Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 27, NWS Hastings, NE
NWS Hastings, NE issued this severe thunderstorm warning at Jul 6, 1987, 11:21 PM CDT for Buffalo County, Sherman County, Valley County, Nebraska. It was in force for 69 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 6, 1987, 11:21 PM CDT (04:21 UTC)
- Expired
- Jul 7, 1987, 12:30 AM CDT
- In force
- 69 min
- Issued by
- NWS Hastings, NE
- Area
- Whole counties
Counties Buffalo County, NE, Sherman County, NE, Valley County, NE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 7, 12:40 AM CDT | Tornado F2 | Valley, NE |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.4 hours before the alert went out and 133 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
- 4064 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1720 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 18.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 6, 7:36 PM CDT, 3 hours 45 minutes before
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</html>Special weather statement, Jul 6, 8:38 PM CDT, 2 hours 43 minutes before
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</html>Special weather statement, Jul 6, 9:38 PM CDT, 1 hour 43 minutes before
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</html>Special weather statement, Jul 6, 10:45 PM CDT, 36 minutes before
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</html>Nearby
Severe Thunderstorm Warnings in Nebraska, 1987Every severe thunderstorm warning in 1987
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.