VIRGINIA | WARREN CO. | IA | 07/27/2008 | 15:54 | CST-6 | Hail | 2.00 in. | 0 | 0 | 75.00K | 10.00K |
| FARRAR | POLK CO. | IA | 07/27/2008 | 15:55 | CST-6 | Thunderstorm Wind | 69 kts. EG | 0 | 0 | 50.00K | 25.00K |
| PRAIRIE CITY | JASPER CO. | IA | 07/27/2008 | 16:00 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 15.00K | 0.00K |
| ALTOONA | POLK CO. | IA | 07/27/2008 | 16:00 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 10.00K | 0.00K |
| BONDURANT | POLK CO. | IA | 07/27/2008 | 16:15 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 25.00K | 0.00K |
| NEWTON MUNI ARPT | JASPER CO. | IA | 07/27/2008 | 16:15 | CST-6 | Tornado | EF0 | 0 | 0 | 0.00K | 0.00K |
| GRINNELL | POWESHIEK CO. | IA | 07/27/2008 | 16:18 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 40.00K | 0.00K |
| KNOXVILLE ARPT | MARION CO. | IA | 07/27/2008 | 16:25 | CST-6 | Thunderstorm Wind | 51 kts. MG | 0 | 0 | 3.00K | 0.00K |
| MONTEZUMA | POWESHIEK CO. | IA | 07/27/2008 | 16:25 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 35.00K | 5.00K |
| MONTEZUMA | POWESHIEK CO. | IA | 07/27/2008 | 16:29 | CST-6 | Thunderstorm Wind | 54 kts. MG | 0 | 0 | 5.00K | 0.00K |
| MONTEZUMA | POWESHIEK CO. | IA | 07/27/2008 | 16:30 | CST-6 | Thunderstorm Wind | 57 kts. MG | 0 | 0 | 10.00K | 5.00K |
| MONTEZUMA | POWESHIEK CO. | IA | 07/27/2008 | 16:31 | CST-6 | Thunderstorm Wind | 57 kts. MG | 0 | 0 | 10.00K | 5.00K |
| ALBIA | MONROE CO. | IA | 07/27/2008 | 16:35 | CST-6 | Thunderstorm Wind | 69 kts. EG | 0 | 0 | 100.00K | 10.00K |
| LUCAS | LUCAS CO. | IA | 07/27/2008 | 16:44 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 10.00K |
| DERBY | LUCAS CO. | IA | 07/27/2008 | 16:50 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 20.00K | 0.00K |
| HITEMAN | MONROE CO. | IA | 07/27/2008 | 16:53 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 3.00K | 0.00K |
| MADRID | BOONE CO. | IA | 07/27/2008 | 16:55 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 50.00K | 5.00K |
| EDDYVILLE | WAPELLO CO. | IA | 07/27/2008 | 16:55 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 3.00K | 0.00K |
| HOCKING | MONROE CO. | IA | 07/27/2008 | 17:00 | CST-6 | Thunderstorm Wind | 69 kts. EG | 0 | 0 | 35.00K | 25.00K |
| MONROVIA | APPANOOSE CO. | IA | 07/27/2008 | 17:00 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 3.00K | 0.00K |
| CENTERVILLE | APPANOOSE CO. | IA | 07/27/2008 | 17:00 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 5.00K | 0.00K |
| (OTM)OTTUMWA INDSTRL | WAPELLO CO. | IA | 07/27/2008 | 17:04 | CST-6 | Thunderstorm Wind | 54 kts. MG | 0 | 0 | 2.00K | 0.00K |
| AGENCY | WAPELLO CO. | IA | 07/27/2008 | 17:05 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 25.00K | 5.00K |
| HUMESTON | WAYNE CO. | IA | 07/27/2008 | 17:10 | CST-6 | Thunderstorm Wind | 52 kts. MG | 0 | 0 | 3.00K | 0.00K |
| CAMBRIA | WAYNE CO. | IA | 07/27/2008 | 17:12 | CST-6 | Hail | 0.88 in. | 0 | 0 | 2.00K | 10.00K |
| OTTUMWA | WAPELLO CO. | IA | 07/27/2008 | 17:14 | CST-6 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| CAMBRIA | WAYNE CO. | IA | 07/27/2008 | 17:15 | CST-6 | Flash Flood | 0 | 0 | 25.00K | 0.00K | |
| OTTUMWA | WAPELLO CO. | IA | 07/27/2008 | 17:15 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 10.00K | 0.00K |
| CAMBRIA | WAYNE CO. | IA | 07/27/2008 | 17:16 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 5.00K | 0.00K |
| CAMBRIA | WAYNE CO. | IA | 07/27/2008 | 17:16 | CST-6 | Hail | 0.88 in. | 0 | 0 | 3.00K | 0.00K |
| CAMBRIA | WAYNE CO. | IA | 07/27/2008 | 17:20 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| BLOOMFIELD | DAVIS CO. | IA | 07/27/2008 | 17:27 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 5.00K | 0.00K |
| DES MOINES | POLK CO. | IA | 07/27/2008 | 17:30 | CST-6 | Hail | 0.75 in. | 0 | 0 | 0.00K | 0.00K |
| BLOOMFIELD | DAVIS CO. | IA | 07/27/2008 | 17:30 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 10.00K | 0.00K |
| BLOOMFIELD | DAVIS CO. | IA | 07/27/2008 | 17:30 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 25.00K | 0.00K |
| BLOOMFIELD | DAVIS CO. | IA | 07/27/2008 | 17:33 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 5.00K | 0.00K |
| SEWAL | WAYNE CO. | IA | 07/27/2008 | 17:38 | CST-6 | Hail | 1.25 in. | 0 | 0 | 3.00K | 10.00K |
| SEWAL | WAYNE CO. | IA | 07/27/2008 | 17:38 | CST-6 | Hail | 1.25 in. | 0 | 0 | 3.00K | 10.00K |
| PULASKI | DAVIS CO. | IA | 07/27/2008 | 17:40 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 100.00K | 10.00K |
| SEWAL | WAYNE CO. | IA | 07/27/2008 | 17:44 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 10.00K |
| CAMBRIA | WAYNE CO. | IA | 07/27/2008 | 18:00 | CST-6 | Flash Flood | 0 | 0 | 15.00K | 20.00K | |
| MELROSE | MONROE CO. | IA | 07/27/2008 | 19:00 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 10.00K |
| ICONIUM | APPANOOSE CO. | IA | 07/27/2008 | 19:15 | CST-6 | Hail | 1.00 in. | 0 | 0 | 2.00K | 10.00K |
| DARBYVILLE | APPANOOSE CO. | IA | 07/27/2008 | 19:24 | CST-6 | Hail | 1.75 in. | 0 | 0 | 15.00K | 10.00K |
| FORBUSH | APPANOOSE CO. | IA | 07/27/2008 | 19:30 | CST-6 | Hail | 1.25 in. | 0 | 0 | 5.00K | 10.00K |
| MOULTON | APPANOOSE CO. | IA | 07/27/2008 | 19:44 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 10.00K |
| RUSSELL | LUCAS CO. | IA | 07/27/2008 | 19:53 | CST-6 | Hail | 1.00 in. | 0 | 0 | 3.00K | 10.00K |
| FORBUSH | APPANOOSE CO. | IA | 07/27/2008 | 20:17 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 5.00K | 50.00K |
| NAPIER | BOONE CO. | IA | 07/27/2008 | 21:10 | CST-6 | Hail | 0.88 in. | 0 | 0 | 1.00K | 10.00K |
| SLATER | STORY CO. | IA | 07/27/2008 | 21:18 | CST-6 | Hail | 0.88 in. | 0 | 0 | 2.00K | 3.00K |
| ALLEMAN | POLK CO. | IA | 07/27/2008 | 21:31 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 5.00K |
| ALLEMAN | POLK CO. | IA | 07/27/2008 | 21:32 | CST-6 | Hail | 1.00 in. | 0 | 0 | 5.00K | 0.00K |
| ANKENY | POLK CO. | IA | 07/27/2008 | 21:35 | CST-6 | Hail | 1.00 in. | 0 | 0 | 5.00K | 3.00K |
| ANKENY | POLK CO. | IA | 07/27/2008 | 21:38 | CST-6 | Hail | 1.00 in. | 0 | 0 | 5.00K | 10.00K |
| ANKENY | POLK CO. | IA | 07/27/2008 | 21:38 | CST-6 | Hail | 1.00 in. | 0 | 0 | 5.00K | 3.00K |
| BOONE | BOONE CO. | IA | 07/27/2008 | 21:56 | CST-6 | Hail | 1.00 in. | 0 | 0 | 1.00K | 5.00K |
| BOONE | BOONE CO. | IA | 07/27/2008 | 21:58 | CST-6 | Hail | 2.75 in. | 0 | 0 | 15.00K | 10.00K |
| KNOXVILLE | MARION CO. | IA | 07/27/2008 | 21:59 | CST-6 | Hail | 1.00 in. | 0 | 0 | 3.00K | 0.00K |
| ERICSON | BOONE CO. | IA | 07/27/2008 | 22:03 | CST-6 | Hail | 1.75 in. | 0 | 0 | 5.00K | 10.00K |
| BOXHOLM | BOONE CO. | IA | 07/27/2008 | 22:18 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 10.00K |
| PLEASANTVILLE | MARION CO. | IA | 07/27/2008 | 22:24 | CST-6 | Hail | 0.88 in. | 0 | 0 | 2.00K | 0.00K |
| WOLF | BOONE CO. | IA | 07/27/2008 | 22:29 | CST-6 | Hail | 1.75 in. | 0 | 0 | 5.00K | 10.00K |
| FRASER | BOONE CO. | IA | 07/27/2008 | 22:30 | CST-6 | Hail | 2.75 in. | 0 | 0 | 50.00K | 5.00K |
| KNOXVILLE | MARION CO. | IA | 07/27/2008 | 22:33 | CST-6 | Hail | 2.50 in. | 0 | 0 | 100.00K | 0.00K |
| BOONE | BOONE CO. | IA | 07/27/2008 | 22:36 | CST-6 | Hail | 1.25 in. | 0 | 0 | 5.00K | 10.00K |
| ALLEMAN | POLK CO. | IA | 07/27/2008 | 22:55 | CST-6 | Flood | 0 | 0 | 10.00K | 5.00K | |
| NEW VIRGINIA | WARREN CO. | IA | 07/27/2008 | 23:00 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| GUTHRIE CENTER | GUTHRIE CO. | IA | 07/27/2008 | 23:20 | CST-6 | Heavy Rain | 0 | 0 | 20.00K | 0.00K | |
| ALBIA | MONROE CO. | IA | 07/27/2008 | 23:20 | CST-6 | Flash Flood | 0 | 0 | 25.00K | 0.00K | |
| HITEMAN | MONROE CO. | IA | 07/28/2008 | 00:00 | CST-6 | Flash Flood | 0 | 0 | 10.00K | 5.00K | |
| LOVILIA | MONROE CO. | IA | 07/28/2008 | 00:00 | CST-6 | Flash Flood | 0 | 0 | 5.00K | 5.00K | |
| INDIANOLA | WARREN CO. | IA | 07/28/2008 | 00:14 | CST-6 | Flash Flood | 0 | 0 | 25.00K | 0.00K | |
| CHARITON | LUCAS CO. | IA | 07/28/2008 | 00:15 | CST-6 | Flash Flood | 0 | 0 | 25.00K | 0.00K | |
| CENTERVILLE | APPANOOSE CO. | IA | 07/28/2008 | 00:20 | CST-6 | Flash Flood | 0 | 0 | 25.00K | 5.00K | |
| ANKENY | POLK CO. | IA | 07/28/2008 | 01:00 | CST-6 | Flood | 0 | 0 | 25.00K | 0.00K | |
| NEW VIRGINIA | WARREN CO. | IA | 07/28/2008 | 01:03 | CST-6 | Flash Flood | 0 | 0 | 10.00K | 5.00K | |
| ASHAWA | POLK CO. | IA | 07/28/2008 | 01:03 | CST-6 | Hail | 1.00 in. | 0 | 0 | 3.00K | 5.00K |
| ASHAWA | POLK CO. | IA | 07/28/2008 | 01:06 | CST-6 | Flood | 0 | 0 | 25.00K | 0.00K | |
| HADDEN HILL | DALLAS CO. | IA | 07/28/2008 | 01:06 | CST-6 | Flood | 0 | 0 | 5.00K | 0.00K | |
| WINTERSET | MADISON CO. | IA | 07/28/2008 | 01:11 | CST-6 | Hail | 0.88 in. | 0 | 0 | 3.00K | 10.00K |
| WINTERSET | MADISON CO. | IA | 07/28/2008 | 01:20 | CST-6 | Hail | 1.00 in. | 0 | 0 | 2.00K | 10.00K |
| WINTERSET | MADISON CO. | IA | 07/28/2008 | 01:23 | CST-6 | Hail | 1.50 in. | 0 | 0 | 5.00K | 10.00K |
| WINTERSET | MADISON CO. | IA | 07/28/2008 | 01:25 | CST-6 | Hail | 1.00 in. | 0 | 0 | 3.00K | 10.00K |
| OSCEOLA | CLARKE CO. | IA | 07/28/2008 | 01:35 | CST-6 | Flash Flood | 0 | 0 | 10.00K | 5.00K | |
| TRURO | MADISON CO. | IA | 07/28/2008 | 01:36 | CST-6 | Flash Flood | 0 | 0 | 0.00K | 0.00K | |
| WINTERSET | MADISON CO. | IA | 07/28/2008 | 01:36 | CST-6 | Flash Flood | 0 | 0 | 15.00K | 0.00K | |
| TRURO | MADISON CO. | IA | 07/28/2008 | 01:46 | CST-6 | Flash Flood | 0 | 0 | 25.00K | 0.00K | |
| HOWE | ADAIR CO. | IA | 07/28/2008 | 01:58 | CST-6 | Flash Flood | 0 | 0 | 10.00K | 0.00K | |
| LORIMOR | UNION CO. | IA | 07/28/2008 | 02:00 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| WESTSIDE | CRAWFORD CO. | IA | 07/28/2008 | 04:09 | CST-6 | Hail | 1.75 in. | 0 | 0 | 5.00K | 10.00K |
| ARCADIA | CARROLL CO. | IA | 07/28/2008 | 04:16 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 10.00K |
| HALBUR | CARROLL CO. | IA | 07/28/2008 | 04:26 | CST-6 | Hail | 0.88 in. | 0 | 0 | 1.00K | 10.00K |
| TEMPLETON | CARROLL CO. | IA | 07/28/2008 | 04:39 | CST-6 | Hail | 1.00 in. | 0 | 0 | 5.00K | 10.00K |
| KIRON | CRAWFORD CO. | IA | 07/28/2008 | 05:17 | CST-6 | Hail | 4.25 in. | 0 | 0 | 50.00K | 10.00K |
| DELOIT | CRAWFORD CO. | IA | 07/28/2008 | 05:35 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 10.00K |
| MURRAY | CLARKE CO. | IA | 07/28/2008 | 05:40 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| OSCEOLA | CLARKE CO. | IA | 07/28/2008 | 05:40 | CST-6 | Flash Flood | 0 | 0 | 25.00K | 10.00K | |
| DENISON | CRAWFORD CO. | IA | 07/28/2008 | 05:46 | CST-6 | Hail | 1.75 in. | 0 | 0 | 50.00K | 0.00K |
| PROMISE CITY | WAYNE CO. | IA | 07/28/2008 | 05:59 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| PROMISE CITY | WAYNE CO. | IA | 07/28/2008 | 06:01 | CST-6 | Flash Flood | 0 | 0 | 25.00K | 25.00K | |
| MELROSE | MONROE CO. | IA | 07/28/2008 | 06:38 | CST-6 | Flood | 0 | 0 | 25.00K | 0.00K | |
| BAYARD | GUTHRIE CO. | IA | 07/28/2008 | 06:43 | CST-6 | Flood | 0 | 0 | 100.00K | 100.00K | |
| CENTERVILLE | APPANOOSE CO. | IA | 07/28/2008 | 07:00 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| INDIANOLA | WARREN CO. | IA | 07/28/2008 | 07:00 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| WINTERSET | MADISON CO. | IA | 07/28/2008 | 07:00 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| NEW VIRGINIA | WARREN CO. | IA | 07/28/2008 | 07:03 | CST-6 | Flood | 0 | 0 | 50.00K | 10.00K | |
| BERWICK | POLK CO. | IA | 07/28/2008 | 07:11 | CST-6 | Flood | 0 | 0 | 10.00K | 5.00K | |
| OSCEOLA | CLARKE CO. | IA | 07/28/2008 | 08:52 | CST-6 | Flood | 0 | 0 | 10.00K | 10.00K | |
| Totals: | 0 | 0 | 2.531M | 949.00K |
