Alert archive / California / Flash Flood Warnings in 2010
Flash Flood Warning 13, NWS Reno, NV
NWS Reno, NV issued this flash flood warning at Aug 7, 2010, 4:21 PM PDT for Sierra County, California. It was in force for 50 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
- Aug 7, 2010, 4:21 PM PDT (23:21 UTC)
- Expired
- Aug 7, 2010, 5:11 PM PDT
- In force
- 50 min
- Issued by
- NWS Reno, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Sierra County, CA
The radar
The Reno radar (KRGX), 59 km from the middle of the area, began a volume at 23:21 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
Reno, NV (KREV), launched 12:00Z, 11.4 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2502 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
679 WGUS55 KREV 072321 FFWREV CAC091-080115- /O.NEW.KREV.FF.W.0013.100807T2321Z-100808T0115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE RENO NV 421 PM PDT SAT AUG 7 2010 THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN SIERRA COUNTY IN NORTHERN CALIFORNIA...THIS INCLUDES DOG VALLEY AND STAMPEDE RESERVOIR... * UNTIL 615 PM PDT * AT 408 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY...FLASH FLOOD PRODUCING...RAINS FROM A CLUSTER OF THUNDERSTORMS EAST AND NORTHEAST OF STAMPEDE RESERVOIR. THESE THUNDERSTORMS ARE NEARLY STATIONARY. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DOG VALLEY STAMPEDE RESERVOIR AND AND INTERSTATE 80 NEAR FARAD. DOPPLER RADAR INDICATES UP TO ONE INCH OF RAIN HAS FALLEN IN THE LAST HOUR IN THE HILLY TERRAIN NORTH OF INTERSTATE 80 IN THE LAST WITH ADDITIONAL RAINFALL UP TO ONE HALF INCH POSSIBLE. 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. IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY. LAT...LON 3965 12019 3958 12000 3944 12000 3945 12012 $$
2 follow-up statements
736 WGUS55 KREV 072324 CCA FFWREV CAC091-080115- /O.COR.KREV.FF.W.0013.100807T2321Z-100808T0115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING...CORRECTED NATIONAL WEATHER SERVICE RENO NV 421 PM PDT SAT AUG 7 2010 THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN SIERRA COUNTY IN NORTHERN CALIFORNIA...THIS INCLUDES DOG VALLEY AND STAMPEDE RESERVOIR... * UNTIL 615 PM PDT * AT 408 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY...FLASH FLOOD PRODUCING...RAINS FROM A CLUSTER OF THUNDERSTORMS EAST AND NORTHEAST OF STAMPEDE RESERVOIR. THESE THUNDERSTORMS ARE NEARLY STATIONARY. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DOG VALLEY STAMPEDE RESERVOIR AND AND INTERSTATE 80 NEAR FARAD. DOPPLER RADAR INDICATES UP TO ONE INCH OF RAIN HAS FALLEN IN THE LAST HOUR IN THE HILLY TERRAIN NORTH OF INTERSTATE 80 WITH ADDITIONAL RAINFALL UP TO ONE HALF INCH POSSIBLE. FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR CREEKS. IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY. LAT...LON 3965 12019 3958 12000 3944 12000 3945 12012 $$
899 WGUS75 KREV 080011 FFSREV FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO NV 511 PM PDT SAT AUG 7 2010 CAC091-080019- /O.CAN.KREV.FF.W.0013.000000T0000Z-100808T0115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SIERRA CA- 511 PM PDT SAT AUG 7 2010 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN SIERRA COUNTY... THE STORMS THAT EARLIER PROMPTED THE FLASH FLOOD WARNING HAVE DISSIPATED AND MOVED WEST...WITH A DIMINISHING FLOOD THREAT. REMEMBER THAT THE THREAT OF MINOR FLOODING OF LOW SPOTS MAY CONTINUE FOR SEVERAL HOURS. ADDITIONAL THUNDERSTORMS MAY REDEVELOP OVER THE REGION THROUGH 7 PM...PRODUCING ADDITIONAL RAINFALL AND SMALL HAIL. LAT...LON 3965 12019 3958 12000 3944 12000 3945 12012 $$
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:57 PM PDT | Special Weather Statement | REV | Lassen | 33 min |
| Aug 7, 3:38 PM PDT | Special Weather Statement | REV | Sierra | 37 min |
| Aug 7, 4:34 PM PDT | Special Weather Statement | REV | Alpine | 26 min |
| Aug 7, 4:38 PM PDT | Special Weather Statement | REV | Plumas | 37 min |
Nearby
Flash Flood Warnings in California, 2010Every flash flood warning in 2010
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.