Alert archive / California / Wind Advisories in 2018
Wind Advisory 1, NWS San Diego, CA
NWS San Diego, CA issued this wind advisory at Jan 7, 2018, 8:15 PM PST for 4 counties in California. It took effect at Jan 9, 2018, 12:00 AM PST. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Jan 7, 2018, 8:15 PM PST (04:15 UTC)
- In effect from
- Jan 9, 2018, 12:00 AM PST
- Expired
- Jan 9, 2018, 10:52 AM PST
- In force
- 11 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 04:18 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, 4.3 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1634 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
300 WWUS76 KSGX 080415 NPWSGX URGENT - WEATHER MESSAGE National Weather Service San Diego CA 815 PM PST Sun Jan 7 2018 CAZ060>062-065-081400- /O.UPG.KSGX.HW.A.0001.180109T0000Z-180110T1200Z/ /O.NEW.KSGX.HW.W.0001.180109T0000Z-180110T1200Z/ Apple and Lucerne Valleys-Coachella Valley- San Diego County Deserts-San Gorgonio Pass Near Banning- Including the cities of Victorville, Hesperia, Apple Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, and Desert Hot Springs 815 PM PST Sun Jan 7 2018 ...HIGH WIND WARNING IN EFFECT FROM 4 PM MONDAY TO 4 AM PST WEDNESDAY... The National Weather Service in San Diego has issued a High Wind Warning...which is in effect from 4 PM Monday to 4 AM PST Wednesday. The High Wind Watch is no longer in effect. * Winds...The first significant storm of the season will bring strong winds to the SoCal deserts Monday afternoon through Tuesday night. The strongest winds will be Tuesday with gusts 55 to 75 mph along the desert slopes and immediately below the mountain passes. Elsewhere peak gusts will be 45 to 55 mph. * Visibility...Could be significantly reduced in areas of blowing dust and sand, most likely Monday afternoon and Monday night. * Impacts...Winds of this magnitude will make for difficult travel, especially for high-profile vehicles, and could cause property damage. Travelers along Interstates 10 and 15 and U.S. 395 could experience adverse conditions. 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. && $$ CAZ058-081400- /O.NEW.KSGX.HW.W.0001.180109T0000Z-180110T1200Z/ San Diego County Mountains- Including the cities of Julian and Pine Valley 815 PM PST Sun Jan 7 2018 ...HIGH WIND WARNING IN EFFECT FROM 4 PM MONDAY TO 4 AM PST WEDNESDAY... The National Weather Service in San Diego has issued a High Wind Warning...which is in effect from 4 PM Monday to 4 AM PST Wednesday. * Winds...High winds over the SoCal mountains with gusts 55 to 75 mph at times. Strongest winds will be over the crests and along the desert slopes Tuesday and Tuesday night. * Impacts...Winds of this magnitude will make for difficult travel, especially for high-profile vehicles, and could cause property damage. Travelers along Interstate 8 could experience adverse conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ CAZ043-048-050-057-552-554-081400- /O.NEW.KSGX.WI.Y.0001.180109T0600Z-180110T0000Z/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-Santa Ana Mountains and Foothills- Orange County Coastal Areas-Orange County Inland Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway, Huntington Beach, Costa Mesa, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 815 PM PST Sun Jan 7 2018 ...WIND ADVISORY IN EFFECT FROM 10 PM MONDAY TO 4 PM PST TUESDAY... The National Weather Service in San Diego has issued a Wind Advisory...which is in effect from 10 PM Monday to 4 PM PST Tuesday. * Main Impact...The first significant storm of the season will bring strong winds to Orange County, the Inland Empire, and San Diego coast and valleys Monday night through Tuesday afternoon. The strongest winds will make for a tough commute Tuesday morning with gusty southwest winds of 35 to 45 mph, which could cause isolated property damage and downed trees. * Timing...S to SW winds will become gusty Monday night. The strongest winds will be Tuesday morning between 4 and 10 AM as a very strong cold front sweeps across SoCal. Gusty W to NW winds will continue through Tuesday afternoon up to 35 mph. 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. && $$ jmb weather.gov/sandiego
5 follow-up statements
705 WWUS76 KSGX 081108 NPWSGX URGENT - WEATHER MESSAGE National Weather Service San Diego CA 308 AM PST Mon Jan 8 2018 ...PERIODS OF STRONG GUSTY WINDS FOR LATE TONIGHT INTO TUESDAY EVENING... .A Pacific low pressure system will bring periods of strong gusty winds for late tonight into Tuesday evening. Strong gusty south to southeast winds will develop in advance of the cold front late tonight...shifting to the west Tuesday morning. Winds will decrease Tuesday night. CAZ060-082230- /O.EXT.KSGX.HW.W.0001.180109T0800Z-180110T0600Z/ Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, and Apple Valley 308 AM PST Mon Jan 8 2018 ...HIGH WIND WARNING NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 10 PM PST TUESDAY... * WINDS...Areas of south winds 20 to 30 mph with gusts to 50 mph developing late tonight...becoming southwest to west with gusts to 60 mph on Tuesday with winds decreasing Tuesday night. Isolated gusts to 75 mph near the foothills of the San Bernardino County mountains on Tuesday. * IMPACTS...Difficult travel, especially for high-profile vehicles...affecting travelers along Interstate 15 and U.S. 395. Isolated property damage is possible...mainly near the foothills of the San Bernardino County mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ CAZ058-061-062-065-082230- /O.EXT.KSGX.HW.W.0001.180109T1400Z-180110T0600Z/ San Diego County Mountains-Coachella Valley- San Diego County Deserts-San Gorgonio Pass Near Banning- Including the cities of Julian, Pine Valley, Borrego Springs, Banning, and Desert Hot Springs 308 AM PST Mon Jan 8 2018 ...HIGH WIND WARNING NOW IN EFFECT FROM 6 AM TO 10 PM PST TUESDAY... * WINDS...Areas of west winds 25 to 35 mph developing Tuesday morning and continuing into Tuesday evening. Gusts to 50 mph...strengthening to 65 mph for late Tuesday morning into early Tuesday evening...then subsiding late Tuesday night. * IMPACTS...Difficult travel, especially for high-profile vehicles...affecting travelers along Interstates 8 and 10. Isolated propery damage is possible near the desert slopes of the mountains. 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. && $$ CAZ043-048-050-057-552-554-082230- /O.EXT.KSGX.WI.Y.0001.180109T0800Z-180110T0200Z/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-Santa Ana Mountains and Foothills- Orange County Coastal Areas-Orange County Inland Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway, Huntington Beach, Costa Mesa, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 308 AM PST Mon Jan 8 2018 ...WIND ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM PST TUESDAY... * WINDS...Areas of south winds developing late tonight through early Tuesday morning with winds of 15 to 25 mph...with gusts to 40 mph...and isolated gusts to 50 mph near the coast. Winds will shift to the west during the morning and continue through early evening with winds of 15 to 25 mph with gusts to 40 mph. * IMPACT...Hazardous travel for high-profile vehicles. Watch for broken tree limbs and downed palm fronds. The stronger gusts could down trees and cause isolated property damage...mainly toward daybreak Tuesday into Tuesday morning towards the coast. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. && $$ 17
504 WWUS76 KSGX 082119 NPWSGX URGENT - WEATHER MESSAGE National Weather Service San Diego CA 119 PM PST Mon Jan 8 2018 ...PERIODS OF STRONG GUSTY WINDS LATE TONIGHT INTO TUESDAY EVENING... .A Pacific storm will bring periods of strong gusty winds late tonight into Tuesday evening. Strong gusty south to southeast winds will develop in advance of the cold front late tonight...shifting to the west Tuesday morning. Winds will decrease Tuesday night. CAZ060-090600- /O.CON.KSGX.HW.W.0001.180109T0800Z-180110T0600Z/ Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, and Apple Valley 119 PM PST Mon Jan 8 2018 ...HIGH WIND WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 PM PST TUESDAY... * WINDS...Areas of south winds 20 to 30 mph with gusts to 50 mph developing late tonight...becoming southwest to west with gusts to 60 mph on Tuesday with winds decreasing Tuesday night. Isolated gusts to 75 mph near the foothills of the San Bernardino County mountains on Tuesday. * IMPACTS...Difficult travel, especially for high-profile vehicles...affecting travelers along Interstate 15 and U.S. 395. Isolated property damage is possible...mainly near the foothills of the San Bernardino County mountains. 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. && $$ CAZ058-061-062-065-090600- /O.CON.KSGX.HW.W.0001.180109T1400Z-180110T0600Z/ San Diego County Mountains-Coachella Valley- San Diego County Deserts-San Gorgonio Pass Near Banning- Including the cities of Julian, Pine Valley, Borrego Springs, Banning, and Desert Hot Springs 119 PM PST Mon Jan 8 2018 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 AM TO 10 PM PST TUESDAY... * WINDS...Areas of west winds 25 to 35 mph developing Tuesday morning and continuing into Tuesday evening. Gusts to 50 mph... strengthening to 65 mph for late Tuesday morning into early Tuesday evening...then subsiding late Tuesday night. * IMPACTS...Difficult travel, especially for high-profile vehicles...affecting travelers along Interstates 8 and 10. Isolated propery damage is possible near the desert slopes of the mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ CAZ043-048-050-057-552-554-090600- /O.CON.KSGX.WI.Y.0001.180109T0800Z-180110T0200Z/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-Santa Ana Mountains and Foothills- Orange County Coastal Areas-Orange County Inland Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway, Huntington Beach, Costa Mesa, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 119 PM PST Mon Jan 8 2018 ...WIND ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM PST TUESDAY... * WINDS...Areas of south winds developing late tonight through early Tuesday morning with winds of 15 to 25 mph...gusting to 40 mph...and isolated gusts to 50 mph near the coast. Winds will shift to the west during the morning and continue through early evening with winds of 15 to 25 mph gusting to 40 mph. * IMPACT...Hazardous travel for high-profile vehicles. Watch for broken tree limbs and downed palm fronds. The stronger gusts could down trees and cause isolated property damage...mainly toward daybreak Tuesday into Tuesday morning towards the coast. 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. && $$ 12
325 WWUS76 KSGX 090531 NPWSGX URGENT - WEATHER MESSAGE National Weather Service San Diego CA 931 PM PST Mon Jan 8 2018 ...PERIODS OF STRONG GUSTY WINDS LATE TONIGHT INTO TUESDAY EVENING... .A Pacific storm will bring periods of strong gusty winds late tonight into Tuesday evening. Strong gusty south to southeast winds will develop in advance of the cold front late tonight... shifting to the west Tuesday morning. Winds will decrease Tuesday night. CAZ060-091500- /O.CON.KSGX.HW.W.0001.180109T0800Z-180110T0600Z/ Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, and Apple Valley 931 PM PST Mon Jan 8 2018 ...HIGH WIND WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 PM PST TUESDAY... * WINDS...Areas of south winds 20 to 30 mph with gusts to 50 mph developing late tonight...becoming southwest to west with gusts to 60 mph on Tuesday with winds decreasing Tuesday night. Isolated gusts to 75 mph near the foothills of the San Bernardino County mountains on Tuesday. * IMPACTS...Difficult travel, especially for high-profile vehicles...affecting travelers along Interstate 15 and U.S. 395. Isolated property damage is possible...mainly near the foothills of the San Bernardino County mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ CAZ058-061-062-065-091500- /O.CON.KSGX.HW.W.0001.180109T1400Z-180110T0600Z/ San Diego County Mountains-Coachella Valley- San Diego County Deserts-San Gorgonio Pass Near Banning- Including the cities of Julian, Pine Valley, Borrego Springs, Banning, and Desert Hot Springs 931 PM PST Mon Jan 8 2018 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 AM TO 10 PM PST TUESDAY... * WINDS...Areas of west winds 25 to 35 mph developing Tuesday morning and continuing into Tuesday evening. Gusts to 50 mph... strengthening to 65 mph for late Tuesday morning into early Tuesday evening...then subsiding late Tuesday night. * IMPACTS...Difficult travel, especially for high-profile vehicles...affecting travelers along Interstates 8 and 10. Isolated propery damage is possible near the desert slopes of the mountains. 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. && $$ CAZ043-048-050-057-552-554-091500- /O.CON.KSGX.WI.Y.0001.180109T0800Z-180110T0200Z/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-Santa Ana Mountains and Foothills- Orange County Coastal Areas-Orange County Inland Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway, Huntington Beach, Costa Mesa, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 931 PM PST Mon Jan 8 2018 ...WIND ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM PST TUESDAY... * WINDS...Areas of south winds developing late tonight through early Tuesday morning with winds of 15 to 25 mph...gusting to 40 mph...and isolated gusts to 50 mph near the coast. Winds will shift to the west during the morning and continue through early evening with winds of 15 to 25 mph gusting to 40 mph. * IMPACT...Hazardous travel for high-profile vehicles. Watch for broken tree limbs and downed palm fronds. The stronger gusts could down trees and cause isolated property damage...mainly toward daybreak Tuesday into Tuesday morning towards the coast. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. && $$ Gregoria
229 WWUS76 KSGX 091035 NPWSGX URGENT - WEATHER MESSAGE National Weather Service San Diego CA 235 AM PST Tue Jan 9 2018 ...PERIODS OF STRONG GUSTY WINDS INTO THIS EVENING... .A Pacific storm will bring periods of strong gusty into this evening. Strong gusty south to southeast winds will develop in advance of the cold front early this morning... shifting to the west this morning. Winds will decrease tonight. CAZ060-092230- /O.CON.KSGX.HW.W.0001.000000T0000Z-180110T0600Z/ Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, and Apple Valley 235 AM PST Tue Jan 9 2018 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WINDS...Areas of south winds 20 to 30 mph with gusts to 50 mph into early this morning...becoming southwest to west with gusts to 60 mph during the morning with winds decreasing tonight. Isolated gusts to 75 mph near the foothills of the San Bernardino County mountains through this afternoon. * IMPACTS...Difficult travel, especially for high-profile vehicles...affecting travelers along Interstate 15 and U.S. 395. Isolated property damage is possible...mainly near the foothills of the San Bernardino County mountains. 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. && $$ CAZ058-061-062-065-092230- /O.CON.KSGX.HW.W.0001.180109T1400Z-180110T0600Z/ San Diego County Mountains-Coachella Valley- San Diego County Deserts-San Gorgonio Pass Near Banning- Including the cities of Julian, Pine Valley, Borrego Springs, Banning, and Desert Hot Springs 235 AM PST Tue Jan 9 2018 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 10 PM PST THIS EVENING... * WINDS...Areas of west winds 20 to 30 mph with gusts to 50 mph developing near the mountain ridge tops this morning...then strengthening to 25 to 35 mph with gusts to 60 mph and spreading into the deserts for this afternoon and early evening. Isolated gusts to 70 mph near mountain ridge tops onto the desert slopes of the mountains. Winds subsiding later tonight. * IMPACTS...Difficult travel, especially for high-profile vehicles...affecting travelers along Interstates 8 and 10. Isolated property damage is possible near the desert slopes of the mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ CAZ043-048-050-057-552-554-092230- /O.CON.KSGX.WI.Y.0001.000000T0000Z-180110T0200Z/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-Santa Ana Mountains and Foothills- Orange County Coastal Areas-Orange County Inland Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway, Huntington Beach, Costa Mesa, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 235 AM PST Tue Jan 9 2018 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * WINDS...Areas of south to southeast winds strengthening early this morning with winds of 15 to 25 mph with gusts to 40 mph, Winds becoming southwest to west during the morning and continuing through the afternoon with gusts to 35 mph. For early this morning...winds will be stronger near the coast with winds of 20 to 30 mph with gusts to 50 mph. Isolated gusts to 60 mph are possible for a brief time with the cold front. * TIMING...The cold front is expected to reach the northern Orange County coast around 7 AM...the northern San Diego coast by 8 AM...and the far southern San Diego County coast around 9 AM. The strongest winds are expected along and just ahead of the front. * IMPACT...Hazardous travel for high-profile vehicles. Watch for broken tree limbs and downed palm fronds. The stronger gusts could down trees and cause isolated property damage...mainly toward early this morning towards the coast. 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. && $$ 17
835 WWUS76 KSGX 091852 NPWSGX URGENT - WEATHER MESSAGE National Weather Service San Diego CA 1052 AM PST Tue Jan 9 2018 CAZ060-092000- /O.CAN.KSGX.HW.W.0001.000000T0000Z-180110T0600Z/ Apple and Lucerne Valleys- 1052 AM PST Tue Jan 9 2018 ...HIGH WIND WARNING IS CANCELLED... The National Weather Service in San Diego has cancelled the High Wind Warning. High winds are no longer expected. Please see LAXPNSSGX for a summary of highest wind gusts today. $$ CAZ043-048-050-057-552-554-092000- /O.CAN.KSGX.WI.Y.0001.000000T0000Z-180110T0200Z/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-Santa Ana Mountains and Foothills- Orange County Coastal Areas-Orange County Inland Areas- 1052 AM PST Tue Jan 9 2018 ...WIND ADVISORY IS CANCELLED... The National Weather Service in San Diego has cancelled the Wind Advisory. Advisory strength winds are no longer expected. Please see LAXPNSSGX for a summary of highest wind gusts today. $$ CAZ058-061-062-065-100300- /O.CON.KSGX.HW.W.0001.000000T0000Z-180110T0600Z/ San Diego County Mountains-Coachella Valley- San Diego County Deserts-San Gorgonio Pass Near Banning- Including the cities of Julian, Pine Valley, Borrego Springs, Banning, and Desert Hot Springs 1052 AM PST Tue Jan 9 2018 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WINDS...Areas of west winds 30 to 40 mph with gusts to 60 mph near the mountain ridge tops and spreading into the deserts this afternoon and early evening. Isolated gusts to 65 mph near mountain ridge tops onto the desert slopes of the mountains. Winds subsiding later tonight. * IMPACTS...Difficult travel, especially for high-profile vehicles...affecting travelers along Interstates 8 and 10. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ JAD
What forecasters said that day
The local office's own words before this wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Diego, CA wrote its last area forecast discussion before this wind advisory went out at Jan 7, 2:03 PM PST, 6 hours 12 minutes earlier.
Area forecast discussion, Jan 7, 2:03 PM PST, 6 hours 12 minutes before
Area Forecast Discussion
National Weather Service San Diego CA
203 PM PST Sun Jan 7 2018
.SYNOPSIS...
Cooler Monday as clouds thicken, winds increase and a few light
showers break out. Then on Tuesday a winter storm will bring
widespread rain, strong winds, and high elevation mountain snow. The
storm will clear the area on Wednesday, followed by fair, dry and
warmer weather for the remainder of the week.
&&
.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
Satellite imagery this afternoon shows patchy high clouds drifting
NE
over lower stratus just offshore. The balance of the afternoon looks
pleasant with fair skies, light winds and mild temperatures. some of
fog could return overnight, depending on how quickly the higher
clouds thicken from the southwest. There is a chance for a few
light, scattered showers to break out late tonight but most of our
rain will come after midnight Monday night.
The disturbance that will produce the first winter storm of the
season for SoCal is about 900 miles west of Cape Mendocino today. It
will drop SE through Monday and wrap up a strong low pressure center
just west of San Francisco Tuesday morning. The storm will continue
to drop SE to position over eastern AZ through early Wednesday.
Ahead of the main low, a cutoff system about 1000 miles SW of San
Diego will be drawn rapidly NE and weaken, arriving here Mon
morning. It will tap some subtropical moisture and moisten up the
mid/upper atmosphere, clouding us over and possibly producing some
scattered, intermittent, light rain showers on Monday. The heaviest
precipitation and wind will move through on Tue/Tue night as the
core of the storm system moves overhead. Conditions improve on
Wednesday and then we are back to ridging aloft, offshore flow, fair
skies, and above average temperatures for the remainder of the week.
See the various Watches currently in effect for specifics on
potentially impactful/hazardous weather. A QPF/Hydrology discussion
below goes into depth on precipitation and possible flooding
concerns.
Tonight...High clouds thicken with some areas of fog still possible
over coastal areas. A few sprinkles could break out before dawn.
Monday...Cooler and cloudy with increasing S-SE winds and scattered,
light showers possible at times. Amounts should be very light.
Monday Night...Southerly winds increase and precipitation becomes
steady on the south-facing slopes to the crest of the San Bernardino
Mts. Only scattered, light precip elsewhere.
Tuesday...a strong cold front sweeps through the CWA during the
morning commute, accompanied by strong south winds shifting west,
and heavy rain and possible thunderstorms. Rainfall becomes more
showery in the afternoon with more steady accumulations on the
coastal slopes of the Riverside and San Diego County Mts. Snow-
levels fall to resort levels with some light accumulations possible.
Tuesday night...showers increase after midnight as a second wave of
instability sweeps inland across mainly southern areas of the CWA.
Thunderstorms possible in the cold, unstable air.
&&
.QPF/Hydrology...
This system will have Atmospheric moisture values of 1.2 to 1.4
inch drawn in ahead of the cold front. This amount of moisture
combined with strong lift and instability near the cold front will
likley produce 15-30 minute rainfall rates of one-half to one
inch/hour on Tuesday morning. Rainfall totals overall will be
limited by the speed of this system at lower elevations, however on
the coastal slopes of the San Bernardino Mts, a prolonged period of
upslope flow preceding the storm will allow for much greater storm
totals.
Preliminary rainfall totals are for 3-6 inches on the slopes of the
San Bernardino Mts, with 1.5 to 3 inches for the coastal slopes of
the other mts. Across the coastal basin...Orange County/Inland
Empire could see 1 to 1.5 inches, with 0.75 to 1.50 inches estimated
for western San Diego County. For the deserts...0.25 to locally 1
inch is possible, biggest amounts over the high deserts or near
thunderstorms. For snowfall...some heavy snowfall is possible on the
highest mtn peaks, but below to around 5000 FT, it will mainly be
convective showers behind the front that provide any accumulation.
This makes it more difficult to estimate, but several inches are not
out of the question at some resorts in the San Bernardino and
Riverside County Mts, which could result in some travel impacts,
especially with the gusty winds.
Rainfall rates with the cold front, and in convective cells in the
cold, unstable air behind the front through Tue night will be
sufficient to produce debris flows near the fresh burn scars in
Orange and western Riverside Counties, with greatest threat below
more steeply sloped areas. Less impact is expected for the Lilac
burn due to modest terrain influence, and in the older burn scars in
San Diego County. Urban flooding is also likely in areas with
poor drainage due to the high rainfall rates.
Main stem river flooding is not expected. However, the San Diego
River will likley respond quickly to the heavy rainfall accompanying
the front Tuesday morning. Flow in the river is likely to rise
rapidly on Tuesday from around 2 feet, to 6 or 7 feet at the Fashion
Valley gage. This may send an inch or two of water over the lowest
water crossings in Fashion Valley for a time, but provided there are
no impediments to flow and rainfall does not greatly exceed
guidance, the discharge will remain in the channel.
&&
.AVIATION...
072110Z...Coast...A few low clouds remain at the beaches this
afternoon with bases around 500 ft MSL. Impacts at coastal TAF sites
are unlikely before 00Z Monday. Low clouds/fog may return to the
coastal TAF sites after 00Z Monday, with bases 400-900 ft MSL. The
low clouds/fog could spread 5-10 miles inland by 14Z Monday but the
timing of impacts at TAF sites is uncertain. Expect clearing by 16Z
Monday.
Valleys/Mountains/Deserts...SCT-BKN AOA 15,000 ft MSL with
unrestricted visibility and light winds through 12Z Monday.
&&
.MARINE...
A shallow marine layer will result in patchy fog over the coastal
waters tonight into Monday morning. Visibility may be reduced to 1
NM or less at times.
A Pacific Storm will move through the SoCal Bight Monday night
through Tuesday night. Strongest winds are expected early Tuesday
morning through Tuesday evening, with a frontal passage Tuesday
morning. Strong squalls and/or thunderstorms are possible all day on
Tuesday. Combined seas may reach 8-12 ft Tuesday afternoon through
Tuesday night, and rough seas are likely.
&&
.BEACHES...
A short-period 5-10 ft swell from 285 degrees is expected to arrive
at the beaches on Tuesday, peak Wednesday, then slowly fade on
Thursday. High surf and strong rip currents will be possible at the
Beaches during this period. Surf may remain elevated into next
weekend with continued northwest swell.
&&
.SKYWARN...
Skywarn activation will likely be requested for this storm.
&&
.SGX WATCHES/WARNINGS/ADVISORIES...
CA...High Wind Watch from Monday afternoon through late Tuesday night
for Apple and Lucerne Valleys-Coachella Valley-San Diego
County Deserts-San Gorgonio Pass Near Banning.
Winter Storm Watch from Monday afternoon through late Tuesday
night for Riverside County Mountains-San Bernardino County
Mountains-San Diego County Mountains.
Flash Flood Watch from late Monday night through Tuesday evening
for Orange County Inland Areas-San Bernardino and Riverside
County Valleys-The Inland Empire-San Gorgonio Pass Near
Banning-Santa Ana Mountains and Foothills.
PZ...Small Craft Advisory from 10 PM Monday to 1 AM PST Wednesday for
Coastal Waters from San Mateo Point to the Mexican Border
and out to 30 nm-Waters from San Mateo point to the Mexican
Border Extending 30 to 60 nm out including San Clemente
Island.
&&
PUBLIC/HYDROLOGY...JAD
AVIATION/MARINE/BEACHES...PGThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 7, 6:49 PM PST | Winter Storm Warning | SGX | Riverside, San Bernardino | 51 hr |
| Jan 7, 8:15 PM PST | High Wind Warning | SGX | Riverside, San Bernardino, San Diego | 48 hr |
| Jan 8, 2:02 AM PST | Gale Watch | SGX | 12 hr | |
| Jan 8, 2:02 AM PST | Small Craft Advisory | SGX | 59 hr | |
| Jan 8, 1:37 PM PST | High Surf Advisory | SGX | Orange, San Diego | 52 hr |
| Jan 8, 1:45 PM PST | Gale Warning | SGX | 20 hr |
Nearby
Wind Advisories in California, 2018Every wind advisory in 2018
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.