The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| Event typeevent_type | Heavy Rain |
|---|---|
| NOAA NCEI event IDncei_event_id | 389,952 |
| Episode IDepisode_id | 65,028 |
| Begin UTCbegin_utc | 2012-08-08T20:53:00+00:00 |
| End UTCend_utc | 2012-08-08T21:53:00+00:00 |
| Statestate | IOWA |
| County/zone typecz_type | C |
| County/zone namecz_name | POLK |
| Latitudelat | 41.610 |
| Longitudelon | -93.710 |
| End latitudeend_lat | 41.610 |
| End longitudeend_lon | -93.710 |
| 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 | NWS Employee |
| Episode narrativeepisode_narrative | A cold front pushed into northwest Iowa during the afternoon of the 8th. Temperatures warmed in to the upper 80s to low 90s, with dewpoint readings in the mid to upper 60s during the afternoon. CAPE rose to 2000 to 2500 J/kg, though the atmosphere was weakly sheared with 25 kts of shear available. Downdraft CAPE was significant with around 1000 J/kg available. The lifted index fell to between -6 to -9 C as moisture increased. By late afternoon the precipitable water value was around 1.6 inches. The freezing level was around 13,500 feet, which was not conducive to hail given the weakly sheared environment. CAPE in the -10 to -30 C layer of the atmosphere was in the 500 to 700 J/kg range. An area of thunderstorms formed over western Iowa and advanced east across the state. An area from west central into central Iowa intensified. Hail up to half dollar size was reported at several locations. Part of the line began to bow out and was able to take advantage of the DCAPE. Winds of 60 to 70 MPH moved through central Iowa, including the Des Moines metro area. Winds near 75 MPH swept into the west side of the Des Moines Metro area. The winds lasted from 10 to 20 minutes. Hail falling at the time caused damage to houses as the hail was driven through the siding of some of them. There were numerous reports of trees down and power outages. At one point 7,000 to 10,000 customers were out of service. Heavy rainfall of nearly 2 inches in under an hour was reported around Des Moines. The heavy rain caused significant street flooding and caused many motorists to stall out. Thunderstorms formed over northern Iowa during the late afternoon in response to an upper level system. The storms produced wind gusts as high 66 MPH in the Mason City area. Quarter size hail was reported from one of the stronger cells in Franklin County. |
| Event narrativeevent_narrative | Measured 1.69 inches of rain in less than an hour. |
| Yearyear | 2,012 |
Provenance
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