Alert archive / Nevada / Flash Flood Warnings in 2011
Flash Flood Warning 5, NWS Reno, NV
NWS Reno, NV issued this flash flood warning at Jul 30, 2011, 3:22 PM PDT for Lyon County, Nevada. It was in force for 3 hr. 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 30, 2011, 3:22 PM PDT (22:22 UTC)
- Expired
- Jul 30, 2011, 6:15 PM PDT
- In force
- 3 hr
- Issued by
- NWS Reno, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Lyon County, NV
The radar
The Reno radar (KRGX), 62 km from the middle of the area, began a volume at 22:22 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, 10.4 hours before the alert went out and 106 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
- 2720 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
149 WGUS55 KREV 302222 FFWREV NVC019-310115- /O.NEW.KREV.FF.W.0005.110730T2222Z-110731T0115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE RENO NV 322 PM PDT SAT JUL 30 2011 THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL LYON COUNTY IN WESTERN NEVADA... * UNTIL 615 PM PDT * AT 317 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. STRONG THUNDERSTORM WEST OF WABUSKA AND JUST SOUTH OF FORT CHURCHILL STATE PARK IS PRODUCING HEAVY RAINFALL RATES OF OVER ONE INCH PER HOUR. THE AREA OF HIGHEST CONCERN IS THE CHURCHILL CANYON AND MILL CANYON AREAS SOUTH OF FORT CHURCHILL STATE PARK...WHERE HEAVY RAINFALL MAY PRODUCE A FLASH FLOODING. 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 3928 11940 3928 11926 3910 11926 3910 11941 $$ HOON
2 follow-up statements
903 WGUS75 KREV 302349 FFSREV FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO NV 449 PM PDT SAT JUL 30 2011 NVC019-310115- /O.CON.KREV.FF.W.0005.000000T0000Z-110731T0115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LYON NV- 449 PM PDT SAT JUL 30 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM PDT FOR CENTRAL LYON COUNTY... AT 435 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED AREA. STORMS CONTINUE TO PRODUCE RAIN IN THE MOUNTAINS SOUTH OF FORT CHURCHILL STATE PARK AND WEST OF WABUSKA. RAINFALL RATES HAVE DECREASED...ALTHOUGH FLASH FLOOD THREAT STILL REMAINS ESPECIALLY DOWNSTEAM ALONG THE MILL CREEK CANYON AND CHURCHILL CANYONS. FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR CREEKS. IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY. LAT...LON 3928 11940 3928 11926 3910 11926 3910 11941 $$ HOON
766 WGUS75 KREV 310107 FFSREV FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO NV 607 PM PDT SAT JUL 30 2011 NVC019-310117- /O.EXP.KREV.FF.W.0005.000000T0000Z-110731T0115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LYON NV- 607 PM PDT SAT JUL 30 2011 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 615 PM PDT FOR CENTRAL LYON COUNTY... THE THREAT FOR CONTINUED FLASH FLOODING HAS DIMINISHED. LIGHT RAINFALL IS EXPECTED TO FALL OVER THE AREA OVER THE NEXT SEVERAL HOURS. REMEMBER THAT MINOR FLOODING OR RUNOFF MAY CONTINUE IN LOW SPOTS FOR SEVERAL HOURS. LAT...LON 3928 11940 3928 11926 3910 11926 3910 11941 $$ HOON
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 5:10 PM PDT | Special Weather Statement | REV | Douglas | 50 min |
| Jul 29, 5:43 PM PDT | Areal Flood Advisory | REV | Douglas | 2 hr |
| Jul 29, 5:52 PM PDT | Special Weather Statement | REV | Douglas | 23 min |
| Jul 29, 6:14 PM PDT | Special Weather Statement | REV | Douglas, Lyon | 91 min |
| Jul 29, 6:34 PM PDT | Special Weather Statement | REV | 41 min | |
| Jul 29, 6:53 PM PDT | Special Weather Statement | REV | Douglas | 37 min |
| Jul 29, 7:16 PM PDT | Severe Thunderstorm Warning | REV | Storey, Washoe | 44 min |
| Jul 29, 7:55 PM PDT | Severe Thunderstorm Warning | REV | Washoe | 50 min |
| Jul 29, 9:25 PM PDT | Special Weather Statement | REV | Storey | 110 min |
| Jul 30, 2:55 AM PDT | Flash Flood Watch | REV | Lyon, Mineral | 38 hr |
| Jul 30, 1:47 PM PDT | Special Weather Statement | REV | Lyon, Mineral | 2 hr |
| Jul 30, 4:40 PM PDT | Special Weather Statement | REV | Douglas | 65 min |
| Jul 30, 4:58 PM PDT | Areal Flood Advisory | REV | Douglas | 48 hr |
Nearby
Flash Flood Warnings in Nevada, 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.