Alert archive / California / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 2, NWS San Diego, CA

January 6, 2016Orange County, Riverside County, San Diego County, California

NWS San Diego, CA issued this severe thunderstorm warning at Jan 6, 2016, 1:04 PM PST for Orange County, Riverside County, San Diego County, California. It was in force for 56 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jan 6, 2016, 1:04 PM PST (21:04 UTC)
Expired
Jan 6, 2016, 2:00 PM PST
In force
56 min
Issued by
NWS San Diego, CA
Area
Storm-based polygon

Counties Orange County, CA, Riverside County, CA, San Diego County, CA

The radar

The Santa Ana Mts radar (KSOX), 53 km from the middle of the area, began a volume at 21:06 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.

What was reported inside it

TimeReportWhereRemark
Jan 6, 1:30 PM PSTTSTM WND DMG1 Ene Bonsall, CASECTIONS OF A BARN ROOF REMOVED BY STRONG WINDS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

San Diego, CA (KNKX), launched 12:00Z, 9.1 hours before the alert went out and 69 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 12:00Z on 2016-01-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, San Diego, CA at 12:00Z on 2016-01-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.1939587897117Sfc1 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
17 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
791 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

300 
WUUS56 KSGX 062104
SVRSGX
CAC059-065-073-062200-
/O.NEW.KSGX.SV.W.0002.160106T2104Z-160106T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
104 PM PST WED JAN 6 2016

THE NATIONAL WEATHER SERVICE IN SAN DIEGO  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ORANGE COUNTY IN SOUTHWESTERN CALIFORNIA...
  RIVERSIDE COUNTY IN SOUTHERN CALIFORNIA...
  NORTHWESTERN SAN DIEGO COUNTY IN SOUTHWESTERN CALIFORNIA...

* UNTIL 200 PM PST

* AT 100 PM PST...DOPPLER RADAR INDICATED A CLUSTER OF SEVERE
  THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH. ONE STORM WAS LOCATED OVER NORTHEASTERN CAMP PENDLETON...AND
  MOVING NORTHEAST AT 25 MPH. ANOTHER STORM IS MOVING TOWARDS
  FALLBROOK. A THIRD CELL IS OVER OPEN WATER MOVING TOWARDS
  OCEANSIDE. THE POTENTIAL  FOR A WATERSPOUT OR BRIEF TORNADO IS
  POSSIBLE GIVEN THE UNSTABLE ENVIRONMENT. HAIL IS POSSIBLE WITH
  THESE STORMS.

* LOCATIONS IMPACTED INCLUDE...
  OCEANSIDE...CARLSBAD...TEMECULA...VISTA...SAN CLEMENTE...
  ENCINITAS...SOUTHERN LAKE ELSINORE...DEL MAR...VALLEY CENTER AND
  FALLBROOK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 3375 11707 3362 11686 3332 11689 3296 11727
      3317 11735 3321 11741 3332 11749 3338 11759
      3344 11764 3346 11771 3351 11775
TIME...MOT...LOC 2100Z 241DEG 13KT 3340 11740 

$$
TARDY
2 follow-up statements
080 
WWUS56 KSGX 062124
SVSSGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
124 PM PST WED JAN 6 2016

CAC059-065-073-062200-
/O.CON.KSGX.SV.W.0002.000000T0000Z-160106T2200Z/
ORANGE CA-RIVERSIDE CA-SAN DIEGO CA-
124 PM PST WED JAN 6 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM PST
FOR SOUTHEASTERN ORANGE...RIVERSIDE AND NORTHWESTERN SAN DIEGO
COUNTIES...

AT 118 PM PST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR FALLBROOK...MOVING NORTHEAST AT 20 MPH. THIS SEVERE
STORM WILL IMPACT WILDOMAR.

ANOTHER SEVERE STORM IS PRODUCING A WATERSPOUT WEST OF CARLSBAD.
THIS STORM WILL REACH THE IMMEDIATE COAST BETWEEN ENCINITAS AND
OCEANSIDE BY 140 PM. 

LOCATIONS IMPACTED INCLUDE...
OCEANSIDE...VISTA...CARLSBAD...ENCINITAS...TEMECULA...SAN MARCOS...
SAN CLEMENTE...SAN JUAN CAPISTRANO...FALLBROOK...WILDOMAR...SOLANA
BEACH...CAMP PENDLETON SOUTH...CANYON LAKE...CAMP PENDLETON NORTH...
LAKELAND VILLAGE...MURRIETA...VALLEY CENTER...LAKE SAN MARCOS...
HIDDEN MEADOWS AND BONSALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3375 11707 3362 11686 3332 11689 3296 11727
      3317 11735 3321 11741 3332 11749 3338 11759
      3344 11764 3346 11771 3351 11775
TIME...MOT...LOC 2118Z 241DEG 13KT 3344 11731 

$$

TARDY
309 
WWUS56 KSGX 062202
SVSSGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
202 PM PST WED JAN 6 2016

CAC059-065-073-062209-
/O.EXP.KSGX.SV.W.0002.000000T0000Z-160106T2200Z/
ORANGE CA-RIVERSIDE CA-SAN DIEGO CA-
202 PM PST WED JAN 6 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ORANGE...
RIVERSIDE AND NORTHWESTERN SAN DIEGO COUNTIES WILL EXPIRE AT 200 PM
PST...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. WIND GUSTS OF 40 TO
60 MPH OCCURRED WITH THESE STORMS AND A POSSIBLE SIGHTING OF A BRIEF
TORNADO EAST OF SAN CLEMENTE. 

HOWEVER A LARGE AREA OF THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL
AND FLASH FLOODING IN NORTHWEST SAN DIEGO COUNTY...SPILLING ACROSS
THE ORANGE AND RIVERSIDE COUNTY LINES. RAINFALL OF 0.50 PER HOUR IS
EXPECTED. 

LAT...LON 3375 11707 3362 11686 3332 11689 3296 11727
      3317 11735 3321 11741 3332 11749 3338 11759
      3344 11764 3346 11771 3351 11775
TIME...MOT...LOC 2159Z 241DEG 13KT 3344 11731 

$$

TARDY

The office that day

Everything else NWS San Diego, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 5, 4:11 PM PSTFlash Flood WarningSGXSan Diego3 hr
Jan 5, 6:46 PM PSTAreal Flood AdvisorySGXRiverside, San Diego4 hr
Jan 5, 8:28 PM PSTRiver Flood WarningSGXSan Diego9 hr
Jan 6, 4:05 AM PSTWind AdvisorySGXOrange, San Diego14 hr
Jan 6, 4:28 AM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego32 hr
Jan 6, 10:36 AM PSTBeach Hazards StatementSGXOrange, San Diego15 hr
Jan 6, 10:36 AM PSTHigh Surf WarningSGXOrange, San Diego59 hr
Jan 6, 12:00 PM PSTRiver Flood WarningSGXSan Diego29 hr
Jan 6, 12:10 PM PSTFlash Flood WarningSGXOrange5 hr
Jan 6, 12:35 PM PSTSpecial Marine WarningSGX55 min
Jan 6, 12:40 PM PSTAreal Flood WarningSGXOrange, Riverside, San Bernardino6 hr
Jan 6, 12:45 PM PSTSpecial Marine WarningSGX45 min
Jan 6, 12:46 PM PSTSevere Thunderstorm WarningSGXOrange, Riverside, San Bernardino44 min
Jan 6, 1:23 PM PSTSpecial Marine WarningSGX37 min
Jan 6, 1:30 PM PSTSpecial Marine WarningSGX45 min
Jan 6, 1:34 PM PSTFlash Flood WarningSGXOrange, Riverside, San Bernardino, San Diego3 hr
Jan 6, 1:50 PM PSTSpecial Marine WarningSGX40 min
Jan 6, 2:09 PM PSTSpecial Marine WarningSGX96 min
Jan 6, 2:23 PM PSTSevere Thunderstorm WarningSGXSan Diego52 min
Jan 6, 2:45 PM PSTSpecial Marine WarningSGX60 min
Jan 6, 2:54 PM PSTTornado WarningSGXSan Diego20 min
Jan 6, 2:56 PM PSTTornado WarningSGXSan Diego19 min
Jan 6, 3:12 PM PSTFlash Flood WarningSGXSan Diego3 hr
Jan 6, 3:19 PM PSTSevere Thunderstorm WarningSGXSan Diego43 min
Jan 6, 3:50 PM PSTSpecial Marine WarningSGX85 min

Nearby

Severe Thunderstorm Warnings in California, 2016Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.