Alert archive / California / Flash Flood Watches in 2013

Flash Flood Watch 3, NWS Reno, NV

July 26, 20134 counties in Nevada; 5 counties in California

NWS Reno, NV issued this flash flood watch at Jul 26, 2013, 10:19 AM PDT for 4 counties in Nevada; 5 counties in California. It took effect at Jul 26, 2013, 2:00 PM PDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jul 26, 2013, 10:19 AM PDT (17:19 UTC)
In effect from: Jul 26, 2013, 2:00 PM PDT
Expired: Jul 26, 2013, 9:07 PM PDT
In force: 7 hr
Issued by: NWS Reno, NV
Flood severity: None

Counties Alpine County, CA, El Dorado County, CA, Mono County, CA, Nevada County, CA, Placer County, CA, Douglas County, NV, Lyon County, NV, Storey County, NV, Washoe County, NV

The radar

The Reno radar (KRGX), 82 km from the middle of the area, began a volume at 17:20 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

Medford/Jackson, OR (KMFR), launched 12:00Z, 5.3 hours before the alert went out and 442 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: 2947 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 15 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 Jul 26, 6:14 AM PDT, 4 hours 5 minutes earlier.

Area forecast discussion, Jul 26, 6:14 AM PDT, 4 hours 5 minutes before

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Hazardous weather outlook, Jul 26, 6:43 AM PDT, 3 hours 36 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 7:18 PM PDT	Special Weather Statement	REV	Churchill	57 min
Jul 25, 7:20 PM PDT	Special Weather Statement	REV	Churchill	55 min
Jul 26, 4:47 PM PDT	Special Weather Statement	REV		28 min
Jul 26, 4:52 PM PDT	Special Weather Statement	REV	Lyon	23 min
Jul 25, 5:22 PM PDT	Special Weather Statement	REV	Lassen	53 min
Jul 25, 5:40 PM PDT	Severe Thunderstorm Warning	REV	Lassen, Plumas	50 min
Jul 25, 6:20 PM PDT	Special Weather Statement	REV	Lassen	55 min
Jul 25, 6:41 PM PDT	Severe Thunderstorm Warning	REV	Lassen	49 min
Jul 25, 7:19 PM PDT	Areal Flood Advisory	REV	Lassen	116 min

Nearby

Flash Flood Watches in California, 2013 Flash Flood Watches in Nevada, 2013 Every flash flood watch in 2013

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.