Alert archive / California / Flash Flood Warnings in 2016

Flash Flood Warning 5, NWS Reno, NV

October 16, 2016El Dorado County, California

NWS Reno, NV issued this flash flood warning at Oct 16, 2016, 11:48 AM PDT for El Dorado County, California. It was in force for 6 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: Oct 16, 2016, 11:48 AM PDT (18:48 UTC)
Expired: Oct 16, 2016, 5:45 PM PDT
In force: 6 hr
Issued by: NWS Reno, NV
Area: Storm-based polygon
Flood severity: None

County El Dorado County, CA

The radar

The Reno radar (KRGX), 105 km from the middle of the area, began a volume at 18:48 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, 6.8 hours before the alert went out and 176 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: 1215 m above ground
0-6 km bulk shear: 88 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 281 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

759 
WGUS55 KREV 161848
FFWREV
CAC017-162145-
/O.NEW.KREV.FF.W.0005.161016T1848Z-161016T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RENO NV
1148 AM PDT SUN OCT 16 2016

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EL DORADO COUNTY IN NORTHERN CALIFORNIA...

* UNTIL 245 PM PDT

* AT 1145 AM PDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE
  EMERALD BAY FIRE BURN SCAR FLASH FLOODING IS EXPECTED TO BEGIN
  SHORTLY.

* FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF EL DORADO
  COUNTY.
  EXCESSIVE RAINFALL OVER THE BURN SCAR MAY RESULT IN A DEBRIS FLOW
  MOVING OVER HIGHWAY 89. THE DEBRIS FLOW CAN CONSIST OF
  ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING AND DEBRIS FLOWS ARE EXTREMELY DANGEROUS AND CAN
DESTROY STRUCTURES AND WASH OUT BRIDGES AND ROADS. DEBRIS FLOWS
OFTEN CONTAIN MASSIVE BOULDERS...TREES AND LARGE AMOUNTS OF SEDIMENT
MOVING AT HIGH RATES OF SPEED. PEOPLE LIVING DOWNHILL OR DOWNSTREAM
SHOULD TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY. 

&&

LAT...LON 3894 12007 3893 12008 3893 12009 3895 12008

$$

MB

1 follow-up statement

846 
WGUS55 KREV 162138
FFWREV
CAC017-170045-
/O.EXT.KREV.FF.W.0005.000000T0000Z-161017T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RENO NV
238 PM PDT SUN OCT 16 2016

THE NATIONAL WEATHER SERVICE IN RENO HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  EL DORADO COUNTY IN NORTHERN CALIFORNIA...

* UNTIL 545 PM PDT

* AT 236 PM PDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE
  EMERALD FIRE BURN SCAR. FLASH FLOODING OR DEBRIS FLOW ARE HIGHLY
  LIKELY TO OCCUR.

* FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF EL DORADO
  COUNTY.
  EXCESSIVE RAINFALL OVER THE BURN SCAR WILL RESULT IN DEBRIS FLOW
  MOVING OVER HIGHWAY 89. THE DEBRIS FLOW CAN CONSIST OF
  ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING AND DEBRIS FLOWS ARE EXTREMELY DANGEROUS AND CAN
DESTROY STRUCTURES AND WASH OUT BRIDGES AND ROADS. DEBRIS FLOWS
OFTEN CONTAIN MASSIVE BOULDERS...TREES AND LARGE AMOUNTS OF SEDIMENT
MOVING AT HIGH RATES OF SPEED. PEOPLE LIVING DOWNHILL OR DOWNSTREAM
SHOULD TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 3894 12007 3893 12008 3893 12009 3895 12008

$$

MB

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 15, 5:47 PM PDT	Flash Flood Warning	REV	El Dorado	6 hr
Oct 16, 10:53 AM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	24 hr
Oct 16, 4:00 PM PDT	Winter Weather Advisory	REV	Alpine, El Dorado, Nevada, Placer	16 hr

Nearby

Flash Flood Warnings in California, 2016 Every flash flood warning in 2016

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.