Alert archive / Iowa / Flash Flood Warnings in 1996

Flash Flood Warning 23, NWS Omaha, NE

July 17, 1996Monona County, Iowa

NWS Omaha, NE issued this flash flood warning at Jul 17, 1996, 12:19 AM CDT for Monona County, Iowa. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 17, 1996, 12:19 AM CDT (05:19 UTC)
Expired: Jul 17, 1996, 3:15 AM CDT
In force: 3 hr
Issued by: NWS Omaha, NE
Area: Whole counties

County Monona County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 5.3 hours before the alert went out and 88 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1921 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 979 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 214 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 16, 10:08 PM CDT, 2 hours 11 minutes before

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The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 16, 7:12 PM CDT	Tornado Warning	OAX	Butler	48 min
Jul 16, 7:30 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Platte	45 min
Jul 16, 7:36 PM CDT	Flash Flood Warning	OAX	Platte	2 hr
Jul 16, 8:00 PM CDT	Tornado Warning	OAX	Butler	45 min
Jul 16, 8:13 PM CDT	Severe Thunderstorm Warning	OAX	Saunders	47 min
Jul 16, 8:32 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Thurston	43 min
Jul 16, 8:55 PM CDT	Tornado Warning	OAX	Saunders	50 min
Jul 16, 9:10 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	50 min
Jul 16, 9:45 PM CDT	Flash Flood Warning	OAX	Cedar, Knox	3 hr
Jul 16, 10:08 PM CDT	Flash Flood Warning	OAX	Cedar, Knox	52 min
Jul 16, 10:08 PM CDT	Severe Thunderstorm Warning	OAX	Cedar, Knox	52 min
Jul 16, 11:19 PM CDT	Flash Flood Warning	OAX	Cedar	56 min
Jul 16, 11:19 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	56 min
Jul 17, 12:33 AM CDT	Flash Flood Warning	OAX	Cedar	3 hr
Jul 16, 7:40 PM CDT	Severe Thunderstorm Warning	OAX	Monona	50 min
Jul 16, 10:43 PM CDT	Severe Thunderstorm Warning	OAX	Shelby	47 min
Jul 16, 11:47 PM CDT	Severe Thunderstorm Warning	OAX	Monona	58 min
Jul 17, 2:23 AM CDT	Flash Flood Warning	OAX	Monona	5 hr
Jul 17, 3:35 AM CDT	Flash Flood Warning	OAX	Harrison, Shelby	6 hr

Nearby

Flash Flood Warnings in Iowa, 1996 Every flash flood warning in 1996

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.