Alert archive / Nebraska / Flash Flood Watches in 2010

Flash Flood Watch 2, NWS North Platte, NE

June 7, 201013 counties in Nebraska

NWS North Platte, NE issued this flash flood watch at Jun 7, 2010, 3:40 PM CDT for 13 counties in Nebraska. It took effect at Jun 7, 2010, 4:00 PM CDT. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Jun 7, 2010, 3:40 PM CDT (20:40 UTC)
In effect from: Jun 7, 2010, 4:00 PM CDT
Expired: Jun 8, 2010, 6:34 AM CDT
In force: 15 hr
Issued by: NWS North Platte, NE
Flood severity: None

Counties Boyd County, NE, Brown County, NE, Chase County, NE, Cherry County, NE, Deuel County, NE, Frontier County, NE, Hayes County, NE, Holt County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Perkins County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 35 km from the middle of the area, began a volume at 20:44 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, 8.7 hours before the alert went out and 299 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: 1166 J/kg
Mixed-layer CIN: -339 J/kg
Mixed-layer LCL: 1244 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 132 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at Jun 7, 3:29 PM CDT, 11 minutes earlier.

Area forecast discussion, Jun 7, 3:29 PM CDT, 11 minutes before

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Hazardous weather outlook, Jun 7, 3:12 PM CDT, 28 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 6, 7:01 PM CDT	Severe Thunderstorm Warning	LBF	Hayes	44 min
Jun 6, 7:22 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Garden	38 min
Jun 6, 7:32 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, McPherson	43 min
Jun 6, 7:38 PM CDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	52 min
Jun 6, 8:03 PM CDT	Tornado Warning	LBF	Arthur, Keith, Lincoln	27 min
Jun 6, 8:08 PM CDT	Tornado Warning	LBF	Keith, Lincoln, McPherson	37 min
Jun 6, 8:18 PM CDT	Severe Thunderstorm Warning	LBF	Deuel, Keith	42 min
Jun 6, 8:32 PM CDT	Tornado Warning	LBF	Keith, Perkins	28 min
Jun 6, 8:35 PM CDT	Severe Thunderstorm Warning	LBF	Perkins	40 min
Jun 6, 8:44 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln, McPherson	46 min
Jun 6, 8:59 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, Perkins	46 min
Jun 6, 9:09 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	51 min
Jun 6, 9:28 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	32 min
Jun 6, 9:29 PM CDT	Severe Thunderstorm Warning	LBF	Hayes, Lincoln, Perkins	46 min
Jun 6, 9:33 PM CDT	Tornado Warning	LBF	Chase, Hayes	27 min
Jun 6, 9:41 PM CDT	Tornado Warning	LBF	Hayes, Lincoln	34 min
Jun 6, 10:01 PM CDT	Severe Thunderstorm Warning	LBF	Hayes	29 min

Nearby

Flash Flood Watches in Nebraska, 2010 Every flash flood watch 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.