Alert archive / Nebraska / Heat Advisories in 2011

Heat Advisory 4, NWS Hastings, NE

July 22, 201122 counties in Nebraska

NWS Hastings, NE issued this heat advisory at Jul 22, 2011, 4:03 AM CDT for 22 counties in Nebraska. It took effect at Jul 22, 2011, 12:00 PM CDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Jul 22, 2011, 4:03 AM CDT (09:03 UTC)
In effect from: Jul 22, 2011, 12:00 PM CDT
Expired: Jul 22, 2011, 8:37 PM CDT
In force: 9 hr
Issued by: NWS Hastings, NE

All 22 counties

Adams County, NE, Buffalo County, NE, Clay County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Phelps County, NE, Polk County, NE, Sherman County, NE, Valley County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 56 km from the middle of the area, began a volume at 09:04 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

Omaha, NE (KOAX), launched 00:00Z, 9.1 hours before the alert went out and 201 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: 2480 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1131 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 460 m²/s²
Significant tornado parameter: 3.8
Supercell composite: 43.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heat advisory 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 heat advisory went out at Jul 22, 12:58 AM CDT, 3 hours 5 minutes earlier.

Area forecast discussion, Jul 22, 12:58 AM CDT, 3 hours 5 minutes before

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Hazardous weather outlook, Jul 22, 12:17 AM CDT, 3 hours 46 minutes before

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In the hours before

Local storm report, Jul 21, 11:22 PM CDT, 4 hours 41 minutes before

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Special weather statement, Jul 22, 12:34 AM CDT, 3 hours 29 minutes before

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Local storm report, Jul 22, 1:09 AM CDT, 2 hours 54 minutes before

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Local storm report, Jul 22, 1:13 AM CDT, 2 hours 50 minutes before

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Local storm report, Jul 22, 1:14 AM CDT, 2 hours 49 minutes before

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Special weather statement, Jul 22, 1:18 AM CDT, 2 hours 45 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, 9:03 PM CDT	Special Weather Statement	GID	Webster	42 min
Jul 21, 9:26 PM CDT	Severe Thunderstorm Warning	GID	Nuckolls, Webster	49 min
Jul 21, 9:39 PM CDT	Severe Thunderstorm Warning	GID	Nuckolls, Thayer	51 min
Jul 21, 10:24 PM CDT	Severe Thunderstorm Warning	GID	Nuckolls, Thayer	27 min
Jul 21, 10:45 PM CDT	Areal Flood Warning	GID	Nuckolls	6 hr
Jul 22, 12:34 AM CDT	Special Weather Statement	GID	Webster	41 min
Jul 22, 1:18 AM CDT	Special Weather Statement	GID	Webster	27 min
Jul 22, 4:03 AM CDT	Excessive Heat Warning	GID	Nuckolls, Thayer	41 hr
Jul 21, 10:07 PM CDT	Severe Thunderstorm Warning	GID	Jewell	38 min

Nearby

Heat Advisories in Nebraska, 2011 Every heat advisory 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.