Alert archive / Nebraska / Flash Flood Warnings in 2011
Flash Flood Warning 12, NWS North Platte, NE
NWS North Platte, NE issued this flash flood warning at Jul 8, 2011, 9:44 PM CDT for Logan County, McPherson County, Thomas County, Nebraska. It was in force for 2 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 8, 2011, 9:44 PM CDT (02:44 UTC)
- Expired
- Jul 8, 2011, 9:46 PM CDT
- In force
- 2 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Flood severity
- None
Counties Logan County, NE, McPherson County, NE, Thomas County, NE
The radar
The North Platte radar (KLNX), 35 km from the middle of the area, began a volume at 02:47 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.7 hours before the alert went out and 57 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
- 1154 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 1374 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 273 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 10.0
The text
As transmitted, in the capitals the NWS used until 2016.
938 WGUS53 KLBF 090244 FFWLBF NEC113-117-171-090830- /O.NEW.KLBF.FF.W.0012.110709T0244Z-110709T0830Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 944 PM CDT FRI JUL 8 2011 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * FLASH FLOOD WARNING FOR... LOGAN COUNTY IN WEST CENTRAL NEBRASKA... NORTHEASTERN MCPHERSON COUNTY IN WEST CENTRAL NEBRASKA... SOUTHERN THOMAS COUNTY IN NORTH CENTRAL NEBRASKA... * UNTIL 330 AM CDT * AT 941 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATES OF RAINFALL EXCEEDING THREE INCHES HAVE BEEN INDICATED...AND RAINFALL 2.60 INCHES WAS REPORTED AT THE FIRE STATION IN VENANGO IN AN HOUR. ADDITIONAL RAINFALL MAY EXCEED TWO INCHES THIS EVENING. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... HIGHWAY 83 CROSSING THE DISMAL RIVER...RINGGOLD AND TARBOZ LAKE. PRECAUTIONARY/PREPAREDNESS ACTIONS... ADDITIONAL RAINFALL AMOUNTS OF TWO INCHES ARE POSSIBLE IN THE WARNED AREA. && LAT...LON 4149 10077 4187 10078 4187 10027 4149 10027 $$ SPRINGER
1 follow-up statement
666 WGUS73 KLBF 090246 FFSLBF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 946 PM CDT FRI JUL 8 2011 NEC113-117-171-090301- /O.CAN.KLBF.FF.W.0012.000000T0000Z-110709T0830Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LOGAN NE-MCPHERSON NE-THOMAS NE- 946 PM CDT FRI JUL 8 2011 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHERN THOMAS... NORTHEASTERN MCPHERSON AND LOGAN COUNTIES IS CANCELLED... THE AREA WARNED WAS SENT IN ERROR. LAT...LON 4149 10077 4187 10078 4187 10027 4149 10027 $$ SPRINGER
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 8:06 PM CDT | Areal Flood Advisory | LBF | Arthur, Garden | 6 hr |
| Jul 8, 9:26 PM CDT | Severe Thunderstorm Warning | LBF | Perkins | 49 min |
| Jul 8, 9:50 PM CDT | Flash Flood Warning | LBF | Chase, Perkins | 6 hr |
Nearby
Flash Flood Warnings in Nebraska, 2011Every flash flood warning in 2011
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.