Alert archive / Nebraska / Flash Flood Warnings in 2019
Flash Flood Warning 21, NWS North Platte, NE
NWS North Platte, NE issued this flash flood warning at Aug 4, 2019, 7:24 PM CDT for Brown County, Cherry County, Keya Paha County, Nebraska. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 4, 2019, 7:24 PM CDT (00:24 UTC)
- Expired
- Aug 4, 2019, 10:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Flood severity
- None
Counties Brown County, NE, Cherry County, NE, Keya Paha County, NE
The radar
The North Platte radar (KLNX), 102 km from the middle of the area, began a volume at 00:28 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 4, 9:00 PM CDT | FLASH FLOOD | Valentine, NE | MULTIPLE FLOODED STREETS ACROSS TOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.4 hours before the alert went out and 190 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
- 641 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 2202 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted.
068 WGUS53 KLBF 050024 FFWLBF NEC017-031-103-050330- /O.NEW.KLBF.FF.W.0021.190805T0024Z-190805T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service North Platte NE 724 PM CDT Sun Aug 4 2019 The National Weather Service in North Platte has issued a * Flash Flood Warning for... Northeastern Cherry County in north central Nebraska... Northern Brown County in north central Nebraska... Southwestern Keya Paha County in north central Nebraska... * Until 1030 PM CDT. * At 723 PM CDT, the public reported thunderstorms producing heavy rain across the warned area. Up to two inches of rain have already fallen in the Valentine area. Flash flooding is expected to begin shortly. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. This includes the following highways... Highway 183 between mile markers 195 and 127. Highway 20 between mile markers 190 and 222. Highway 97 between mile markers 131 and 141. Highway 83 between mile markers 198 and 220. Highway 12 between mile markers 1 and 16, and between mile markers 21 and 51. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. && LAT...LON 4287 9967 4255 9969 4271 10074 4298 10065 $$ Buttler
2 follow-up statements
687 WGUS73 KLBF 050207 FFSLBF Flash Flood Statement National Weather Service North Platte NE 907 PM CDT Sun Aug 4 2019 NEC017-031-103-050330- /O.CON.KLBF.FF.W.0021.000000T0000Z-190805T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cherry NE-Brown NE-Keya Paha NE- 907 PM CDT Sun Aug 4 2019 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR NORTHEASTERN CHERRY...NORTHERN BROWN AND SOUTHWESTERN KEYA PAHA COUNTIES... At 906 PM CDT, the public reported water over some streets in Valentine. Up to two inches of rain have already fallen. Flash flooding is already occurring. Some locations that will experience flooding include... Valentine, Springview, Norden, Wood Lake, Bobcat State Wildlife Management Area, Meadville, North River Trail, Sparks, Keller Park State Recreation Area, Thomas Creek State Wildlife Management Area, Smith Falls State Park, Schlagel Creek State Wildlife Management Area, Pine Glen State Wildlife Refuge, Antelope Peak and Highway 97 crossing the Niobrara River. This includes the following highways... Highway 183 between mile markers 195 and 127. Highway 20 between mile markers 190 and 222. Highway 97 between mile markers 131 and 141. Highway 83 between mile markers 198 and 220. Highway 12 between mile markers 1 and 16, and between mile markers 21 and 51. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. && LAT...LON 4287 9967 4255 9969 4271 10074 4298 10065 $$ Buttler
039 WGUS73 KLBF 050326 FFSLBF Flash Flood Statement National Weather Service North Platte NE 1026 PM CDT Sun Aug 4 2019 NEC017-031-103-050332- /O.EXP.KLBF.FF.W.0021.000000T0000Z-190805T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cherry NE-Brown NE-Keya Paha NE- 1026 PM CDT Sun Aug 4 2019 ...THE FLASH FLOOD WARNING FOR NORTHEASTERN CHERRY...NORTHERN BROWN AND SOUTHWESTERN KEYA PAHA COUNTIES WILL EXPIRE AT 1030 PM CDT... Flood waters have receded. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 4287 9967 4255 9969 4271 10074 4298 10065 $$ Buttler
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 7:37 PM CDT | Special Weather Statement | LBF | Thomas | 53 min |
| Aug 4, 7:42 PM CDT | Special Weather Statement | LBF | Keya Paha | 33 min |
| Aug 4, 7:58 PM CDT | Special Weather Statement | LBF | Arthur | 47 min |
| Aug 4, 8:15 PM CDT | Special Weather Statement | LBF | Logan | 30 min |
| Aug 4, 8:25 PM CDT | Special Weather Statement | LBF | Keith | 50 min |
| Aug 4, 8:38 PM CDT | Severe Thunderstorm Warning | LBF | Keith, Lincoln, Perkins | 37 min |
| Aug 4, 9:17 PM CDT | Severe Thunderstorm Warning | LBF | Arthur, Keith, Lincoln, McPherson | 24 min |
| Aug 5, 3:32 AM CDT | Special Weather Statement | LBF | Keith | 28 min |
| Aug 5, 3:43 AM CDT | Special Weather Statement | LBF | Perkins | 32 min |
| Aug 5, 4:02 AM CDT | Special Weather Statement | LBF | Keith | 43 min |
| Aug 5, 6:48 PM CDT | Special Weather Statement | LBF | McPherson | 42 min |
Nearby
Flash Flood Warnings in Nebraska, 2019Every flash flood warning in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.