Alert archive / Nebraska / Heat Advisories in 2016
Heat Advisory 1, NWS Cheyenne, WY
NWS Cheyenne, WY issued this heat advisory at Jul 20, 2016, 3:51 AM MDT for Box Butte County, Dawes County, Sioux County, Nebraska. It took effect at Jul 20, 2016, 12:00 PM MDT. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Jul 20, 2016, 3:51 AM MDT (09:51 UTC)
- In effect from
- Jul 20, 2016, 12:00 PM MDT
- Expired
- Jul 21, 2016, 6:00 AM MDT
- In force
- 18 hr
- Issued by
- NWS Cheyenne, WY
Counties Box Butte County, NE, Dawes County, NE, Sioux County, NE
The radar
The Rapid City radar (KUDX), 188 km from the middle of the area, began a volume at 09:50 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 (KDEN), launched 00:00Z, 9.9 hours before the alert went out and 290 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.
- Mixed-layer CAPE
- 691 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 2869 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
Nearby
Heat Advisories in Nebraska, 2016Every heat advisory in 2016
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.