Alert archive / Nebraska / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 145, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jul 1, 1999, 11:05 PM MDT for Cherry County, Nebraska. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 1, 1999, 11:05 PM MDT (05:05 UTC)
- Expired
- Jul 1, 1999, 11:40 PM MDT
- In force
- 35 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Cherry County, NE
The radar
The North Platte radar (KLNX), 79 km from the middle of the area, began a volume at 05:09 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
Aberdeen, SD (KABR), launched 00:00Z, 5.1 hours before the alert went out and 341 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
- 34 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1508 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
NWS North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 1, 7:31 PM MDT, 3 hours 34 minutes earlier.
Area forecast discussion, Jul 1, 7:31 PM MDT, 3 hours 34 minutes before
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</html>The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 11:49 PM MDT | Severe Thunderstorm Warning | LBF | Keya Paha | 51 min |
| Jul 2, 12:21 AM MDT | Severe Thunderstorm Warning | LBF | Keya Paha | 49 min |
| Jul 2, 12:34 AM MDT | Severe Thunderstorm Warning | LBF | Rock | 36 min |
| Jul 2, 12:49 AM MDT | Severe Thunderstorm Warning | LBF | Holt | 61 min |
| Jul 2, 2:04 AM MDT | Severe Thunderstorm Warning | LBF | Boyd | 66 min |
| Jul 2, 3:12 AM MDT | Severe Thunderstorm Warning | LBF | Boyd | 48 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.