Alert archive / California / Flash Flood Watches in 2020
Flash Flood Watch 2, NWS San Diego, CA
NWS San Diego, CA issued this flash flood watch at Apr 6, 2020, 1:02 PM PDT for 4 counties in California. It took effect at Apr 7, 2020, 11:00 AM PDT. It was in force for 3 days.
The area
The counties it named.
The facts
- Issued
- Apr 6, 2020, 1:02 PM PDT (20:02 UTC)
- In effect from
- Apr 7, 2020, 11:00 AM PDT
- Expired
- Apr 10, 2020, 8:00 PM PDT
- In force
- 3 days
- Issued by
- NWS San Diego, CA
- Flood severity
- None
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 20:05 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 12:00Z, 8.0 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
- 18 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 530 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
086 WGUS66 KSGX 062002 FFASGX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 102 PM PDT Mon Apr 6 2020 ...Flash Flood Watch Tuesday through Wednesday... .A slow-moving storm off the central California coast will approach southern California and move inland late Tuesday through Wednesday. With high moisture availability and increasing instability, the threat for thunderstorms and heavy showers will bring areas of urban and small stream flooding, with isolated flash flooding possible as well from the coast to the desert areas. CAZ043-048-050-055>058-060>062-065-552-554-070500- /O.NEW.KSGX.FF.A.0002.200407T1800Z-200409T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 102 PM PDT Mon Apr 6 2020 ...FLASH FLOOD WATCH IN EFFECT FROM TUESDAY MORNING THROUGH WEDNESDAY EVENING... The National Weather Service in San Diego has issued a * Flash Flood Watch for a portion of southwest California... including the following...Apple and ...Lucerne Valleys... Coachella Valley...Orange County Coastal Areas...Orange County Inland Areas...Riverside County Mountains...San Bernardino County Mountains...San Bernardino and Riverside County Valleys- The Inland Empire...San Diego County Coastal Areas... San Diego County Deserts...San Diego County Mountains...San Diego County Valleys...San Gorgonio Pass Near Banning and Santa Ana Mountains and Foothills. * A cold, late season storm will bring an elevated risk of heavy rain and flash flooding * From late Tuesday morning through Wednesday evening * There is a potential for thunderstorms and areas of heavy slow- moving showers to develop. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 10
14 follow-up statements
164 WGUS66 KSGX 070333 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 833 PM PDT Mon Apr 6 2020 ...Flash Flood Watch Tuesday through Wednesday... .A slow-moving storm off the central California coast will move inland across Southern California Tuesday and Wednesday. Scattered showers and isolated thunderstorms with the moderate to heavy rain will bring areas of urban and small stream flooding. Isolated flash flooding is possible in the heaviest downpours. CAZ043-048-050-055>058-060>062-065-552-554-071300- /O.CON.KSGX.FF.A.0002.200407T1800Z-200409T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 833 PM PDT Mon Apr 6 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * A portion of southwest California...including the Apple and Lucerne Valleys...the Coachella Valley...all of Orange County...the Riverside County Mountains...the San Bernardino County Mountains...the Inland Empire...and all of San Diego County. * From late Tuesday morning through Wednesday evening * There is the threat for showers and thunderstorms with heavy rain. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Moede
834 WGUS66 KSGX 070919 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 219 AM PDT Tue Apr 7 2020 ...Flash Flood Watch Tuesday through Wednesday... .A slow-moving low pressure system southwest of Point Conception will move slowly toward the southeast and east moving inland across Southern California on Wednesday. Scattered showers and isolated thunderstorms with moderate to heavy rainfall will bring areas of urban and small stream flooding. Isolated flash flooding is possible in the heaviest downpours. CAZ043-048-050-055>058-060>062-065-552-554-072200- /O.CON.KSGX.FF.A.0002.200407T1800Z-200409T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 219 AM PDT Tue Apr 7 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 11 AM PDT THIS MORNING THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * All of extreme southwestern California below the snow level. * From 11 AM PDT this morning through Wednesday evening * There is the threat for showers and thunderstorms with heavy rainfall. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 17
375 WGUS66 KSGX 072039 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 139 PM PDT Tue Apr 7 2020 ...Flash Flood Watch Tuesday through Wednesday... .A slow-moving low pressure system southwest of Point Conception will move slowly toward the southeast and east moving inland across Southern California on Wednesday. Scattered showers and isolated thunderstorms with moderate to heavy rainfall will bring areas of urban and small stream flooding. Isolated flash flooding is possible in the heaviest downpours. CAZ043-048-050-055>058-060>062-065-552-554-080445- /O.CON.KSGX.FF.A.0002.000000T0000Z-200409T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 139 PM PDT Tue Apr 7 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * A portion of southwest California...including the following... Apple and ...Lucerne Valleys...Coachella Valley...Orange County Coastal Areas...Orange County Inland Areas...Riverside County Mountains...San Bernardino County Mountains...San Bernardino and Riverside County Valleys-The Inland Empire... San Diego County Coastal Areas...San Diego County Deserts... San Diego County Mountains...San Diego County Valleys...San Gorgonio Pass Near Banning and Santa Ana Mountains and Foothills. * through Wednesday evening * There is the threat for showers and thunderstorms with heavy rainfall. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ SS
772 WGUS66 KSGX 080412 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 912 PM PDT Tue Apr 7 2020 ...Flash Flood Watch through Wednesday... .A slow-moving trough of low pressure will slowly move across Southern California Wednesday. Scattered showers and isolated thunderstorms with moderate to heavy rainfall are likely. Isolated flash flooding is possible in the heaviest downpours. CAZ043-048-050-055>058-060>062-065-552-554-081300- /O.CON.KSGX.FF.A.0002.000000T0000Z-200409T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 912 PM PDT Tue Apr 7 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * A portion of southwest California...including the Apple and Lucerne Valleys...the Coachella Valley...all of Orange County...the Riverside County Mountains...the San Bernardino County Mountains...the Inland Empire...and all of San Diego County. * Through Wednesday evening * Scattered showers and thunderstorms with heavy rainfall. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Moede
224 WGUS66 KSGX 081001 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 301 AM PDT Wed Apr 8 2020 ...FLASH FLOOD WATCH THROUGH 7 PM TODAY BELOW 5000 FEET... .A low pressure system will nove slowly toward the southern California coast today. This will bring numerous showers today with a chance of thunderstorms with periods of heavy rainfall possible. Isolated flash flooding is possible with thunderstorms and where showers track repeatedly across the same area. CAZ043-048-050-055>058-060>062-065-552-554-082245- /O.CON.KSGX.FF.A.0002.000000T0000Z-200409T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 301 AM PDT Wed Apr 8 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flash Flood Watch continues for * All of extreme southwestern California below 5000 feet. * Through 7 PM today. * Numerous showers and a chance of thunderstorms with periods of heavy rainfall possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 17
089 WGUS66 KSGX 082014 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 114 PM PDT Wed Apr 8 2020 ...FLASH FLOOD WATCH THROUGH 7 PM TODAY BELOW 5000 FEET... .A low pressure system will nove slowly across the California Bight today. This will bring numerous showers today with a chance of thunderstorms with periods of heavy rainfall possible. Isolated flash flooding is possible with thunderstorms and where showers track repeatedly across the same area. CAZ043-048-050-055>058-060>062-065-552-554-090200- /O.CON.KSGX.FF.A.0002.000000T0000Z-200409T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 114 PM PDT Wed Apr 8 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING... The Flash Flood Watch continues for * A portion of southwest California...including the following... Apple and ...Lucerne Valleys...Coachella Valley...Orange County Coastal Areas...Orange County Inland Areas...Riverside County Mountains...San Bernardino County Mountains...San Bernardino and Riverside County Valleys-The Inland Empire... San Diego County Coastal Areas...San Diego County Deserts... San Diego County Mountains...San Diego County Valleys...San Gorgonio Pass Near Banning and Santa Ana Mountains and Foothills. * until 7 PM PDT this evening * Numerous showers and a chance of thunderstorms with periods of heavy rainfall possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ SS
454 WGUS66 KSGX 090202 FFASGX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 702 PM PDT Wed Apr 8 2020 ...Flash Flood Watch has been extended through Friday... .A low pressure system will move slowly across the region Thursday through Friday. This will bring a renewed round of potentially heavy rain, especially from Thursday evening through Friday morning. Isolated flash flooding will be possible, as well as significant urbanized flooding. CAZ043-048-050-055>058-060>062-065-552-554-091015- /O.EXT.KSGX.FF.A.0002.000000T0000Z-200411T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 702 PM PDT Wed Apr 8 2020 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH FRIDAY AFTERNOON... The Flash Flood Watch is now in effect for * A portion of southwest California...including the following... Apple and ...Lucerne Valleys...Coachella Valley...Orange County Coastal Areas...Orange County Inland Areas...Riverside County Mountains...San Bernardino County Mountains...San Bernardino and Riverside County Valleys-The Inland Empire... San Diego County Coastal Areas...San Diego County Deserts... San Diego County Mountains...San Diego County Valleys...San Gorgonio Pass Near Banning and Santa Ana Mountains and Foothills. * through Friday afternoon * Numerous showers with periods of heavy rainfall, especially for Thursday evening through Friday morning. Thunderstorms also possible late Thursday night and Friday. * Additional heavy rainfall on already soaked ground could cause renewed flooding problems for much of the area. Additional amounts of 1 to 2 inches, with isolated totals of 3 inches along the coastal slopes. Deserts will see between one half to one inch additional. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ jmb
786 WGUS66 KSGX 090405 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 905 PM PDT Wed Apr 8 2020 ...Flash Flood Watch has been extended through Friday... .A low pressure system will move slowly across the region Thursday through Friday. This will bring a renewed round of potentially heavy rainfall, especially from Thursday evening through Friday morning. Isolated flash flooding will be possible, as well as significant urbanized flooding risk. CAZ043-048-050-055>058-060>062-065-552-554-091300- /O.CON.KSGX.FF.A.0002.000000T0000Z-200411T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 905 PM PDT Wed Apr 8 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... The Flash Flood Watch continues for * A portion of southwest California...including the following... Apple and ...Lucerne Valleys...Coachella Valley...Orange County Coastal Areas...Orange County Inland Areas...Riverside County Mountains...San Bernardino County Mountains...San Bernardino and Riverside County Valleys-The Inland Empire... San Diego County Coastal Areas...San Diego County Deserts... San Diego County Mountains...San Diego County Valleys...San Gorgonio Pass Near Banning and Santa Ana Mountains and Foothills. * through Friday afternoon * Numerous showers through Friday. The main threat for heavy rainfall will come from Thursday evening through Friday morning. Thunderstorms also possible late Thursday night and Friday. * Additional heavy rainfall on already soaked ground could cause renewed flooding problems for much of the area. Additional amounts of 1 to 2 inches, with isolated spots along the coastal slopes of up to 3 inches. For the deserts around one-half inch additional rainfall, with a few spots up to one inch. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ jmb
011 WGUS66 KSGX 090939 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 239 AM PDT Thu Apr 9 2020 CAZ043-048-050-055>058-060>062-065-552-554-092230- /O.CON.KSGX.FF.A.0002.000000T0000Z-200411T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 239 AM PDT Thu Apr 9 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... The Flash Flood Watch continues for * All of extreme southwestern California below 5500 feet. * Through Friday afternoon. * Periods of showers will continue through Friday along with a slight chance for thunderstorms Friday afternoon. * Brief heavy rainfall on saturated soil will increase the potential for urban and small stream flooding. Isolated flash flooding is possible with thunderstorms and where showers track repeatedly across the same area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 17
650 WGUS66 KSGX 092000 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA Issued by National Weather Service San Francisco CA 100 PM PDT Thu Apr 9 2020 CAZ043-048-050-055>058-060>062-065-552-554-100500- /O.CON.KSGX.FF.A.0002.000000T0000Z-200411T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 100 PM PDT Thu Apr 9 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... The Flash Flood Watch continues for * All of extreme southwestern California below 5500 feet. * Through Friday afternoon. * Periods of showers will continue through Friday along with a slight chance for thunderstorms Friday afternoon. * Brief heavy rainfall on saturated soil will increase the potential for urban and small stream flooding. Isolated flash flooding is possible with thunderstorms and where showers track repeatedly across the same area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
915 WGUS66 KSGX 100448 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 948 PM PDT Thu Apr 9 2020 CAZ043-048-050-055>058-060>062-065-552-554-101300- /O.CON.KSGX.FF.A.0002.000000T0000Z-200411T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 948 PM PDT Thu Apr 9 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... The Flash Flood Watch continues for * A portion of southwest California...including the following... Apple and ...Lucerne Valleys...Coachella Valley...Orange County Coastal Areas...Orange County Inland Areas...Riverside County Mountains...San Bernardino County Mountains...San Bernardino and Riverside County Valleys-The Inland Empire... San Diego County Coastal Areas...San Diego County Deserts... San Diego County Mountains...San Diego County Valleys...San Gorgonio Pass Near Banning and Santa Ana Mountains and Foothills. * through Friday afternoon * Showers will continue through Friday along with a slight chance for thunderstorms on Friday. * Heavy rainfall is expected over saturated soil, which will increase the potential for significant urbanized flooding. Isolated flash flooding is also possible with thunderstorms on Friday, and where showers track repeatedly across the same area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ jmb
810 WGUS66 KSGX 101030 FFASGX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 330 AM PDT Fri Apr 10 2020 CAZ043-048-050-055>058-060>062-065-552-554-102230- /O.EXT.KSGX.FF.A.0002.000000T0000Z-200411T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 330 AM PDT Fri Apr 10 2020 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH THIS EVENING... The Flash Flood Watch is now in effect for * All of extreme southwestern California below 5500 feet. * Until 8 PM this evening. * Showers with widespread moderate to locally heavy rainfall will continue today below 5500 feet along with a chance of thunderstorms. The heaviest rainfall is expected across San Diego County. * Heavy rainfall is expected over saturated soil, which will increase the potential for significant urbanized and flooding stream flooding, especially across San Diego County. Isolated flash flooding is also possible with thunderstorms and where showers track repeatedly across the same area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 17
362 WGUS66 KSGX 102051 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 151 PM PDT Fri Apr 10 2020 CAZ043-048-050-055>058-060>062-065-552-554-110300- /O.CON.KSGX.FF.A.0002.000000T0000Z-200411T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 151 PM PDT Fri Apr 10 2020 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... The Flash Flood Watch continues for * A portion of southwest California...including the following... Apple and ...Lucerne Valleys...Coachella Valley...Orange County Coastal Areas...Orange County Inland Areas...Riverside County Mountains...San Bernardino County Mountains...San Bernardino and Riverside County Valleys-The Inland Empire... San Diego County Coastal Areas...San Diego County Deserts... San Diego County Mountains...San Diego County Valleys...San Gorgonio Pass Near Banning and Santa Ana Mountains and Foothills. * until 8 PM PDT this evening * Showers with widespread moderate to locally heavy rainfall will continue today below 5500 feet along with a chance of thunderstorms. The heaviest rainfall is expected across San Diego County. * Heavy rainfall is expected over saturated soil, which will increase the potential for significant urbanized and flooding stream flooding, especially across San Diego County. Isolated flash flooding is also possible with thunderstorms and where showers track repeatedly across the same area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 10
716 WGUS66 KSGX 110321 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE San Diego CA 821 PM PDT Fri Apr 10 2020 CAZ043-048-050-055>058-060>062-065-552-554-110430- /O.EXP.KSGX.FF.A.0002.000000T0000Z-200411T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-San Bernardino County Mountains- Riverside County Mountains-Santa Ana Mountains and Foothills- San Diego County Mountains-Apple and Lucerne Valleys- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Oceanside, 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, Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 821 PM PDT Fri Apr 10 2020 ...FLASH FLOOD WATCH HAS EXPIRED... The Flash Flood Watch for A portion of southwest California has expired. Additional flooding is no longer expected to pose a threat, however officials are reporting ongoing flooding problems in the Encinitas area, and there may still be flooded streets in other areas. Please continue to heed any remaining road closures. $$ jmb
What forecasters said that day
The local office's own words before this flash flood watch 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 flash flood watch went out at Apr 6, 8:48 AM PDT, 4 hours 14 minutes earlier.
Area forecast discussion, Apr 6, 8:48 AM PDT, 4 hours 14 minutes before
Area Forecast Discussion
National Weather Service San Diego CA
848 AM PDT Mon Apr 6 2020
.SYNOPSIS...
A cold low pressure system off the central California coast will
move slowly southward through Tuesday, then swing east over Southern
California on Wednesday. It will keep the weather quite cool for
early April, and bring periods of rain, mountain snow, and isolated
thunderstorms through Thursday. The low may spin over the region
through Friday, continuing the threat of rain and mountains
snowfall. The storm system should be east of the region this
weekend, setting up dry and warmer weather.
&&
.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
Scattered, mostly light rain has fallen over most areas along and
west of the mts this morning, By far, the heaviest has been on the
coastal slopes of the San Bernardino and Santa Ana Mts, where an
inch or more has fallen in some spots. Snow is falling with some
accumulating above 6200 FT, and could be heavy above 6500 FT. The
onshore sfc pressure gradients have relaxed a bit, but peak wind
gusts are still 45-55 MPH in the windiest spots.
Looks like snow levels may remain elevated (mostly above 6200 FT)
today, then gradually fall off over western areas tonight. This
should keep any heavy accumulations of snow above 6500 FT today and
above 6000 FT tonight and Tuesday. Tuesday night and Wednesday,
further drops in the snow level are likely. A minor forecast update
was issued to raise snow levels in the near term, and add
thunderstorm chances to more zones later Tue/Wed.
Previous discussion...
A closed upper level low pressure system is centered off the
northern and central California coast early this morning with a
plume of subtropical moisture with precipitable water values
exceeding one inch directed into southern California. There have
been scattered showers overnight along and west of the mountains
with the more widespread precipitation from Los Angeles County
westward.
Stronger and gusty south to southwest winds ahead of the cold
front for this morning into this afternoon will gust to around 35
mph near the coast and gust to around 50 mph near mountain ridge
tops and desert mountains slopes. Winds will gradually subside
tonight into Tuesday.
Periods of showers will continue behind the front for tonight into
Thursday along with a slight chance for thunderstorms for Tuesday
afternoon and evening and again on Wednesday.
This low pressure system could linger in vicinity of southern
California for Friday into the weekend which would maintain below
average temperatures with small chances for mainly light
precipitation.
&&
.AVIATION...
061530Z...Coast/Valleys/Mountains...Heaviest rainfall will impact
KSNA/KONT/KSBD/KSNA through 20Z. After 20, it will shift east of
these areas and impact KCRQ/KSAN. Expect periods of MVFR ceilings
(1000-1500 ft MSL) and visibilities of 1-4SM in the heavier
rainfall. Outside of the heaviest rain expect BKN ceilings 2500-3500
ft MSL along with VCSH. Higher terrain mostly obscured. A slight
chance of TSRA afternoon and evening, but too low of a probability
to mention in the TAFs. A few hours of strong south wind gusts
expected at KSAN until front passes with gusts to 30 kts possible 16-
19Z. Winds along mountain crests and desert slopes 25-35 kts, gusts
to 45 kts. For all areas, expect the precip to become more showery
in nature after 04Z. During this period and through the overnight
hours expect scattered -SHRA and cigs 2000-3000 feet MSL.
Deserts...Rain occurring in the high desert and expect -RA to begin
in the lower deserts early afternoon. Expect ceilings down to 4000
feet MSL and local vis 3-5SM in +RA between 16-23Z high desert, 20-
03Z low desert. SFC winds in high desert gusting 25-35 kts,
decreasing after 23Z.
&&
.MARINE...
Strong southerly winds with gusts 20 to 30 knots today. There is
also a small chance of thunderstorms and waterspouts this afternoon
through tonight. Scattered thunderstorms become more likely for Tue
night into Wednesday. A Small Craft Advisory is in effect until
early this evening.
&&
.BEACHES...
Isolated thunderstorms with lightning possible this afternoon and
again Tuesday afternoon through Wednesday. Elevated surf through
this evening with sets up to 6 feet possible.
&&
.HYDROLOGY...
A low pressure system off the northern and central California
coast will move slowly southward through Tuesday, then slowly
eastward and inland across southern California and northern Baja
for Wednesday and Wednesday night. It will bring periods of heavy
precipitation today with periods of showers following for tonight
through Thursday.
The more widespread precipitation will continue this morning along
south facing mountain slopes with the cold front and more
widespread showers moving slowly east and southward across the
areas during the afternoon into the evening. There is a slight
chance of thunderstorms with the front, mainly for coastal and
valley areas from late morning into the afternoon.
Periods of showers will continue into Thursday. There is another
chance for thunderstorms Tuesday afternoon and evening and another
chance for Wednesday morning into the afternoon.
Through Thursday for Orange, southwestern San Bernardino, and
western Riverside Counties, rainfall is expected to range from 1.5
to 2 inches near the coast to 4 to 6 inches on south facing
mountains slopes with locally greater amounts to around 8 inches.
In high desert areas, 1 to 2 inches of rainfall is expected with
0.75 to 1.5 inches in the Coachella Valley.
For San Diego County, rainfall is expected to range from around 2
inches near the coast to 3 to 5 inches in the mountains with
around one half to one inch in the deserts. Local amounts to
around 6 inches are possible on southwest facing mountain slopes.
Snow levels near the 5500 to 6000 feet today, will lower to 4500
to 5000 feet for tonight through Wednesday, gradually rising to
5000 to 5500 feet Wednesday night, and 6000 to 6500 feet Thursday.
Through Wednesday evening in the mountains of San Bernardino and
Riverside Counties, total snow accumulations could range from 6
to 10 inches between 5,000 and 6,000 feet, 10 to 20 inches between
6,000 and 7,000 feet, and from 20 to 36 inches above 7,000 feet
with local amounts up to 48 inches on the highest peaks. The San
Diego County mountains could receive 3 to 6 inches above 5000
feet, mainly Tuesday night and Wednesday.
Urban and small stream flooding will be a possible for most areas
below the snow level. The greater potential for flash flooding
would be on Tuesday into Tuesday evening and again Wednesday with
thunderstorms or bands of showers training across the same areas.
There could also be flooding of low water crossings along the San
Diego River through Mission Valley. The Whitewater River could
flood low water crossings in the Coachella Valley.
&&
.SKYWARN...
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.
&&
.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Winter Storm Warning until 5 AM PDT Thursday for Riverside
County Mountains-San Bernardino County Mountains.
PZ...Small Craft Advisory until 6 PM PDT this evening 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...10/17
HYDROLOGY...17
AVIATION/MARINE/BEACHES...MorelandIn the hours before
Local storm report, Apr 6, 11:46 AM PDT, 1 hour 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1146 AM PDT MON APR 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1144 AM HEAVY RAIN 7 SW CORONA 33.81N 117.67W
04/06/2020 M0.88 INCH ORANGE CA TRAINED SPOTTER
0.88 INCHES IN ONE HOUR IN SILVERADO CANYON
ON 2 GAGES. WEATHER SPOTTER REPORTING
INTENSE RAINFALL. SPOTTER REPORTS 1.91 NEW
RAINFALL.
&&
AOTLocal storm report, Apr 6, 11:53 AM PDT, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1153 AM PDT MON APR 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1127 AM HEAVY RAIN 1 N SAN BERNARDINO 34.11N 117.29W
04/06/2020 M1.00 INCH SAN BERNARDINO CA TRAINED SPOTTER
STREET FLOODING.
&&
AOTLocal storm report, Apr 6, 11:54 AM PDT, 1 hour 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1154 AM PDT MON APR 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1107 AM HEAVY RAIN 2 NW SAN JUAN CAPISTRAN 33.53N 117.67W
04/06/2020 E1.00 INCH ORANGE CA TRAINED SPOTTER
NEAR 1 INCH IN 20 MINUTES. FLOODING IN SAN
JUAN CAPISTRANO.
&&
AOTLocal storm report, Apr 6, 11:55 AM PDT, 1 hour 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1155 AM PDT MON APR 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1137 AM HEAVY RAIN 3 W SAN JUAN CAPISTRANO 33.51N 117.70W
04/06/2020 M0.96 INCH ORANGE CA TRAINED SPOTTER
0.96 INCHES IN THE PRIOR 50 MINUTES.
&&
AOTLocal storm report, Apr 6, 12:42 PM PDT, 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1242 PM PDT MON APR 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1241 PM HEAVY RAIN 2 NW SAN JUAN CAPISTRAN 33.52N 117.67W
04/06/2020 M0.94 INCH ORANGE CA PUBLIC
LOWER OSO CREEK GAUGE REPORTED 0.94 INCHES
IN 1 HOUR.
&&
AOTLocal storm report, Apr 6, 12:59 PM PDT, 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1259 PM PDT MON APR 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1258 PM HEAVY RAIN 2 NNW LYTLE CREEK 34.28N 117.50W
04/06/2020 M4.00 INCH SAN BERNARDINO CA MESONET
GAUGE REPORTS 4 INCHES IN 12 HOURS AND 3
INCHES IN 6 HOURS DURATION.
&&
AOTThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 8:07 AM PDT | Areal Flood Advisory | SGX | Orange, Riverside, San Bernardino | 3 hr |
| Apr 6, 10:23 AM PDT | Flash Flood Warning | SGX | Orange, Riverside, San Bernardino | 3 hr |
| Apr 6, 1:32 PM PDT | Areal Flood Advisory | SGX | Riverside, San Bernardino | 3 hr |
| Apr 6, 4:32 PM PDT | Areal Flood Advisory | SGX | Riverside, San Bernardino | 118 min |
Nearby
Flash Flood Watches in California, 2020Every flash flood watch in 2020
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.