Alert archive / Nebraska / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 239, NWS Goodland, KS
NWS Goodland, KS issued this severe thunderstorm warning at Aug 17, 1999, 7:17 PM CDT for Hitchcock County, Nebraska. It was in force for 48 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
- Aug 17, 1999, 7:17 PM CDT (00:17 UTC)
- Expired
- Aug 17, 1999, 8:05 PM CDT
- In force
- 48 min
- Issued by
- NWS Goodland, KS
- Area
- Whole counties
County Hitchcock County, NE
The radar
The Goodland radar (KGLD), 106 km from the middle of the area, began a volume at 00:17 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 17, 7:20 PM CDT | Hail 1.75 | Stratton, 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 17, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.3 hours before the alert went out and 112 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
- 2968 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1216 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.6
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 7:35 PM CDT | Severe Thunderstorm Warning | GLD | Cheyenne | 50 min |
| Aug 17, 8:43 PM CDT | Severe Thunderstorm Warning | GLD | Sherman | 47 min |
| Aug 17, 8:52 PM CDT | Severe Thunderstorm Warning | GLD | Cheyenne | 48 min |
| Aug 17, 9:25 PM CDT | Severe Thunderstorm Warning | GLD | Rawlins | 50 min |
| Aug 17, 9:33 PM CDT | Severe Thunderstorm Warning | GLD | Thomas | 47 min |
| Aug 17, 10:20 PM CDT | Severe Thunderstorm Warning | GLD | Thomas | 35 min |
| Aug 17, 8:08 PM CDT | Severe Thunderstorm Warning | GLD | Kit Carson | 42 min |
| Aug 17, 7:03 PM CDT | Severe Thunderstorm Warning | GLD | Dundy | 62 min |
| Aug 17, 8:11 PM CDT | Severe Thunderstorm Warning | GLD | Dundy | 49 min |
| Aug 17, 8:30 PM CDT | Severe Thunderstorm Warning | GLD | Hitchcock | 45 min |
| Aug 17, 9:09 PM CDT | Severe Thunderstorm Warning | GLD | Red Willow | 46 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1999Every severe thunderstorm warning in 1999
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; radar from the NEXRAD Level II archive.