Alert archive / Nevada / Flash Flood Watches in 2006

Flash Flood Watch 1, NWS Reno, NV

June 27, 20067 counties in Nevada; 5 counties in California

NWS Reno, NV issued this flash flood watch at Jun 27, 2006, 9:34 PM PDT for 7 counties in Nevada; 5 counties in California. It took effect at Jun 28, 2006, 3:42 AM PDT. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued: Jun 27, 2006, 9:34 PM PDT (04:34 UTC)
In effect from: Jun 28, 2006, 3:42 AM PDT
Expired: Jun 28, 2006, 9:00 PM PDT
In force: 17 hr
Issued by: NWS Reno, NV
Flood severity: None

Counties Lassen County, CA, Modoc County, CA, Mono County, CA, Plumas County, CA, Sierra County, CA, Churchill County, NV, Douglas County, NV, Lyon County, NV, Mineral County, NV, Pershing County, NV, Storey County, NV, Washoe County, NV

The radar

The Reno radar (KRGX), 10 km from the middle of the area, began a volume at 04:34 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

Oakland, CA (KOAK), launched 00:00Z, 4.6 hours before the alert went out and 317 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1899 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Reno, NV wrote its last area forecast discussion before this flash flood watch went out at Jun 27, 9:30 PM PDT, 4 minutes earlier.

Area forecast discussion, Jun 27, 9:30 PM PDT, 4 minutes before

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Hazardous weather outlook, Jun 27, 7:00 AM PDT, 14 hours 34 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RENO NV
700 AM PDT TUE JUN 27 2006

CAZ070>073-NVZ001>005-280400-
SURPRISE VALLEY CALIFORNIA-LASSEN-EASTERN PLUMAS-
EASTERN SIERRA COUNTIES-GREATER LAKE TAHOE AREA-MONO-
MINERAL AND SOUTHERN LYON COUNTIES-GREATER RENO-CARSON CITY-
MINDEN AREA-WESTERN NEVADA BASIN AND RANGE INCLUDING PYRAMID LAKE-
NORTHERN WASHOE COUNTY-
700 AM PDT TUE JUN 27 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE EASTERN SIERRA...
NORTHEAST CALIFORNIA AND WESTERN NEVADA.

.DAY ONE...TODAY

RED FLAG WARNING IN EFFECT FROM 1 PM TO 10 PM TODAY FOR
THUNDERSTORMS WITH STRONG OUTFLOWS AND ISOLATED DRY LIGHTNING FOR
NORTHEAST CALIFORNIA AND NORTHWEST NEVADA. SEE FNUS55 KREV FWFREV
FOR FURTHER INFORMATION.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

INCREASING MOISTURE WILL RESULT IN STRONGER THUNDERSTORMS WITH HEAVY
RAINFALL. FLASH FLOOD POTENTIAL WILL INCREASE GREATLY ON WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER TO THE
NATIONAL WEATHER SERVICE ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, Jun 27, 6:41 PM PDT, 2 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
641 PM PDT TUE JUN 27 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0341 PM     HAIL             5 WSW BECKWOURTH        39.80N 120.47W
06/27/2006  E0.25 INCH       PLUMAS             CA   TRAINED SPOTTER

            PEA SIZE HAIL FELL FOR A SHORT TIME.

0422 PM     HAIL             6 WSW BOCA RESERVOIR    39.36N 120.18W
06/27/2006  E0.25 INCH       NEVADA             CA   TRAINED SPOTTER

            PEA SIZE HAIL REPORTED AND LASTED 15-20 MINUTES

0437 PM     HAIL             5 SW BOCA RESERVOIR     39.35N 120.17W
06/27/2006  E0.25 INCH       NEVADA             CA   TRAINED SPOTTER

            PEA SIZE HAIL WITH MODERATE RAIN

0448 PM     HAIL             5 W BOCA RESERVOIR      39.40N 120.18W
06/27/2006  E0.25 INCH       NEVADA             CA   TRAINED SPOTTER

            PEA SIZE HAIL REPORTED

0533 PM     HAIL             EMERALD BAY             38.96N 120.09W
06/27/2006  E0.25 INCH       EL DORADO          CA   AMATEUR RADIO

            PEA SIZE HAIL REPORTED ON HIGHWAY 89 NEAR EMERALD BAY

0544 PM     HAIL             3 N MEYERS              38.91N 120.00W
06/27/2006  E0.25 INCH       EL DORADO          CA   TRAINED SPOTTER

            PEA SIZE HAIL WITH RAINFALL 0.25 IN 30 MINUTES.

0545 PM     HAIL             4 N MEYERS              38.92N 120.02W
06/27/2006  E0.25 INCH       EL DORADO          CA   TRAINED SPOTTER

            PEA SIZE HAIL REPORTED

0545 PM     TSTM WND GST     N SILVER SPRINGS        39.42N 119.22W
06/27/2006  E0.00 MPH        LYON               NV   TRAINED SPOTTER

            BLOWING DUST ACROSS HIGHWAY 50 REDUCING VISIBILITY TO
            ZERO

0545 PM     AVALANCHE        13 E SLOAT              39.87N 120.48W
06/27/2006                   PLUMAS             CA   TRAINED SPOTTER

            RAINFALL 0.20 INCHES IN 10 MINUTES

0545 PM     HEAVY RAIN       3 N BIEBER              41.16N 121.14W
06/27/2006  E0.55 INCH       LASSEN             CA   TRAINED SPOTTER

            PEA SIZE HAIL REPORTED. RAINFALL 0.55 INCHES IN 15
            MINUTES

&&

RCRUZ

The office that day

Everything else NWS Reno, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 27, 5:05 PM PDT	Severe Thunderstorm Warning	REV	Nevada, Plumas, Sierra	55 min
Jun 27, 6:11 PM PDT	Severe Thunderstorm Warning	REV	Plumas, Sierra	25 min
Jun 27, 7:27 PM PDT	Severe Thunderstorm Warning	REV	Nevada, Sierra	38 min

Nearby

Flash Flood Watches in Nevada, 2006 Flash Flood Watches in California, 2006 Every flash flood watch in 2006

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.