Alert archive / California / Flash Flood Warnings in 2016

Flash Flood Warning 25, NWS Las Vegas, NV

July 1, 2016San Bernardino County, California

NWS Las Vegas, NV issued this flash flood warning at Jul 1, 2016, 2:06 AM PDT for San Bernardino County, California. 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 1, 2016, 2:06 AM PDT (09:06 UTC)
Expired
Jul 1, 2016, 5:00 AM PDT
In force
3 hr
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

County San Bernardino County, CA

The radar

The Las Vegas radar (KESX), 81 km from the middle of the area, began a volume at 09:06 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

San Diego, CA (KNKX), launched 00:00Z, 9.1 hours before the alert went out and 341 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, San Diego, CA at 00:00Z on 2016-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, San Diego, CA at 00:00Z on 2016-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -16 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1857 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-16 m²/s²
0-3 km storm-relative helicity
3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

138 
WGUS55 KVEF 010906
FFWVEF
CAC071-011200-
/O.NEW.KVEF.FF.W.0025.160701T0906Z-160701T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
206 AM PDT FRI JUL 1 2016

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...

* UNTIL 500 AM PDT

* AT 204 AM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN NORTH OF INTERSTATE 15 AND EAST OF HIGHWAY 127 ACROSS
  NORTHERN SAN BERNARDINO COUNTY. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH
  CENTRAL SAN BERNARDINO COUNTY, INCLUDING EXCELSIOR MINE ROAD AND
  KINGSTON MINE ROAD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3577 11566 3550 11555 3536 11602 3575 11603

$$

MORGAN
1 follow-up statement
782 
WGUS75 KVEF 010958
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
258 AM PDT FRI JUL 1 2016

CAC071-011007-
/O.CAN.KVEF.FF.W.0025.000000T0000Z-160701T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
258 AM PDT FRI JUL 1 2016

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL SAN BERNARDINO COUNTY IS
CANCELLED...

AT 257 AM PDT, RADAR INDICATED THAT THUNDERSTORMS WHICH HAD BEEN
OVER EXCELSIOR MINE ROAD AND KINGSTON MINE ROAD HAD RAPIDLY
DISSIPATED. FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE
CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3577 11566 3550 11555 3536 11602 3575 11603

$$

MORGAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 5:48 PM PDTSevere Thunderstorm WarningVEFSan Bernardino42 min
Jun 30, 5:54 PM PDTFlash Flood WarningVEFSan Bernardino6 hr
Jun 30, 6:26 PM PDTSevere Thunderstorm WarningVEFSan Bernardino34 min
Jun 30, 6:59 PM PDTSevere Thunderstorm WarningVEFSan Bernardino31 min
Jun 30, 10:32 PM PDTFlash Flood WarningVEFInyo3 hr
Jun 30, 10:56 PM PDTSevere Thunderstorm WarningVEFInyo64 min
Jun 30, 11:08 PM PDTFlash Flood WarningVEFInyo4 hr
Jun 30, 11:49 PM PDTFlash Flood WarningVEFInyo3 hr
Jul 1, 1:41 AM PDTFlash Flood WarningVEFSan Bernardino3 hr
Jul 1, 3:36 AM PDTFlash Flood WarningVEFSan Bernardino3 hr
Jul 1, 3:12 PM PDTSevere Thunderstorm WarningVEFSan Bernardino63 min
Jul 1, 3:25 PM PDTAreal Flood AdvisoryVEFSan Bernardino3 hr
Jul 1, 4:05 PM PDTSevere Thunderstorm WarningVEFSan Bernardino55 min
Jul 1, 4:24 PM PDTFlash Flood WarningVEFSan Bernardino3 hr
Jul 1, 4:59 PM PDTSevere Thunderstorm WarningVEFSan Bernardino61 min

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.