Alert archive / Kansas / Flash Flood Warnings in 2010

Flash Flood Warning 20, NWS Hastings, NE

July 21, 2010Mitchell County, Kansas

NWS Hastings, NE issued this flash flood warning at Jul 21, 2010, 5:43 AM CDT for Mitchell County, Kansas. It was in force for 4 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 21, 2010, 5:43 AM CDT (10:43 UTC)
Expired: Jul 21, 2010, 10:03 AM CDT
In force: 4 hr
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Flood severity: None

County Mitchell County, KS

The radar

The Grand Island radar (KUEX), 105 km from the middle of the area, began a volume at 10:47 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 10.7 hours before the alert went out and 226 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: 1632 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 965 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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.

NWS Hastings, NE wrote its last area forecast discussion before this flash flood warning went out at Jul 21, 4:56 AM CDT, 47 minutes earlier.

Area forecast discussion, Jul 21, 4:56 AM CDT, 47 minutes before

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Hazardous weather outlook, Jul 21, 4:17 AM CDT, 1 hour 26 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 3:53 AM CDT	Flash Flood Warning	GID	Jewell, Mitchell, Osborne, Smith	6 hr
Jul 21, 7:59 AM CDT	River Flood Warning	GID	Osborne, Smith	33 hr
Jul 21, 9:34 AM CDT	Areal Flood Warning	GID	Jewell, Mitchell, Osborne, Smith	32 hr
Jul 21, 2:08 PM CDT	River Flood Warning	GID	Mitchell	18 hr

Nearby

Flash Flood Warnings in Kansas, 2010 Every flash flood warning in 2010

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; radar from the NEXRAD Level II archive.