Alert archive / Nebraska / Areal Flood Warnings in 2010

Areal Flood Warning 13, NWS North Platte, NE

June 21, 2010Chase County, Hayes County, Nebraska

NWS North Platte, NE issued this areal flood warning at Jun 21, 2010, 7:14 AM MDT for Chase County, Hayes County, Nebraska. It was in force for 18 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: Jun 21, 2010, 7:14 AM MDT (13:14 UTC)
Expired: Jun 22, 2010, 1:00 AM MDT
In force: 18 hr
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Flood severity: None

Counties Chase County, NE, Hayes County, NE

The radar

The Goodland radar (KGLD), 132 km from the middle of the area, began a volume at 13:15 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

Denver, CO (KDNR), launched 12:00Z, 1.2 hours before the alert went out and 173 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: 2927 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 561 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: -0.2
Supercell composite: -1.2

Open this sounding in Storm Lab

What forecasters said that day

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

NWS North Platte, NE wrote its last area forecast discussion before this areal flood warning went out at Jun 21, 3:28 AM MDT, 3 hours 46 minutes earlier.

Area forecast discussion, Jun 21, 3:28 AM MDT, 3 hours 46 minutes before

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Hazardous weather outlook, Jun 21, 4:42 AM MDT, 2 hours 32 minutes before

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In the hours before

Local storm report, Jun 21, 6:30 AM MDT, 44 minutes before

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Local storm report, Jun 21, 7:09 AM MDT, 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 7:07 PM MDT	Severe Thunderstorm Warning	LBF	Wheeler	24 min
Jun 20, 10:09 PM MDT	Severe Thunderstorm Warning	LBF	Holt	21 min
Jun 20, 10:47 PM MDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	43 min
Jun 20, 11:14 PM MDT	Severe Thunderstorm Warning	LBF	Chase	46 min
Jun 20, 11:28 PM MDT	Severe Thunderstorm Warning	LBF	Hayes	47 min
Jun 20, 11:53 PM MDT	Flash Flood Warning	LBF	Chase	3 hr
Jun 20, 11:56 PM MDT	Flash Flood Warning	LBF	Hayes	3 hr
Jun 20, 11:58 PM MDT	Severe Thunderstorm Warning	LBF	Chase	47 min
Jun 21, 12:09 AM MDT	Severe Thunderstorm Warning	LBF	Custer	51 min
Jun 21, 12:12 AM MDT	Severe Thunderstorm Warning	LBF	Hayes	48 min
Jun 21, 12:43 AM MDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes, Lincoln	47 min
Jun 21, 1:36 AM MDT	Flash Flood Warning	LBF	Frontier, Lincoln	4 hr
Jun 21, 2:38 AM MDT	Flash Flood Warning	LBF	Custer	4 hr
Jun 21, 2:52 AM MDT	Flash Flood Warning	LBF	Chase, Hayes, Lincoln	4 hr
Jun 21, 7:55 AM MDT	River Flood Warning	LBF	Lincoln	5 days

Nearby

Areal Flood Warnings in Nebraska, 2010 Every areal 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.