Alert archive / California / High Wind Warnings in 2017

High Wind Warning 7, NWS San Diego, CA

April 28, 20174 counties in California

NWS San Diego, CA issued this high wind warning at Apr 28, 2017, 4:38 AM PDT for 4 counties in California. It took effect at Apr 28, 2017, 10:00 PM PDT. It was in force for 14 hr. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 28, 2017, 4:38 AM PDT (11:38 UTC)
In effect from
Apr 28, 2017, 10:00 PM PDT
Expired
Apr 29, 2017, 12:00 PM PDT
In force
14 hr
Issued by
NWS San Diego, CA

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

The radar

The Santa Ana Mts radar (KSOX), 88 km from the middle of the area, began a volume at 11:42 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
Apr 29, 6:51 AM PDTNON-TSTM WND GST 706 Ene Tustin Foothills, CAMESONET STATION FRCC1, FREMONT CANYON.
Apr 29, 8:29 AM PDTNON-TSTM WND GST 656 Ssw Corona, CAMESONET STATION E3131, PLEASANTS PEAK.

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 00:00Z, 11.6 hours before the alert went out and 124 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 2017-04-28Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, San Diego, CA at 00:00Z on 2017-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.193958Sfc1 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
1198 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

330 
WWUS76 KSGX 281138
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
438 AM PDT Fri Apr 28 2017

...Strong northeast winds tonight through Saturday...

.Surface high pressure building over the Great Basin will produce
strong Santa Ana winds tonight through Saturday afternoon. 
Northerly winds will also be strong this morning in the San 
Bernardino Mountains, just below the Cajon Pass and in parts of 
Orange County, but the strongest winds will surface later tonight 
and Saturday with sustained winds of 25 to 35 MPH and with gusts 
from 50 to 60 MPH. The winds will gradually diminish Saturday 
afternoon.

CAZ048-055-057-554-282100-
/O.UPG.KSGX.HW.A.0006.170429T0500Z-170429T2100Z/
/O.NEW.KSGX.HW.W.0007.170429T0500Z-170429T2100Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Santa Ana Mountains and Foothills-
Orange County Inland Areas-
Including the cities of Ontario, Fontana, Rancho Cucamonga, 
Crestline, Lake Arrowhead, Big Bear Lake, Running Springs, 
and Mission Viejo
438 AM PDT Fri Apr 28 2017

...HIGH WIND WARNING IN EFFECT FROM 10 PM THIS EVENING TO 2 PM
PDT SATURDAY...

The National Weather Service in San Diego has issued a High Wind
Warning, which is in effect from 10 PM this evening to 2 PM PDT
Saturday. The High Wind Watch is no longer in effect. 

* WINDS...North to northeast winds 15 to 30 mph Friday, 
  increasing to 25 to 35 MPH tonight, with gusts from 50 to 60 
  MPH. Isolated gusts on ridgetops and immediately below canyons 
  up to 70 mph.

* TIMING...The strongest winds will occur after midnight tonight
  through mid morning Saturday.

* LOCATION...I-15 through the Cajon Pass into the Inland Empire.
  The Santa Ana Mountains and Foothills and parts of inland 
  Orange County. 

* Impacts...Sudden, strong cross-winds, especially for high-profile
  vehicles. Possible tree and utility line damage. Downed palm 
  fronds. 

* OUTLOOK...Winds will diminish rapidly Saturday afternoon.

* REPORTS...Please send reports of strong winds and wind damage 
  to the National Weather Service via our Facebook and Twitter 
  feeds and online.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring.  Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

CAZ552-282100-
/O.NEW.KSGX.HW.W.0007.170429T0500Z-170429T2100Z/
Orange County Coastal Areas-
438 AM PDT Fri Apr 28 2017

...HIGH WIND WARNING IN EFFECT FROM 10 PM THIS EVENING TO 2 PM
PDT SATURDAY...

The National Weather Service in San Diego has issued a High Wind
Warning, which is in effect from 10 PM this evening to 2 PM PDT
Saturday. 

* WINDS...North to northeast winds increasing to 20 to 30 MPH
  tonight, with gusts up to 55 MPH.

* TIMING...The strongest winds will occur after midnight tonight
  through mid morning Saturday.

* LOCATION...The strongest winds in Coastal Orange County will
  occur in Southern Orange County, including Irvine, Laguna Beach,
  and San Clemente. 

* Impacts...Sudden, strong cross-winds, especially for high-profile
  vehicles. Possible tree and utility line damage. Downed palm 
  fronds. 

* OUTLOOK...Winds will diminish rapidly Saturday afternoon.

* REPORTS...Please send reports of strong winds and wind damage 
  to the National Weather Service via our Facebook and Twitter 
  feeds and online.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring.  Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

CAZ050-056-058-062-065-282100-
/O.NEW.KSGX.WI.Y.0022.170429T0500Z-170429T2100Z/
San Diego County Valleys-Riverside County Mountains-
San Diego County Mountains-San Diego County Deserts-
San Gorgonio Pass Near Banning-
Including the cities of Idyllwild-Pine Cove, Pine Valley, 
and Banning
438 AM PDT Fri Apr 28 2017

...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 2 PM PDT
SATURDAY...

The National Weather Service in San Diego has issued a Wind
Advisory, which is in effect from 10 PM this evening to 2 PM PDT
Saturday. 

* WINDS...Gusty Northeast winds developing this evening and
  becoming strong overnight with gusts of 35 to 50 mph at times.

* TIMING...Strongest winds late tonight through Saturday morning. 

* LOCATION...Strongest winds along the coastal mountain slopes,
  ridgetops, and immediately below the canyons. 

* Impacts...Sudden, strong cross-winds, especially for high-
  profile vehicles. 

* OUTLOOK...Winds will diminish rapidly Saturday afternoon.

* REPORTS...Please send reports of strong winds and wind damage 
  to the National Weather Service via our Facebook and Twitter 
  feeds and online.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

jmb

weather.gov/sandiego
4 follow-up statements
681 
WWUS76 KSGX 282022
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
122 PM PDT Fri Apr 28 2017

...Strong northeast winds tonight through Saturday...

.Surface high pressure building over the Great Basin will produce
Santa Ana winds tonight through midday Saturday. Northeast winds 
will gradually increase this evening and peak early Saturday 
morning, with strongest winds below Cajon Pass and over and just
west of the Santa Ana Mountains where northeast winds 25 to 35 
MPH with local gusts 55 to 65 MPH will occur. Moderately strong 
winds will occur in parts of the mountains and far inland valleys 
of San Diego County as well.


CAZ048-055-057-552-554-290500-
/O.CON.KSGX.HW.W.0007.170429T0500Z-170429T2100Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Santa Ana Mountains and Foothills-
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Ontario, Fontana, Rancho Cucamonga, 
Crestline, Lake Arrowhead, Big Bear Lake, Running Springs, 
and Mission Viejo
122 PM PDT Fri Apr 28 2017

...HIGH WIND WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
2 PM PDT SATURDAY...

* WINDS...North to northeast winds increasing to 25 to 35 MPH 
  tonight, with gusts from 50 to 60 MPH. Isolated gusts on 
  ridgetops and immediately below canyons up to 65 mph. 

* TIMING...The strongest winds will occur after midnight tonight
  through late morning Saturday. 

* LOCATION...Strongest winds along Interstate 15 from Cajon Pass
  to the Inland Empire and parts of inland Orange County,
  especially near the Santa Ana Mountains.

* Impacts...Sudden, strong cross-winds, especially for high- 
  profile vehicles. Possible tree and utility line damage. 
  Downed palm fronds. 

* OUTLOOK...Winds will diminish rapidly Saturday afternoon.

* REPORTS...Please send reports of strong winds and wind damage 
  to the National Weather Service via our Facebook and Twitter 
  feeds and online. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring.  Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

CAZ050-056-058-062-065-290500-
/O.CON.KSGX.WI.Y.0022.170429T0500Z-170429T2100Z/
San Diego County Valleys-Riverside County Mountains-
San Diego County Mountains-San Diego County Deserts-
San Gorgonio Pass Near Banning-
Including the cities of Idyllwild-Pine Cove, Pine Valley, 
and Banning
122 PM PDT Fri Apr 28 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
2 PM PDT SATURDAY...

* WINDS...Gusty Northeast winds 20 to 30 MPH developing overnight with
  gusts 35 to 55 mph at times. 

* TIMING...Strongest winds early morning through midday Saturday.

* LOCATION...Strongest winds along the coastal mountain slopes, 
  ridgetops, and immediately below the canyons. 

* Impacts...Sudden, strong cross-winds, especially for high- 
  profile vehicles. 

* OUTLOOK...Winds will diminish rapidly Saturday afternoon.

* REPORTS...Please send reports of strong winds and wind damage 
  to the National Weather Service via our Facebook and Twitter 
  feeds and online. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

Maxwell
341 
WWUS76 KSGX 290417
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
917 PM PDT Fri Apr 28 2017

...Strong northeast winds tonight through Saturday...

.Surface high pressure building over the Great Basin will produce
gusty Santa Ana winds tonight through midday Saturday. Northeast 
winds will strengthen tonight and peak Saturday morning. The  
strongest winds will surface below the Cajon Pass and over and 
just west of the Santa Ana Mountains where northeast winds 25 to 
35 MPH with local gusts 55 to 65 MPH will occur. Moderately strong
winds will also surface the San Diego County mountains, foothills
and the eastern valleys. 

CAZ048-055-057-552-554-291300-
/O.CON.KSGX.HW.W.0007.170429T0500Z-170429T2100Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Santa Ana Mountains and Foothills-
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Ontario, Fontana, Rancho Cucamonga, 
Crestline, Lake Arrowhead, Big Bear Lake, Running Springs, 
and Mission Viejo
917 PM PDT Fri Apr 28 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 PM PDT SATURDAY...

* WINDS...North to northeast winds increasing to 25 to 35 MPH 
  tonight, with gusts from 50 to 60 MPH. Isolated gusts on 
  ridgetops and immediately below canyons up to 65 mph. 

* TIMING...The strongest winds will occur late tonight through
  midday Saturday. 

* LOCATIONS...Strongest winds along Interstate 15 from Cajon Pass
  to the Inland Empire and parts of inland Orange County,
  especially near the Santa Ana Mountains. 

* Impacts...Sudden, strong cross-winds affecting high-profile
  vehicles. Possible tree and utility line damage. Downed palm
  fronds.  

* OUTLOOK...Winds will diminish rapidly Saturday afternoon.

* REPORTS...Please send reports of strong winds and wind damage 
  to the National Weather Service via our Facebook and Twitter 
  feeds and online. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring.  Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

CAZ050-056-058-062-065-291300-
/O.CON.KSGX.WI.Y.0022.170429T0500Z-170429T2100Z/
San Diego County Valleys-Riverside County Mountains-
San Diego County Mountains-San Diego County Deserts-
San Gorgonio Pass Near Banning-
Including the cities of Idyllwild-Pine Cove, Pine Valley, 
and Banning
917 PM PDT Fri Apr 28 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 2 PM PDT SATURDAY...

* WINDS...Gusty Northeast winds 20 to 30 MPH developing 
  overnight with gusts 35 to 55 mph at times. 

* TIMING...Strongest winds late tonight through midday Saturday.

* LOCATION...Strongest winds on the coastal mountains slopes and
  the foothills, along Interstate 10 through the San Gorgonio
  Pass, and Interstate 8 through the San Diego County Mountains. 

* Impacts...Sudden, strong cross-winds affecting high-profile
  vehicles. 

* OUTLOOK...Winds will diminish rapidly Saturday afternoon.

* REPORTS...Please send reports of strong winds and wind damage 
  to the National Weather Service via our Facebook and Twitter 
  feeds and online. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

Moede
305 
WWUS76 KSGX 291052
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
352 AM PDT Sat Apr 29 2017

...Strong gusty northeast winds this morning near the coastal
slopes of the mountains...

.Surface high pressure over the Great Basin will bring strong 
gusty northeast winds near and along the coastal slopes of the 
mountains and below passes and canyons this morning.

CAZ062-291200-
/O.CAN.KSGX.WI.Y.0022.000000T0000Z-170429T2100Z/
San Diego County Deserts-
352 AM PDT Sat Apr 29 2017

...WIND ADVISORY IS CANCELLED...

The National Weather Service in San Diego has cancelled the Wind
Advisory. 

Local north to northeast winds 15 to 25 mph with gusts to 35 mph
in the morning.

$$

CAZ048-055-057-552-554-291900-
/O.EXT.KSGX.HW.W.0007.000000T0000Z-170429T1900Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Santa Ana Mountains and Foothills-
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, Corona, Crestline, 
Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, 
Wrightwood, Huntington Beach, Costa Mesa, Santa Ana, Anaheim, 
Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo
352 AM PDT Sat Apr 29 2017

...HIGH WIND WARNING NOW IN EFFECT UNTIL NOON PDT TODAY...

* WINDS...Areas of northeast winds 20 to 30 mph with gusts to 55
  mph. Isolated gusts to 65 mph near and along coastal slopes of
  the mountains and below the Cajon Pass.

* TIMING...Strongest and most widespread winds after sunrise.
  Winds will diminish rapidly during the late morning and afternoon.
* LOCATIONS...Strongest winds near and along coastal slopes of
  the mountains and below the Cajon Pass. 

* IMPACTS...The winds will make driving difficult...especially for
  motorists with high profile vehicles. Watch for broken tree
  limbs and downed palm fronds. 

* REPORTS...Please send reports of strong winds and wind damage to
  the National Weather Service via Facebook and Twitter feeds and online.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring.  Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

CAZ050-056-058-065-291900-
/O.EXT.KSGX.WI.Y.0022.000000T0000Z-170429T1900Z/
San Diego County Valleys-Riverside County Mountains-
San Diego County Mountains-San Gorgonio Pass Near Banning-
Including the cities of Idyllwild-Pine Cove and Pine Valley
352 AM PDT Sat Apr 29 2017

...WIND ADVISORY NOW IN EFFECT UNTIL NOON PDT TODAY...

* WINDS...Areas of northeast winds 20 to 30 mph with gusts to 50
  mph. 

* TIMING...Strongest and most widespread winds after sunrise.
  Winds will diminish rapidly during the late morning and afternoon.

* LOCATION...Strongest winds near and along coastal slopes of
  the mountains. 

* IMPACTS...The winds will make driving difficult...especially for
  motorists with high profile vehicles. Watch for broken tree
  limbs and downed palm fronds. 

* REPORTS...Please send reports of strong winds and wind damage to
  the National Weather Service via Facebook and Twitter feeds and
  online.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

17
903 
WWUS76 KSGX 291855
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
1155 AM PDT Sat Apr 29 2017


CAZ048-055-057-552-554-292000-
/O.EXP.KSGX.HW.W.0007.000000T0000Z-170429T1900Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Santa Ana Mountains and Foothills-
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, Corona, Crestline, 
Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, 
Wrightwood, Huntington Beach, Costa Mesa, Santa Ana, Anaheim, 
Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo
1155 AM PDT Sat Apr 29 2017

...HIGH WIND WARNING WILL EXPIRE AT NOON PDT TODAY...

Areas of gusty northeast winds will continue along the coastal 
slopes and foothill areas through early afternoon, but will be 
below warning levels.

A peak wind gust of 70 MPH was logged at 6 AM PDT this morning at
Fremont Canyon.


$$

CAZ050-056-058-065-292000-
/O.EXP.KSGX.WI.Y.0022.000000T0000Z-170429T1900Z/
San Diego County Valleys-Riverside County Mountains-
San Diego County Mountains-San Gorgonio Pass Near Banning-
Including the cities of Idyllwild-Pine Cove and Pine Valley
1155 AM PDT Sat Apr 29 2017

...WIND ADVISORY WILL EXPIRE AT NOON PDT TODAY...

Areas of gusty northeast winds will continue along the coastal 
slopes and foothill areas through early afternoon, but will be 
below advisory level.

Sill Hill had a peak wind gust of 57 MPH at 4 AM this morning.

$$

JAD

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 4:38 AM PDTWind AdvisorySGXRiverside, San Diego31 hr

Nearby

High Wind Warnings in California, 2017Every high wind warning in 2017

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.