Alert archive / Nebraska / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 21, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at May 13, 1999, 8:42 PM MDT for Chase County, Nebraska. It was in force for 48 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
- May 13, 1999, 8:42 PM MDT (02:42 UTC)
- Expired
- May 13, 1999, 9:30 PM MDT
- In force
- 48 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Chase County, NE
The radar
The Goodland radar (KGLD), 129 km from the middle of the area, began a volume at 02:43 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 13, 4:15 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.7 hours before the alert went out and 114 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1919 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 199 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLBF 140239 RRA SVRLBF NEC029-140330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 942 PM CDT (842 PM MDT) THU MAY 13 1999 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN CHASE COUNTY IN SOUTHWESTERN NEBRASKA * UNTIL 930 PM MDT (1030 PM CDT) * AT 838 PM MDT... NORTH PLATTE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN THE VICINITY OF IMPERIAL... MOVING EAST AT 25 MPH. *DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED NEAR... IMPERIAL BY 845 PM MDT THIS STORM HAS A HISTORY OF LARGE HAIL. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! SHEETS
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 6:00 PM MDT | Severe Thunderstorm Warning | LBF | Deuel | 30 min |
| May 13, 6:13 PM MDT | Severe Thunderstorm Warning | LBF | Keith | 62 min |
| May 13, 7:03 PM MDT | Severe Thunderstorm Warning | LBF | Deuel | 47 min |
| May 13, 7:17 PM MDT | Severe Thunderstorm Warning | LBF | Keith | 58 min |
| May 13, 7:38 PM MDT | Severe Thunderstorm Warning | LBF | Chase | 62 min |
| May 13, 9:06 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 64 min |
| May 13, 9:40 PM MDT | Severe Thunderstorm Warning | LBF | Hayes | 65 min |
| May 14, 12:25 AM MDT | Severe Thunderstorm Warning | LBF | Thomas | 45 min |
| May 14, 4:15 PM MDT | Severe Thunderstorm Warning | LBF | Keith | 50 min |
| May 14, 5:12 PM MDT | Severe Thunderstorm Warning | LBF | Chase | 48 min |
| May 14, 5:47 PM MDT | Severe Thunderstorm Warning | LBF | Hayes | 63 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.