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 | 369,195 |
| Episode IDepisode_id | 61,679 |
| Begin UTCbegin_utc | 2012-05-06T13:00:00+00:00 |
| End UTCend_utc | 2012-05-06T13:00:00+00:00 |
| Statestate | IOWA |
| County/zone typecz_type | C |
| County/zone namecz_name | AUDUBON |
| Latitudelat | 41.700 |
| Longitudelon | -95 |
| End latitudeend_lat | 41.700 |
| End longitudeend_lon | -95 |
| 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 cold front stretched from western Minnesota, across southeast South Dakota, into Nebraska during the evening of the 5th. The front moved slowly southeast into Iowa during the overnight hours. The airmass was very unstable in advance of the front with lifted indices of -3 to -6 and elevated CAPE of 2000 to 3000 J/kg. A strong low level jet of 50 kts developed by the late evening hours with a broad area of deep moisture convergence producing precipitable water values of around 1.5 inches. Downdraft CAPE was high, in the 600 to 1300 J/kg range. Although the freezing level was around 14,500 feet, plenty of CAPE was available in the -10 to -30 C layer of the atmosphere with 500 to 700 J/kg present. A strong line of thunderstorms formed along the cold frontal boundary. The atmosphere was highly sheared as the storms progressed out of Nebraska and South Dakota with 45 to 55 kts of effective shear. The LCL level just in advance of the line was between 750 and 1000 meters. A line of thunderstorms moved across the state during the night. There were two main clusters of storms. A MCC moved across southern Minnesota, while a MCS pushed into Iowa during the late night hours. One portion of the Iowa segment of the line became severe as the line interacted with a southward progressing outflow boundary from the Minnesota MCC. Winds gusted to 69 MPH in Atlantic with the passage of the storms. High winds progressed east-northeast with 65 MPH winds in Adair County west of Greenfield, and 70 MPH winds in Warren County south of the Des Moines International Airport. The strongest measured wind gusts were in the central Iowa area. A wind gust of 77 MPH was recorded east of Greenfield in Adair County. In Dallas County, a wind gust of 71 MPH recorded east of Dallas Center. There were several reports of one quarter to one half inch diameter hail, however the largest hail was about nickel size. The storms produced very heavy rainfall with amounts of one half to one and one half inches being reported in less than an hour. Local street flooding occurred, but no major flooding was reported. The heaviest rainfall occurred in Audubon County. Rainfall of 2.5 to 4.5 inches occurred with flash flooding reported west of Audubon. The bridge on County Road N14 was under water. About one half mile of the highway was under water. Most of the damage was to roads that required regrading. Logs were left on a bridge from the overflow of Indian Creek. |
| Event narrativeevent_narrative | Rainfall of 4.5 inches recorded. |
| Yearyear | 2,012 |
Provenance
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