Alert archive / California / Flash Flood Warnings in 2011
Flash Flood Warning 2, NWS Reno, NV
NWS Reno, NV issued this flash flood warning at Jul 6, 2011, 6:40 PM PDT for Lassen County, California. It was in force for 80 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 6, 2011, 6:40 PM PDT (01:40 UTC)
- Expired
- Jul 6, 2011, 8:00 PM PDT
- In force
- 80 min
- Issued by
- NWS Reno, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Lassen County, CA
The radar
The Reno radar (KRGX), 113 km from the middle of the area, began a volume at 01:42 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 00:00Z, 1.7 hours before the alert went out and 210 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
- 2990 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
833 WGUS55 KREV 070140 FFWREV CAC035-070300- /O.NEW.KREV.FF.W.0002.110707T0140Z-110707T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE RENO NV 640 PM PDT WED JUL 6 2011 THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL LASSEN COUNTY IN NORTHERN CALIFORNIA... * UNTIL 800 PM PDT * AT 634 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A THUNDERSTORM OVER HIGHWAY 395 NORTH OF HONEY LAKE...BETWEEN VIEWLAND ROAD AND SHINN RANCH ROAD. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HIGHWAY 395 NORTH OF HONEY LAKE...BETWEEN SUSANVILLE AND RAVENDALE. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. JUST A FEW INCHES OF FAST FLOWING WATER IS POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN. LAT...LON 4056 12048 4075 12011 4043 12006 4040 12044 $$ SCV
2 follow-up statements
844 WGUS75 KREV 070210 FFSREV FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO NV 710 PM PDT WED JUL 6 2011 CAC035-070300- /O.CON.KREV.FF.W.0002.000000T0000Z-110707T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LASSEN CA- 710 PM PDT WED JUL 6 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM PDT FOR EAST CENTRAL LASSEN COUNTY... AT 700 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS PRODUCING FLASH FLOODING OVER HIGHWAY 395 NORTH OF HONEY LAKE...BETWEEN VIEWLAND AND SHINN RANCH ROAD. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HIGHWAY 395 BETWEEN SUSANVILLE AND RAVENDALE...KARLO...DEEP CREEK...AND SECRET CREEK. DOPPLER RADAR INDICATES THAT BETWEEN 1 TO 2 INCHES OF RAIN HAS FALLEN ON HIGHWAY 395 IN THE PAST HOUR. ADDITIONAL THUNDERSTORMS CONTINUE TO DEVELOP TO THE SOUTHWEST AND MOVE OVER THE SAME AREA. SIGNIFICANT RUNOFF IS LIKELY OCCURRING ALONG HIGHWAY 395 BETWEEN DEEP CUT ROAD AND SHINN RANCH ROAD. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. JUST A FEW INCHES OF FAST FLOWING WATER IS POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN. LAT...LON 4056 12048 4075 12011 4043 12006 4040 12044 $$ SCV
422 WGUS75 KREV 070301 FFSREV FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO NV 801 PM PDT WED JUL 6 2011 CAC035-070311- /O.EXP.KREV.FF.W.0002.000000T0000Z-110707T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LASSEN CA- 801 PM PDT WED JUL 6 2011 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR EAST CENTRAL LASSEN COUNTY... THE STORMS THAT EARLIER PROMPTED THE FLASH FLOOD WARNING HAVE DISSIPATED...WITH A DIMINISHING FLOOD THREAT. REMEMBER THAT MINOR FLOODING OF LOW SPOTS MAY CONTINUE FOR SEVERAL HOURS. LAT...LON 4056 12048 4075 12011 4043 12006 4040 12044 $$ HOHMANN
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 5:19 PM PDT | Special Weather Statement | REV | Sierra | 41 min |
| Jul 6, 6:13 PM PDT | Special Weather Statement | REV | Lassen | 32 min |
Nearby
Flash Flood Warnings in California, 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.