Alert archive / Nebraska / Severe Thunderstorm Watches in 1999
Severe Thunderstorm Watch 511
The Storm Prediction Center issued this severe thunderstorm watch at Jul 2, 1999, 3:00 PM MDT for 5 counties in Colorado; 12 counties in Kansas; 19 counties in Nebraska. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 1999, 3:00 PM MDT (21:00 UTC)
- Expired
- Jul 2, 1999, 9:00 PM MDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 36 counties
Cheyenne County, CO, Kit Carson County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Logan County, KS, Norton County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Arthur County, NE, Chase County, NE, Custer County, NE, Dawson County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Furnas County, NE, Garden County, NE, Gosper County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE
The radar
The Goodland radar (KGLD), 54 km from the middle of the area, began a volume at 21:03 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.
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 3:56 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 64 min |
| Jul 2, 4:24 PM MDT | Severe Thunderstorm Warning | GLD | Sherman | 66 min |
| Jul 2, 4:36 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 64 min |
| Jul 2, 5:19 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 61 min |
| Jul 2, 5:29 PM MDT | Severe Thunderstorm Warning | GLD | Sherman | 31 min |
| Jul 2, 5:59 PM MDT | Tornado Warning | GLD | Rawlins | 46 min |
| Jul 2, 6:06 PM MDT | Severe Thunderstorm Warning | LBF | Chase, Hayes | 64 min |
| Jul 2, 6:09 PM MDT | Tornado Warning | GLD | Yuma | 36 min |
| Jul 2, 6:27 PM MDT | Severe Thunderstorm Warning | GLD | Dundy | 63 min |
| Jul 2, 6:28 PM MDT | Severe Thunderstorm Warning | LBF | Chase | 62 min |
| Jul 2, 6:46 PM MDT | Severe Thunderstorm Warning | LBF | Perkins | 59 min |
| Jul 2, 7:00 PM MDT | Tornado Warning | LBF | Perkins | 50 min |
| Jul 2, 7:09 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 61 min |
| Jul 2, 7:43 PM MDT | Tornado Warning | LBF | Keith, Lincoln, McPherson | 47 min |
| Jul 2, 8:15 PM MDT | Severe Thunderstorm Warning | LBF | Custer, Lincoln, Logan | 60 min |
| Jul 2, 8:29 PM MDT | Severe Thunderstorm Warning | LBF | Hooker, McPherson | 61 min |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.0 hours before the alert went out and 163 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
- 2748 J/kg
- Mixed-layer CIN
- -307 J/kg
- Mixed-layer LCL
- 586 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 320 m²/s²
- 0-3 km storm-relative helicity
- 403 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.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 2:00 PM MDT | Severe Thunderstorm Watch | SPC | Baca, Bent, Kiowa, Prowers | 5 hr |
| Jul 2, 12:30 AM MDT | Severe Thunderstorm Watch | SPC | Boyd, Cedar, Dakota, Dixon, Holt, Keya Paha and 4 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 1999Severe Thunderstorm Watches in Kansas, 1999Severe Thunderstorm Watches in Colorado, 1999Every severe thunderstorm watch 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.