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Storm Events Database
Event Details
| Event | Thunderstorm Wind |
| Magnitude | 53 kts. |
| State | IOWA |
| County/Area | GRUNDY |
| WFO | DMX |
| Begin Date | 06/15/2008 02:22:00 CST-6 |
| Begin Range | 1 |
| Begin Azimuth | SE |
| Begin Location | CONRAD |
| Begin Lat/Lon | 42.22/-92.87 |
| End Date | 06/15/2008 02:22:00 CST-6 |
| Deaths Direct/Indirect | 0/0 (fatality details below, when available...) |
| Injuries Direct/Indirect | 0/0 |
| Property Damage | 10.00K |
| Crop Damage | 0.00K |
| Episode Narrative | Strong warm air advection took place over Iowa during the overnight hours of the 14th into the morning of the 15th. A low level jet of about 30 kts set up during the late night hours. Being it was during the night, much of the convection was elevated, however the lifted index fell to the zero to -3 C. range with about 1000 J/kg of CAPE. Downdraft CAPE war around 1100 J/kg as the airmass was not saturated. CAPE in the -10 to -30 C. layer was only 200 J/kg, so in spite of the low freezing level, 10,000 to 10,500 feet, hail was not a major player. The high winds were the primary mode of severe weather. The LCL height was quite high, around 2000 meters. In spite of that, a tornado touched down briefly in Humboldt County, causing minor damage. Funnel clouds were reported in Wright County, however no touchdowns occurred. Two clusters of storms developed and moved east across northern Iowa. The two actually followed nearly the same track, giving two rounds of thunderstorms to nearly the same areas. Numerous reports of high winds were received, many in the 60 to 65 MPH range. One report from Steamboat Rock, in Hardin County, by an RWIS site. |
| Event Narrative | Nickel size hail reported as well. |
All events for this episode:
| Location | County/Zone | St. | Date | Time | T.Z. | Type | Mag | Dth | Inj | PrD | CrD |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Totals: | 0 | 0 | 174.00K | 16.00K | |||||||
| RUTHVEN | PALO ALTO CO. | IA | 06/14/2008 | 23:48 | CST-6 | Hail | 0.88 in. | 0 | 0 | 1.00K | 5.00K |
| THOR | HUMBOLDT CO. | IA | 06/15/2008 | 00:49 | CST-6 | Tornado | EF0 | 0 | 0 | 10.00K | 1.00K |
| GOLDFIELD | WRIGHT CO. | IA | 06/15/2008 | 01:00 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 15.00K | 0.00K |
| VINCENT | WEBSTER CO. | IA | 06/15/2008 | 01:02 | CST-6 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| EAGLE GROVE | WRIGHT CO. | IA | 06/15/2008 | 01:05 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 15.00K | 0.00K |
| CLARION | WRIGHT CO. | IA | 06/15/2008 | 01:15 | CST-6 | Thunderstorm Wind | 50 kts. MG | 0 | 0 | 0.00K | 0.00K |
| LIVERMORE | HUMBOLDT CO. | IA | 06/15/2008 | 01:18 | CST-6 | Hail | 1.00 in. | 0 | 0 | 3.00K | 5.00K |
| WILLIAMS | HAMILTON CO. | IA | 06/15/2008 | 01:30 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 30.00K | 0.00K |
| ALDEN | HARDIN CO. | IA | 06/15/2008 | 01:35 | CST-6 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 20.00K | 0.00K |
| IOWA FALLS | HARDIN CO. | IA | 06/15/2008 | 01:38 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 5.00K | 0.00K |
| IOWA FALLS | HARDIN CO. | IA | 06/15/2008 | 01:40 | CST-6 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| IOWA FALLS | HARDIN CO. | IA | 06/15/2008 | 01:40 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 10.00K | 0.00K |
| STEAMBOAT ROCK | HARDIN CO. | IA | 06/15/2008 | 01:57 | CST-6 | Thunderstorm Wind | 65 kts. MG | 0 | 0 | 0.00K | 0.00K |
| GRUNDY CENTER | GRUNDY CO. | IA | 06/15/2008 | 02:10 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 10.00K | 0.00K |
| CONRAD | GRUNDY CO. | IA | 06/15/2008 | 02:22 | CST-6 | Thunderstorm Wind | 53 kts. EG | 0 | 0 | 10.00K | 0.00K |
| CONRAD | GRUNDY CO. | IA | 06/15/2008 | 02:22 | CST-6 | Hail | 0.88 in. | 0 | 0 | 1.00K | 5.00K |
| GLADBROOK | TAMA CO. | IA | 06/15/2008 | 02:30 | CST-6 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| WATERLOO | BLACK HAWK CO. | IA | 06/15/2008 | 02:40 | CST-6 | Thunderstorm Wind | 57 kts. EG | 0 | 0 | 25.00K | 0.00K |
| WASHBURN | BLACK HAWK CO. | IA | 06/15/2008 | 02:45 | CST-6 | Thunderstorm Wind | 56 kts. EG | 0 | 0 | 10.00K | 0.00K |
| Totals: | 0 | 0 | 174.00K | 16.00K |
