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Storm Events Database
Event Details:
| Event | Tornado |
| -- Scale | EF1 |
| -- Length | 2.03 Miles |
| -- Width | 190 Yards |
| State | IOWA |
| County/Area | WARREN |
| WFO | DMX |
| Report Source | NWS Storm Survey |
| NCEI Data Source | CSV |
| Begin Date | 2014-06-30 12:27 CST-6 |
| Begin Location | 1NE MARTENSDALE |
| Begin Lat/Lon | 41.3891/-93.7385 |
| End Date | 2014-06-30 12:29 CST-6 |
| End Location | 2ESE MARTENSDALE |
| End Lat/Lon | 41.3659/-93.7144 |
| Deaths Direct/Indirect | 0/0 (fatality details below, when available...) |
| Injuries Direct/Indirect | 0/0 |
| Property Damage | 1.00K |
| Crop Damage | 0.00K |
| Episode Narrative | A very dynamic pattern was in place over the state with a closed low located over southern Canada into the north central U.S. A very strong jet of 85 to 100 kts as present at 250 mb. CAPE by early morning was already 3000 to 4000 J/kg with downdraft CAPE of 1000 to 1400 J/kg. CAPE in the -10 to -30 C layer of the atmosphere was between 1000 and 1400 J/kg. The freezing level was around 14,000 feet with precipitable water values near 2 inches. The LCL remained around 750 meters with 75 J/kg of CAPE in the 0-3 km layer. There was strong shear present, with 60-80 kts of effective shear. A cold front moved into Iowa during the day and moved across the state. This event was similar to the event of 29 June 1998. Thunderstorms formed over northeast Nebraska by sunrise and continued to propagate east into Iowa. The storms intensified as they moved across the state, into a forward moving MCS. As it strengthened into a Derecho, winds of 70 to 80 MPH were reported over a large swath of the state. All modes of severe weather occurred. Widespread wind damage was reported to trees, power lines, and structures from the high winds. In addition, very large hail occurred. Some of the larger hail included three to four inch diameter hail in Calhoun County near Rockwell City, and three and one half inch diameter hail in Warren County at Sandyville. Several tornadoes were confirmed. Very heavy rainfall occurred with the storms. The rain lead to flooding and flash flooding in many areas of northern and central Iowa. By the end of the month, a presidential disaster declaration had been made for the follow 9 Iowa counties: Adams, Clarke, Decatur, Mills, Montgomery, Pottawattamie, Ringgold, Taylor and Wayne. Governor Branstad also requested a disaster declaration for the following 26 Iowa Counties: Allamakee, Buchanan, Buena Vista, Butler, Cherokee, Chickasaw, Clay, Dickinson, Emmet, Fayette, Franklin, Hancock, Humboldt, Ida, Kossuth, Lyon, Osceola, Palo Alto, Plymouth, Pocahontas, Sac, Sioux, Winnebago, Winneshiek, Woodbury, and Wright. The Presidential declaration was granted on 24 July 2014. |
| Event Narrative | This tornado formed north of Martensdale and quickly tracked to the SE, reaching its widest and strongest point just east of the city where it damaged dozens of trees. The surface circulation weakened as it ascended a 100 foot high ridge south of the Middle River and then dissipated about a half mile south of the ridge crest. |
Event Map:
Note: The tornado track is approximate based on the beginning (B) and ending (E) locations. The actual tornado path may differ from a straight line.
All events for this episode:
| Location | County/Zone | St. | Date | Time | T.Z. | Type | Mag | Dth | Inj | PrD | CrD |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Totals: | 0 | 0 | 15.310M | 1.912M | |||||||
| SAC CITY MUNI ARPT | SAC CO. | IA | 06/30/2014 | 08:36 | CST-6 | Hail | 2.25 in. | 0 | 0 | 10.00K | 15.00K |
| HAMLIN | AUDUBON CO. | IA | 06/30/2014 | 08:38 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
| YETTER | CALHOUN CO. | IA | 06/30/2014 | 08:47 | CST-6 | Hail | 2.75 in. | 0 | 0 | 25.00K | 5.00K |
| ROCKWELL CITY | CALHOUN CO. | IA | 06/30/2014 | 09:03 | CST-6 | Hail | 3.00 in. | 0 | 0 | 250.00K | 0.00K |
| ROCKWELL CITY ARPT | CALHOUN CO. | IA | 06/30/2014 | 09:05 | CST-6 | Hail | 1.00 in. | 0 | 0 | 1.00K | 10.00K |
| ROCKWELL CITY | CALHOUN CO. | IA | 06/30/2014 | 09:06 | CST-6 | Hail | 2.00 in. | 0 | 0 | 20.00K | 10.00K |
| ROCKWELL CITY | CALHOUN CO. | IA | 06/30/2014 | 09:06 | CST-6 | Hail | 3.00 in. | 0 | 0 | 150.00K | 0.00K |
| ROCKWELL CITY | CALHOUN CO. | IA | 06/30/2014 | 09:06 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 10.00K |
| ROCKWELL CITY | CALHOUN CO. | IA | 06/30/2014 | 09:07 | CST-6 | Hail | 2.00 in. | 0 | 0 | 25.00K | 10.00K |
| ROCKWELL CITY | CALHOUN CO. | IA | 06/30/2014 | 09:07 | CST-6 | Hail | 4.00 in. | 0 | 0 | 500.00K | 15.00K |
| FT DODGE | WEBSTER CO. | IA | 06/30/2014 | 09:40 | CST-6 | Hail | 1.50 in. | 0 | 0 | 5.00K | 0.00K |
| FT DODGE | WEBSTER CO. | IA | 06/30/2014 | 09:44 | CST-6 | Hail | 1.50 in. | 0 | 0 | 5.00K | 10.00K |
| FT DODGE | WEBSTER CO. | IA | 06/30/2014 | 09:45 | CST-6 | Hail | 1.75 in. | 0 | 0 | 50.00K | 0.00K |
| COALVILLE | WEBSTER CO. | IA | 06/30/2014 | 09:46 | CST-6 | Hail | 1.00 in. | 0 | 0 | 2.00K | 0.00K |
| FT DODGE | WEBSTER CO. | IA | 06/30/2014 | 09:46 | CST-6 | Hail | 2.50 in. | 0 | 0 | 100.00K | 0.00K |
| FT DODGE | WEBSTER CO. | IA | 06/30/2014 | 09:47 | CST-6 | Hail | 2.00 in. | 0 | 0 | 50.00K | 0.00K |
| FT DODGE | WEBSTER CO. | IA | 06/30/2014 | 09:52 | CST-6 | Hail | 2.00 in. | 0 | 0 | 50.00K | 0.00K |
| MANSON | CALHOUN CO. | IA | 06/30/2014 | 09:59 | CST-6 | Hail | 1.50 in. | 0 | 0 | 2.00K | 0.00K |
| DENISON | CRAWFORD CO. | IA | 06/30/2014 | 10:31 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 15.00K | 0.00K |
| GRAND JCT | GREENE CO. | IA | 06/30/2014 | 10:34 | CST-6 | Hail | 2.75 in. | 0 | 0 | 100.00K | 0.00K |
| GRAND JCT | GREENE CO. | IA | 06/30/2014 | 10:34 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 5.00K |
| OGDEN | BOONE CO. | IA | 06/30/2014 | 10:39 | CST-6 | Hail | 1.50 in. | 0 | 0 | 1.00K | 10.00K |
| OGDEN | BOONE CO. | IA | 06/30/2014 | 10:41 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 5.00K |
| ODEBOLT | SAC CO. | IA | 06/30/2014 | 10:44 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 10.00K |
| ODEBOLT | SAC CO. | IA | 06/30/2014 | 10:45 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 5.00K | 0.00K |
| WOLF | BOONE CO. | IA | 06/30/2014 | 10:46 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 5.00K |
| CHURDAN | GREENE CO. | IA | 06/30/2014 | 10:47 | CST-6 | Hail | 1.75 in. | 0 | 0 | 15.00K | 0.00K |
| FARNHAMVILLE | WEBSTER CO. | IA | 06/30/2014 | 10:50 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 10.00K | 0.00K |
| FARNHAMVILLE | WEBSTER CO. | IA | 06/30/2014 | 10:51 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| MARNE | CASS CO. | IA | 06/30/2014 | 11:02 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 15.00K |
| KENFIELD | AUDUBON CO. | IA | 06/30/2014 | 11:05 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 25.00K | 0.00K |
| MARNE | CASS CO. | IA | 06/30/2014 | 11:06 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 15.00K |
| STRATFORD | HAMILTON CO. | IA | 06/30/2014 | 11:10 | CST-6 | Hail | 2.50 in. | 0 | 0 | 10.00K | 15.00K |
| STRATFORD | HAMILTON CO. | IA | 06/30/2014 | 11:11 | CST-6 | Hail | 1.25 in. | 0 | 0 | 2.00K | 5.00K |
| BOXHOLM | BOONE CO. | IA | 06/30/2014 | 11:13 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 10.00K |
| BRAYTON | AUDUBON CO. | IA | 06/30/2014 | 11:16 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 10.00K |
| BRAYTON | AUDUBON CO. | IA | 06/30/2014 | 11:18 | CST-6 | Hail | 0.75 in. | 0 | 0 | 0.00K | 0.00K |
| EXIRA | AUDUBON CO. | IA | 06/30/2014 | 11:19 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 15.00K |
| STANHOPE | HAMILTON CO. | IA | 06/30/2014 | 11:23 | CST-6 | Hail | 2.75 in. | 0 | 0 | 150.00K | 15.00K |
| ANITA | CASS CO. | IA | 06/30/2014 | 11:24 | CST-6 | Hail | 2.00 in. | 0 | 0 | 200.00K | 250.00K |
| CASEY | GUTHRIE CO. | IA | 06/30/2014 | 11:27 | CST-6 | Hail | 2.75 in. | 0 | 0 | 500.00K | 500.00K |
| STRATFORD | HAMILTON CO. | IA | 06/30/2014 | 11:28 | CST-6 | Hail | 1.75 in. | 0 | 0 | 0.00K | 10.00K |
| ADAIR | ADAIR CO. | IA | 06/30/2014 | 11:29 | CST-6 | Hail | 2.50 in. | 0 | 0 | 10.000M | 500.00K |
| BRAYTON | AUDUBON CO. | IA | 06/30/2014 | 11:29 | CST-6 | Hail | 1.50 in. | 0 | 0 | 5.00K | 15.00K |
| BOONE | BOONE CO. | IA | 06/30/2014 | 11:30 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 2.00K | 0.00K |
| JEWELL | HAMILTON CO. | IA | 06/30/2014 | 11:40 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 25.00K | 10.00K |
| ADAIR | ADAIR CO. | IA | 06/30/2014 | 11:41 | CST-6 | Hail | 1.75 in. | 0 | 0 | 25.00K | 10.00K |
| JEWELL | HAMILTON CO. | IA | 06/30/2014 | 11:41 | CST-6 | Hail | 1.25 in. | 0 | 0 | 2.00K | 0.00K |
| RANDALL | HAMILTON CO. | IA | 06/30/2014 | 11:41 | CST-6 | Thunderstorm Wind | 53 kts. EG | 0 | 0 | 10.00K | 0.00K |
| RANDALL | HAMILTON CO. | IA | 06/30/2014 | 11:42 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 10.00K | 0.00K |
| ROSSERDALE | ADAIR CO. | IA | 06/30/2014 | 11:42 | CST-6 | Tornado | EF1 | 0 | 0 | 200.00K | 25.00K |
| STORY CITY | STORY CO. | IA | 06/30/2014 | 11:42 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 25.00K | 0.00K |
| STORY CITY | STORY CO. | IA | 06/30/2014 | 11:43 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 25.00K | 0.00K |
| ELLSWORTH | HAMILTON CO. | IA | 06/30/2014 | 11:45 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 10.00K | 0.00K |
| HOWE | ADAIR CO. | IA | 06/30/2014 | 11:45 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 0.00K | 0.00K |
| ROLAND | STORY CO. | IA | 06/30/2014 | 11:47 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 50.00K | 10.00K |
| CASEY | GUTHRIE CO. | IA | 06/30/2014 | 11:50 | CST-6 | Hail | 1.50 in. | 0 | 0 | 100.00K | 25.00K |
| ELLSWORTH | HAMILTON CO. | IA | 06/30/2014 | 11:50 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 5.00K |
| ZEARING | STORY CO. | IA | 06/30/2014 | 11:57 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 50.00K | 0.00K |
| ZEARING | STORY CO. | IA | 06/30/2014 | 12:02 | CST-6 | Tornado | EF0 | 0 | 0 | 20.00K | 5.00K |
| HUBBARD | HARDIN CO. | IA | 06/30/2014 | 12:05 | CST-6 | Thunderstorm Wind | 70 kts. MG | 0 | 0 | 10.00K | 25.00K |
| ST ANTHONY | MARSHALL CO. | IA | 06/30/2014 | 12:05 | CST-6 | Tornado | EF1 | 0 | 0 | 150.00K | 20.00K |
| GRIMES | POLK CO. | IA | 06/30/2014 | 12:07 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 15.00K | 0.00K |
| HUBBARD | HARDIN CO. | IA | 06/30/2014 | 12:07 | CST-6 | Hail | 1.00 in. | 0 | 0 | 1.00K | 5.00K |
| WINTERSET | MADISON CO. | IA | 06/30/2014 | 12:07 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 5.00K | 0.00K |
| WINTERSET ARPT | MADISON CO. | IA | 06/30/2014 | 12:07 | CST-6 | Thunderstorm Wind | 70 kts. EG | 0 | 0 | 150.00K | 0.00K |
| WINTERSET ARPT | MADISON CO. | IA | 06/30/2014 | 12:13 | CST-6 | Tornado | EF1 | 0 | 0 | 10.00K | 20.00K |
| PATTERSON | MADISON CO. | IA | 06/30/2014 | 12:14 | CST-6 | Thunderstorm Wind | 74 kts. EG | 0 | 0 | 10.00K | 0.00K |
| BANGOR | MARSHALL CO. | IA | 06/30/2014 | 12:15 | CST-6 | Tornado | EF0 | 0 | 0 | 50.00K | 5.00K |
| KENNEDY | DALLAS CO. | IA | 06/30/2014 | 12:15 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 5.00K |
| PATTERSON | MADISON CO. | IA | 06/30/2014 | 12:15 | CST-6 | Tornado | EF1 | 0 | 0 | 100.00K | 5.00K |
| PATTERSON | MADISON CO. | IA | 06/30/2014 | 12:16 | CST-6 | Thunderstorm Wind | 70 kts. EG | 0 | 0 | 10.00K | 0.00K |
| URBANDALE | POLK CO. | IA | 06/30/2014 | 12:16 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 20.00K | 0.00K |
| UNION | HARDIN CO. | IA | 06/30/2014 | 12:17 | CST-6 | Tornado | EF1 | 0 | 0 | 50.00K | 5.00K |
| CUMMING | WARREN CO. | IA | 06/30/2014 | 12:18 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 20.00K | 0.00K |
| NEW PROVIDENCE | HARDIN CO. | IA | 06/30/2014 | 12:18 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 5.00K |
| NEW PROVIDENCE | HARDIN CO. | IA | 06/30/2014 | 12:18 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 0.00K | 0.00K |
| LISCOMB | MARSHALL CO. | IA | 06/30/2014 | 12:20 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 100.00K | 5.00K |
| PATTERSON | MADISON CO. | IA | 06/30/2014 | 12:20 | CST-6 | Thunderstorm Wind | 91 kts. EG | 0 | 0 | 50.00K | 0.00K |
| DES MOINES | POLK CO. | IA | 06/30/2014 | 12:22 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 25.00K | 0.00K |
| WICK | WARREN CO. | IA | 06/30/2014 | 12:22 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 25.00K | 0.00K |
| BEVINGTON | MADISON CO. | IA | 06/30/2014 | 12:23 | CST-6 | Thunderstorm Wind | 70 kts. EG | 0 | 0 | 25.00K | 0.00K |
| UNION | HARDIN CO. | IA | 06/30/2014 | 12:23 | CST-6 | Tornado | EF0 | 0 | 0 | 2.00K | 2.00K |
| BEVINGTON | WARREN CO. | IA | 06/30/2014 | 12:24 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 5.00K | 0.00K |
| UNION | HARDIN CO. | IA | 06/30/2014 | 12:25 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 75.00K | 0.00K |
| MARTENSDALE | WARREN CO. | IA | 06/30/2014 | 12:27 | CST-6 | Thunderstorm Wind | 70 kts. EG | 0 | 0 | 15.00K | 0.00K |
| MARTENSDALE | WARREN CO. | IA | 06/30/2014 | 12:27 | CST-6 | Tornado | EF1 | 0 | 0 | 1.00K | 0.00K |
| MARTENSDALE | WARREN CO. | IA | 06/30/2014 | 12:27 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 10.00K | 0.00K |
| PROLE | WARREN CO. | IA | 06/30/2014 | 12:27 | CST-6 | Thunderstorm Wind | 65 kts. EG | 0 | 0 | 50.00K | 0.00K |
| WICK | WARREN CO. | IA | 06/30/2014 | 12:27 | CST-6 | Thunderstorm Wind | 74 kts. EG | 0 | 0 | 125.00K | 0.00K |
| MARTENSDALE | WARREN CO. | IA | 06/30/2014 | 12:29 | CST-6 | Thunderstorm Wind | 74 kts. EG | 0 | 0 | 40.00K | 0.00K |
| MARTENSDALE | WARREN CO. | IA | 06/30/2014 | 12:30 | CST-6 | Thunderstorm Wind | 69 kts. EG | 0 | 0 | 125.00K | 0.00K |
| WICK | WARREN CO. | IA | 06/30/2014 | 12:30 | CST-6 | Thunderstorm Wind | 73 kts. EG | 0 | 0 | 150.00K | 0.00K |
| NORWALK | WARREN CO. | IA | 06/30/2014 | 12:33 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
| BEAMAN | GRUNDY CO. | IA | 06/30/2014 | 12:35 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 10.00K | 0.00K |
| NORWALK | WARREN CO. | IA | 06/30/2014 | 12:36 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 10.00K |
| NORWALK | WARREN CO. | IA | 06/30/2014 | 12:36 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
| DEWAR | BLACK HAWK CO. | IA | 06/30/2014 | 12:39 | CST-6 | Heavy Rain | 0 | 0 | 0.00K | 0.00K | |
| GRUNDY CENTER | GRUNDY CO. | IA | 06/30/2014 | 12:40 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 5.00K |
| SCOTCH RIDGE | WARREN CO. | IA | 06/30/2014 | 12:40 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 0.00K |
| INDIANOLA | WARREN CO. | IA | 06/30/2014 | 12:41 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 5.00K | 0.00K |
| SCOTCH RIDGE | WARREN CO. | IA | 06/30/2014 | 12:41 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 15.00K |
| INDIANOLA | WARREN CO. | IA | 06/30/2014 | 12:42 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 2.00K | 0.00K |
| BEECH | WARREN CO. | IA | 06/30/2014 | 12:45 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 10.00K |
| GRUNDY CENTER | GRUNDY CO. | IA | 06/30/2014 | 12:46 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 20.00K | 10.00K |
| ANKENY | POLK CO. | IA | 06/30/2014 | 12:47 | CST-6 | Flash Flood | 0 | 0 | 2.00K | 0.00K | |
| SUMMERSET | WARREN CO. | IA | 06/30/2014 | 12:47 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 15.00K |
| PALMYRA | WARREN CO. | IA | 06/30/2014 | 12:49 | CST-6 | Hail | 1.75 in. | 0 | 0 | 0.00K | 0.00K |
| ACKWORTH | WARREN CO. | IA | 06/30/2014 | 12:50 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 15.00K |
| MILO | WARREN CO. | IA | 06/30/2014 | 12:50 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 15.00K | 0.00K |
| ACKWORTH | WARREN CO. | IA | 06/30/2014 | 12:52 | CST-6 | Hail | 1.50 in. | 0 | 0 | 5.00K | 10.00K |
| HARTFORD | WARREN CO. | IA | 06/30/2014 | 12:52 | CST-6 | Hail | 1.50 in. | 0 | 0 | 0.00K | 0.00K |
| PALMYRA | WARREN CO. | IA | 06/30/2014 | 12:52 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 0.00K |
| SANDYVILLE | WARREN CO. | IA | 06/30/2014 | 12:52 | CST-6 | Hail | 2.50 in. | 0 | 0 | 30.00K | 20.00K |
| SANDYVILLE | WARREN CO. | IA | 06/30/2014 | 12:53 | CST-6 | Hail | 2.75 in. | 0 | 0 | 100.00K | 15.00K |
| HARTFORD | WARREN CO. | IA | 06/30/2014 | 12:54 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 0.00K |
| SANDYVILLE | WARREN CO. | IA | 06/30/2014 | 12:54 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 50.00K | 0.00K |
| SANDYVILLE | WARREN CO. | IA | 06/30/2014 | 12:55 | CST-6 | Hail | 3.50 in. | 0 | 0 | 50.00K | 5.00K |
| SANDYVILLE | WARREN CO. | IA | 06/30/2014 | 12:55 | CST-6 | Hail | 2.75 in. | 0 | 0 | 100.00K | 0.00K |
| NEWTON | JASPER CO. | IA | 06/30/2014 | 12:56 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 50.00K | 0.00K |
| SANDYVILLE | WARREN CO. | IA | 06/30/2014 | 12:56 | CST-6 | Hail | 2.75 in. | 0 | 0 | 10.00K | 5.00K |
| GRIMES | POLK CO. | IA | 06/30/2014 | 12:57 | CST-6 | Flash Flood | 0 | 0 | 25.00K | 0.00K | |
| PLEASANTVILLE | MARION CO. | IA | 06/30/2014 | 12:57 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 5.00K | 0.00K |
| RUNNELLS | POLK CO. | IA | 06/30/2014 | 12:58 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 5.00K |
| PLEASANTVILLE | MARION CO. | IA | 06/30/2014 | 13:00 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
| SPRING HILL | WARREN CO. | IA | 06/30/2014 | 13:00 | CST-6 | Hail | 1.50 in. | 0 | 0 | 5.00K | 10.00K |
| TRAER | TAMA CO. | IA | 06/30/2014 | 13:02 | CST-6 | Tornado | EF2 | 0 | 0 | 150.00K | 25.00K |
| SUMMERSET | WARREN CO. | IA | 06/30/2014 | 13:04 | CST-6 | Hail | 1.75 in. | 0 | 0 | 10.00K | 15.00K |
| PLEASANTVILLE | MARION CO. | IA | 06/30/2014 | 13:05 | CST-6 | Hail | 0.75 in. | 0 | 0 | 0.00K | 0.00K |
| PELLA | MARION CO. | IA | 06/30/2014 | 13:13 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 50.00K | 0.00K |
| CHELSEA | TAMA CO. | IA | 06/30/2014 | 13:16 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 10.00K | 25.00K |
| LA PORTE CITY ARPT | BLACK HAWK CO. | IA | 06/30/2014 | 13:16 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 5.00K | 0.00K |
| CHELSEA | TAMA CO. | IA | 06/30/2014 | 13:17 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 35.00K | 0.00K |
| DUNKERTON | BLACK HAWK CO. | IA | 06/30/2014 | 13:24 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 50.00K | 0.00K |
| LA PORTE CITY | BLACK HAWK CO. | IA | 06/30/2014 | 13:25 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 5.00K | 5.00K |
| BEAMAN THURMAN ARPT | GRUNDY CO. | IA | 06/30/2014 | 14:49 | CST-6 | Flash Flood | 0 | 0 | 100.00K | 0.00K | |
| TAMA ARPT | TAMA CO. | IA | 06/30/2014 | 16:56 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 5.00K |
| QUARRY | MARSHALL CO. | IA | 06/30/2014 | 17:14 | CST-6 | Flash Flood | 0 | 0 | 50.00K | 0.00K | |
| Totals: | 0 | 0 | 15.310M | 1.912M |
