Alert archive / Nebraska / Areal Flood Warnings in 2011

Areal Flood Warning 10, NWS North Platte, NE

June 27, 2011Holt County, Nebraska

NWS North Platte, NE issued this areal flood warning at Jun 27, 2011, 6:58 AM CDT for Holt County, Nebraska. It was in force for 8 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 27, 2011, 6:58 AM CDT (11:58 UTC)
Expired: Jun 27, 2011, 3:00 PM CDT
In force: 8 hr
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Flood severity: None

County Holt County, NE

The radar

The North Platte radar (KLNX), 158 km from the middle of the area, began a volume at 11:57 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 12.0 hours before the alert went out and 211 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: 2662 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 690 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.7

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 27, 3:40 AM CDT, 3 hours 18 minutes earlier.

Area forecast discussion, Jun 27, 3:40 AM CDT, 3 hours 18 minutes before

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Hazardous weather outlook, Jun 27, 5:17 AM CDT, 1 hour 41 minutes before

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In the hours before

Special weather statement, Jun 27, 1:42 AM CDT, 5 hours 16 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 26, 7:13 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	47 min
Jun 26, 7:26 PM CDT	Severe Thunderstorm Warning	LBF	Sheridan	34 min
Jun 26, 7:53 PM CDT	Severe Thunderstorm Warning	LBF	Sheridan	37 min
Jun 26, 8:00 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Grant, Hooker	45 min
Jun 26, 8:37 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Garden, Grant, Sheridan	38 min
Jun 26, 8:44 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	46 min
Jun 26, 9:15 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Grant, Hooker	15 min
Jun 26, 9:27 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Cherry, Grant, Hooker	33 min
Jun 26, 9:58 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Blaine, Cherry, Hooker, Logan, McPherson and 1 more	47 min
Jun 26, 10:45 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Loup	30 min
Jun 26, 11:14 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Garfield, Loup	31 min
Jun 26, 11:34 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	41 min
Jun 26, 11:43 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Loup, Wheeler	15 min
Jun 27, 12:50 AM CDT	Severe Thunderstorm Warning	LBF	Lincoln	40 min
Jun 27, 4:54 PM CDT	Areal Flood Warning	LBF	Holt	72 hr

Nearby

Areal Flood Warnings in Nebraska, 2011 Every areal flood warning in 2011

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.