Alert archive / California / Flash Flood Warnings in 2016

Flash Flood Warning 1, NWS Medford, OR

June 5, 2016Siskiyou County, California

NWS Medford, OR issued this flash flood warning at Jun 5, 2016, 6:53 PM PDT for Siskiyou County, California. It was in force for 52 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
Jun 5, 2016, 6:53 PM PDT (01:53 UTC)
Expired
Jun 5, 2016, 7:45 PM PDT
In force
52 min
Issued by
NWS Medford, OR
Area
Storm-based polygon
Flood severity
None

County Siskiyou County, CA

The radar

The Medford radar (KMAX), 64 km from the middle of the area, began a volume at 01:54 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 00:00Z, 1.9 hours before the alert went out and 84 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-pSkew-T log-p diagram, Medford/Jackson, OR at 00:00Z on 2016-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1625 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 00:00Z on 2016-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1625 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
2535 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

006 
WGUS56 KMFR 060153
FFWMFR
CAC093-060245-
/O.NEW.KMFR.FF.W.0001.160606T0153Z-160606T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEDFORD OR
653 PM PDT SUN JUN 5 2016

THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN SISKIYOU COUNTY IN NORTHERN CALIFORNIA...

* UNTIL 745 PM PDT

* AT 650 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO ONE INCH OF RAIN HAS
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF WESTERN
  SISKIYOU COUNTY ON THE WESTERN EDGE OF THE HAPPY CAMP COMPLEX
  WILDFIRE BURN SCAR.
  EXCESSIVE RAINFALL OVER THE BURN SCAR WILL RESULT IN DEBRIS FLOW
  MOVING THROUGH THE ELK CREEK DRAINAGE. THE DEBRIS FLOW CAN CONSIST
  OF ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4175 12330 4168 12330 4168 12336 4175 12337

$$

SK
2 follow-up statements
973 
WGUS76 KMFR 060225
FFSMFR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEDFORD OR
725 PM PDT SUN JUN 5 2016

CAC093-060245-
/O.CON.KMFR.FF.W.0001.000000T0000Z-160606T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SISKIYOU CA-
725 PM PDT SUN JUN 5 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM PDT FOR
WESTERN SISKIYOU COUNTY...

AT 722 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. ONE TO TWO INCHES OF RAIN HAS
ALREADY FALLEN. FLASH FLOODING IS EXPECTED.

EXCESSIVE RAINFALL OVER THE WESTERN EDGE OF THE 2014 HAPPY CAMP
COMPLEX WILDFIRE BURN SCAR WILL RESULT IN DEBRIS FLOW MOVING THROUGH
THE ELK CREEK DRAINAGE. THE DEBRIS FLOW CAN CONSIST OF
ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.

FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF WESTERN
SISKIYOU COUNTY ON THE WESTERN EDGE OF THE 2014 HAPPY CAMP COMPLEX
WILDFIRE BURN SCAR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4175 12330 4168 12330 4168 12336 4175 12337

$$

SK
925 
WGUS76 KMFR 060246
FFSMFR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEDFORD OR
746 PM PDT SUN JUN 5 2016

CAC093-060253-
/O.EXP.KMFR.FF.W.0001.000000T0000Z-160606T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SISKIYOU CA-
746 PM PDT SUN JUN 5 2016

...THE FLASH FLOOD WARNING FOR WESTERN SISKIYOU COUNTY WILL EXPIRE AT
745 PM PDT...

THE HEAVIEST RAIN HAS MOVED AWAY FROM THE HAPPY CAMP COMPLEX
WILDFIRE BURN SCAR. FLOODING IS NO LONGER EXPECTED TO POSE A THREAT.
HOWEVER, PLEASE CONTINUE TO USE CAUTION IN AND AROUND ELK CREEK
DRAINAGE.

LAT...LON 4175 12330 4168 12330 4168 12336 4175 12337

$$

SK

The office that day

Everything else NWS Medford, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 5, 8:00 PM PDTSpecial Weather StatementMFRSiskiyou30 min
Jun 5, 9:13 PM PDTSevere Thunderstorm WarningMFRSiskiyou32 min
Jun 5, 9:46 PM PDTSevere Thunderstorm WarningMFRSiskiyou29 min
Jun 6, 11:10 AM PDTFlash Flood WatchMFRModoc, Siskiyou13 hr

Nearby

Flash Flood Warnings in California, 2016Every 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.