The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| Event typeevent_type | Funnel Cloud |
|---|---|
| NOAA NCEI event IDncei_event_id | 239,352 |
| Episode IDepisode_id | 41,152 |
| Begin UTCbegin_utc | 2010-08-09T01:50:00+00:00 |
| End UTCend_utc | 2010-08-09T01:50:00+00:00 |
| Statestate | IOWA |
| County/zone typecz_type | C |
| County/zone namecz_name | CARROLL |
| Latitudelat | 41.920 |
| Longitudelon | -94.920 |
| End latitudeend_lat | 41.920 |
| End longitudeend_lon | -94.920 |
| Deaths directdeaths_direct | 0 |
| Deaths indirectdeaths_indirect | 0 |
| Injuries directinjuries_direct | 0 |
| Injuries indirectinjuries_indirect | 0 |
| Damage propertydamage_property | 0.00K |
| Damage cropsdamage_crops | 0.00K |
| Weather forecast office sourcewfo_source | Trained Spotter |
| Episode narrativeepisode_narrative | A very unstable airmass was in place over Iowa. Afternoon temperatures warmed into the upper 80s to mid 90s, with dewpoint readings in the upper 70s to low 80s. A weak boundary extended out of eastern Nebraska across northern Iowa. This boundary helped to focus moisture. At the same time, a negatively tilted shortwave lifted northeast out of the Rockies into Nebraska during the afternoon and early evening. The lifted index fell to -10 to -14 C by evening with CAPE rising to 5000-7000 J/kg in the very moist airmass. The freezing level was very high, between 16,000 and 17,000 feet. As a result, there was little in the way of hail. The downdraft CAPE was quite high, 800 to 1400 J/kg. Thunderstorms formed in northeast Nebraska. They rapidly formed into an upscale MCS, and eventually a full-fledged MCC. Precipitable water values were extremely high, in the 2.5 to 2.75 inch range. The primary mode of severe weather with the system was in the form of high wind. Wind gusts of 60 to 70 MPH caused sporadic damage across western into central Iowa with tree damage, as well as damage to outbuildings. The storms produced one funnel cloud in Carroll County. The high precipitable water values led to very heavy rainfall with widespread flash flooding. A swath of 2 to 5 inch rainfall extended from west central, through central, into parts of southeast Iowa. There were numerous reports of a foot or more of flowing water over streets. Following the flash flooding, water remained standing on many roads due to the soils across the state being nearly saturated. This resulted in some road closures. The Des Moines metropolitan area was hard hit as 3 to 5 inches of rain fell in 4 hours or less. This caused extensive flooding in the city. Some evacuations took place. One was at a trailer court along Four Mile Creek on the east side of Des Moines. Numerous roads were closed on the west side as well as Walnut Creek jumped its banks. In fact, the creek set an all-time record high stage. Fast rising waters of North Walnut Creek flooded four basement apartment units in Clive with water rescues taking place. Lightning struck a house in Adel, setting it on fire. The family was asleep at the time and were rescued by the fire department after the house had been on fire for 45 minutes. Damage to the house was around $1,000,000 as it was a total loss, burned to the ground. In Black Hawk County, lightning struck the water treatment plant in Cedar Falls. Power was knocked out, resulting in the discharge of 750,000 gallons of sewage into the Cedar River. Lightning struck the historical depot in Carroll, now the Chamber of Commerce, and caused minor damage to the roof. It also knocked out telephone service to 3 adjacent buildings. |
| Event narrativeevent_narrative | Brief funnel clouds forming and dissipating. |
| Yearyear | 2,010 |
Provenance
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