Alert archive / California / River Flood Warnings in 2020
River Flood Warning 1, NWS San Diego, CA
NWS San Diego, CA issued this river flood warning at Apr 9, 2020, 3:36 PM PDT for San Diego County, California. It took effect at Apr 10, 2020, 10:00 AM PDT. It was in force for 19 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 9, 2020, 3:36 PM PDT (22:36 UTC)
- In effect from
- Apr 10, 2020, 10:00 AM PDT
- Expired
- Apr 11, 2020, 5:06 AM PDT
- In force
- 19 hr
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
- Flood severity
- Minor
County San Diego County, CA
The radar
The San Diego radar (KNKX), 15 km from the middle of the area, began a volume at 22:36 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 river
Written for the forecast point San Diego River at Fashion Valley (FSNC1).
- Action stage
- 7.5 ft
- Minor stage
- 10 ft
- Moderate stage
- 13.5 ft
- Major stage
- 16.5 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 11023000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The text
As transmitted.
197
WGUS46 KSGX 092236
FLWSGX
Bulletin - immediate broadcast requested
Flood Warning
National Weather Service San Diego, CA
336 PM PDT Thu Apr 9 2020
...The National Weather Service in San Diego has issued a flood warning for the
following rivers in California...
San Diego River At Fashion Valley affecting San Diego County
.Overview...
Periods of moderate to heavy rainfall is expected through Friday.
This will lead to significant rises in main stem rivers.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Safety message...
Act now to protect your life and property. Prepare forflood waters to rise
across the warned area. Turn around...don't drown. Do not drive vehicles through
flooded roadways.
&&
CAC073-101135-
/O.NEW.KSGX.FL.W.0001.200410T2200Z-200411T0900Z/
/FSNC1.1.ER.200410T2200Z.200411T0000Z.200411T0300Z.NO/
336 PM PDT Thu Apr 9 2020
The National Weather Service in san diego has issued a
* Flood Warning for
the San Diego River At Fashion Valley
* At 03PM Thursday the stage was 5.3 feet
* No flooding is occurring. Minor flooding is forecast
* Flood stage is 11.3 feet
* At 11.3 feet, Flood stage. Minor Flood. Low water crossings over the river in
Missin Valley are closed and under water. Roads impacted include...Fashion
Valley Road, Avenida Del Rio, Camino Del Este, Camino De La Reina, and Mission
Center Road. Water flows into Fashion Valley parking lot. Fashion Valley transit
center closed....(optional)...This crest compares to a previous crest of 11.5
feet on Feb 24 1998.
&&
LAT...LON 3279 11726 3291 11690 3285 11686 3273 11716
3273 11727
$$
ss/PG6 follow-up statements
774
WGUS86 KSGX 101152
FLSSGX
Flood Statement
National Weather Service San Diego, CA
452 AM PDT Fri Apr 10 2020
...The Flood Warning continues for the following river in California...
San Diego River at Fashion Valley affecting San Diego County for the San Diego River, including Fashion Valley, Minor flooding is forecasted.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay informed on the latest river forecasts and conditions. Do not drive through
flooded areas or around barricades.
&&
CAC073-110052-
/O.CON.KSGX.FL.W.0001.200410T2200Z-200411T0900Z/
/FSNC1.1.ER.200410T2200Z.200411T0000Z.200411T0300Z.NO/
452 AM PDT Fri Apr 10 2020
The Flood Warning continues for the San Diego River at Fashion Valley
* From late this afternoon until this evening
* At 4 AM PDT Friday the stage was 10.2 feet
* Minor flooding is forecast
* Flood stage is 11.3 feet
* At 11.3 feet, Flood stage. Minor Flood. Low water crossings over the river in
Missin Valley are closed and under water. Roads impacted include...Fashion
Valley Road, Avenida Del Rio, Camino Del Este, Camino De La Reina, and Mission
Center Road. Water flows into Fashion Valley parking lot. Fashion Valley transit
center closed.
* Flood History...this crest compares to a previous crest of 12.2 feet on Feb 15
2019.
&&
LAT...LON 3279 11726 3291 11690 3285 11686 3273 11716
3273 11727
$$
17529
WGUS86 KSGX 101522
FLSSGX
Flood Statement
National Weather Service San Diego, CA
822 AM PDT Fri Apr 10 2020
...The flood warning continues for the following rivers in California...
San Diego River At Fashion Valley affecting San Diego County,
including Fashion Valley, Minor flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay informed on the latest river forecasts and conditions.
Do not drive through flooded areas or around barricades.
&&
CAC073-110421-
/O.EXT.KSGX.FL.W.0001.200410T1700Z-200411T1000Z/
/FSNC1.1.ER.200410T1700Z.200410T2000Z.200411T0400Z.NO/
822 AM PDT Fri Apr 10 2020
The Flood Warning continues for
The San Diego River At Fashion Valley
* from late this morning Until tonight
* At 08AM Friday the stage was 10.9 feet
* Minor flooding is forecast
* Flood stage is 11.3 feet
* At 11.3 feet, Flood stage. Minor Flood. Low water crossings over
the river in Mission Valley are closed and under water. Roads impacted include...Fashion Valley Road, Avenida Del Rio, Camino Del Este,
Camino De La Reina, and Mission Center Road. Water flows into Fashion
Valley parking lot. Fashion Valley transit center likely closed.
* Flood History...this crest compares to a previous crest of 12.2 feet on Feb 15
2019.
&&
LAT...LON 3279 11726 3291 11690 3285 11686 3273 11716
3273 11727
$$
10658
WGUS86 KSGX 102005
FLSSGX
Flood Statement
National Weather Service San Diego, CA
105 PM PDT Fri Apr 10 2020
...The flood warning continues for the following rivers in California...
San Diego River At Fashion Valley affecting San Diego County
For the San Diego River, including Fashion Valley, Minor flooding is occuring
and is expected to continue.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay informed on the latest river forecasts and conditions. Do not drive through
flooded areas or around barricades.
&&
CAC073-110906-
/O.CON.KSGX.FL.W.0001.000000T0000Z-200411T1000Z/
/FSNC1.1.ER.200410T1654Z.200410T1937Z.200411T0400Z.NO/
105 PM PDT Fri Apr 10 2020
The Flood Warning continues for
The San Diego River At Fashion Valley
* until tonight
* At 12PM Friday the stage was 11.9 feet and slowly rising.
* Minor flooding is occurring and Minor flooding is forecast. Qualcomm Way and
Camino Del Este are closed due to flooding. The river will crest between 12.0 and 12.5 feet this afternoon.
* Flood stage is 11.3 feet.
* At 11.3 feet, Flood stage. Minor Flood. Low water crossings over the river in
Mission Valley are closed and under water. Roads impacted include...Fashion
Valley Road, Avenida Del Rio, Camino Del Este, Camino De La Reina, and Mission
Center Road. Water flows into Fashion Valley parking lot. Fashion Valley transit
center closed.
* Flood History...this crest compares to a previous crest of 12.2 feet on Feb 15 2019.
&&
LAT...LON 3279 11726 3291 11690 3285 11686 3273 11716
3273 11727
$$839
WGUS86 KSGX 102148
FLSSGX
Flood Statement
National Weather Service San Diego, CA
248 PM PDT Fri Apr 10 2020
...The flood warning continues for the following rivers in California...
San Diego River At Fashion Valley affecting San Diego County
For the San Diego River, including Fashion Valley, minor flooding is occuring
and is expected to continue.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay informed on the latest river forecasts and conditions. Do not drive through
flooded areas or around barricades.
&&
CAC073-111047-
/O.EXT.KSGX.FL.W.0001.000000T0000Z-200411T1400Z/
/FSNC1.1.ER.200410T1654Z.200410T2200Z.200411T0800Z.NO/
248 PM PDT Fri Apr 10 2020
The Flood Warning continues for
The San Diego River At Fashion Valley
* until after midnight tomorrow
* At 2 PM Friday the stage was 12.4 feet
* Minor flooding is occurring and minor flooding is forecast
* Flood stage is 11.3 feet
* At 11.3 feet, flood stage. Minor Flood. Low water crossings over the river in
Mission Valley are closed and under water. Roads impacted include...Fashion
Valley Road, Avenida Del Rio, Camino Del Este, Camino De La Reina, and Mission
Center Road. Water flows into Fashion Valley parking lot. Fashion Valley transit
center closed.
* Flood History...this crest compares to a previous crest of 12.2 feet on Feb 15
2019.
&&
LAT...LON 3279 11726 3291 11690 3285 11686 3273 11716
3273 11727
$$
SS428
WGUS86 KSGX 110501
FLSSGX
Flood Statement
National Weather Service San Diego, CA
1001 PM PDT Fri Apr 10 2020
...The flood warning continues for the following rivers in California...
San Diego River At Fashion Valley affecting San Diego County
Santa Margarita River At Santa Margarita river at Ysidora affecting San Diego
County
For the San Diego River, including Fashion Valley, Minor flooding is occuring
and is expected to continue. For the Santa Margarita River, including Santa
Margarita river at Ysidora, Minor flooding is forecasted.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay informed on the latest river forecasts and conditions. Do not drive through
flooded areas or around barricades.
&&
CAC073-111520-
/O.EXT.KSGX.FL.W.0001.000000T0000Z-200411T1520Z/
/FSNC1.1.ER.200410T1654Z.200411T0207Z.200411T0920Z.NO/
1001 PM PDT Fri Apr 10 2020
The Flood Warning continues for
The San Diego River At Fashion Valley
* until after midnight tomorrow
* At 09PM Friday the stage was 12.1 feet
* Minor flooding is occurring and Minor flooding is forecast
* Flood stage is 11.3 feet
* At 11.3 feet, Flood stage. Minor Flood. Low water crossings over the river in
Mission Valley are closed and under water. Roads impacted include...Fashion
Valley Road, Avenida Del Rio, Camino Del Este, Camino De La Reina, and Mission
Center Road. Water flows into Fashion Valley parking lot. Fashion Valley transit
center closed.* Flood History...this crest compares to a previous crest of 12.2 feet on Feb 15
2019.
&&
LAT...LON 3279 11726 3291 11690 3285 11686 3273 11716
3273 11727
$$
CAC073-111801-
/O.EXT.KSGX.FL.W.0002.000000T0000Z-200411T2142Z/
/YDRC1.1.ER.200411T0457Z.200411T0600Z.200411T0942Z.NO/
1001 PM PDT Fri Apr 10 2020
The Flood Warning continues for
The Santa Margarita River At Santa Margarita river at Ysidora
* from tonight Until after midnight tomorrow
* At 09PM Friday the stage was 10.5 feet
* Minor flooding is forecast
* Flood stage is 11.2 feet
* At 11.2 feet, Minor flood stage, 8,000 cfs. Vandegrift Road has begun to
flood downstream of the gage. Stuart Mesa Road closures can be expected.* Flood History...this crest compares to a previous crest of 12.4 feet on Feb 23
1998.
&&
LAT...LON 3325 11743 3341 11731 3337 11728 3326 11735
3321 11740
$$
jmb475
WGUS86 KSGX 111206
FLSSGX
Flood Statement
National Weather Service San Diego, CA
506 AM PDT Sat Apr 11 2020
...The flood warning is cancelled for the following rivers in California...
San Diego River At Fashion Valley affecting San Diego County
Santa Margarita River At Santa Margarita river at Ysidora affecting San Diego
County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay informed on the latest river forecasts and conditions. Do not drive through
flooded areas or around barricades.
&&
CAC073-111236-
/O.CAN.KSGX.FL.W.0001.000000T0000Z-200411T1520Z/
/FSNC1.1.ER.200410T1654Z.200411T0207Z.200411T0913Z.NO/
506 AM PDT Sat Apr 11 2020
Forecast information for
San Diego River At Fashion Valley
* At 4 AM Saturday the stage was 10.9 feet
* Although no signficant flooding is forecast, there will continue to be
flooding near the Fashion Valley Mall, including Fashion Valley Road,
Avenida Del Rio, and Camino Del Este.
* Flood stage is 11.3 feet
* Forecast...water levels will continue a steady fall throughout the day
and is forecast to fall below 8 feet by late this afternoon.
&&
LAT...LON 3279 11726 3291 11690 3285 11686 3273 11716
3273 11727
$$
CAC073-111236-
/O.CAN.KSGX.FL.W.0002.000000T0000Z-200411T2142Z/
/YDRC1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
506 AM PDT Sat Apr 11 2020
Forecast information for
Santa Margarita River At Santa Margarita river at Ysidora
* At 4 AM Saturday the stage was 9.0 feet
* No flooding is currently forecast
* Flood stage is 11.2 feet
* Forecast...water levels will continue a steady fall throughout the day
and is forecast to fall below 7 feet late this morning.
&&
LAT...LON 3325 11743 3341 11731 3337 11728 3326 11735
3321 11740
$$
GregoriaWhat forecasters said that day
The local office's own words before this river flood warning 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 river flood warning went out at Apr 9, 1:46 PM PDT, 1 hour 50 minutes earlier.
Area forecast discussion, Apr 9, 1:46 PM PDT, 1 hour 50 minutes before
Area Forecast Discussion
National Weather Service San Diego CA
Issued by National Weather Service San Francisco CA
146 PM PDT Thu Apr 9 2020
.SYNOPSIS...
A low pressure system will continue to impact southern California
through Friday, then move more rapidly eastward and weaken by
Friday night into Saturday. Periods of showers and high elevation
snow showers will continue into Friday, ending Friday night.
Saturday through Monday will be warmer and drier, but with high
temperatures remaining below average. Then warmer and drier
conditions return by the middle of next week.
&&
.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
A mid/upper level low pressure system remains parked over south-
central California and southern Nevada this afternoon with
widespread rain showers and higher elevation snow showers
occurring, especially to the north of the San Diego area. The
center of the low will retrograde back over the Pacific by Friday
morning and continue to produce widespread precipitation over the
region through tonight while becoming more widespread. With PWAT
values near 1.00" advecting inland over the region, precipitation
will be moderate to locally heavy at times. Additionally, snow
levels will remain between 5,500 to 6,000 feet through Friday
afternoon with accumulating snowfall in the mountains of San
Bernardino and Riverside Counties where a Winter Storm Warning
remains in effect through 8 PM Friday. As the core of the low
moves back over southern California, there will be a slight
chance of thunderstorms Friday afternoon given the colder,
unstable air mass aloft.
Precipitation will begin to taper off late in the day Friday as
the upper level low moves east into Arizona. Afternoon
temperatures will warm slightly Friday into the upcoming weekend
as southerly flow returns, yet will remain below seasonal
averages in response to troughing over the West Coast. Warmer and
drier conditions are then likely by Tuesday and Wednesday of next
week as the exiting trough is replaced by high pressure building
over the eastern Pacific.
&&
.AVIATION...
091630Z...Coast/Valleys/Mountains...SCT SHRA will continue this
morning, increasing and becoming more widespread this afternoon
and evening. SCT-BKN Cigs lowering to around 1700 ft MSL with
VSBYS 2-5SM possible with passing showers. Otherwise SCT-BKN cigs
will generally remains around 2500-5000 ft MSL. Higher terrain
will be obscured at times, and SHSN will fall above 4500 feet MSL.
Deserts...Mostly BKN clouds will prevail in the 5000-10000-foot MSL
layer through midday, increasing in the afternoon and possibly
lowering to 3000 feet MSL tonight. Mostly ISOLD -SHRA will occur
through midday, with some increase this afternoon and evening. Vis
could lower to 3-5SM in heavier SHRA.
&&
.MARINE...
There is a slight chance of thunderstorms Friday afternoon.
Otherwise, no hazardous marine weather is expected through Sunday.
&&
.BEACHES...
There is a slight chance of thunderstorms producing lightning
strikes Friday afternoon.
&&
.HYDROLOGY...
Through Friday, additional rainfall is expected to range from
around 1.50 inch near the coast to 1.50 to 2.50 inches in the
mountains with 0.50 to 0.75" inch for high desert areas and
around 0.25 to 0.50 for low desert areas.
The potential for urban and small stream flooding will increase
this evening and into early Friday along with the possibility of
isolated flash flooding with thunderstorms or where showers track
repeatedly across the same area.
Snow levels will be near 5000 to 5500 feet for tonight into Friday
morning and gradually rise late Friday night. In the mountains of
San Bernardino and Riverside Counties, additional snowfall of 2
to 5 inches is expected from 4500 to 5500 feet, 6 to 8 inches
from 5500 to 6500 feet, 8 to 20 inches from 6500 to 7500 feet,
with total accumulations of greater than 24 inches on the highest
peaks. In San Diego County, 1 to 3 inches is possible above 5500
feet with 1 to 2 inches down to 5000 feet.
&&
.SKYWARN...
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.
&&
.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Flash Flood Watch through Friday afternoon for 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-
Santa Ana Mountains and Foothills.
Winter Storm Warning until 8 PM PDT Friday for Riverside County
Mountains-San Bernardino County Mountains.
PZ...NONE.
&&
PUBLIC...99
AVIATION/MARINE/BEACHES...99In the hours before
Local storm report, Apr 9, 2:46 PM PDT, 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
246 PM PDT THU APR 9 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0146 PM HEAVY SNOW RUNNING SPRINGS 34.21N 117.11W
04/09/2020 M17.0 INCH SAN BERNARDINO CA TRAINED SPOTTER
TOTAL SINCE MONDAY. STILL SNOWING. ABOUT
6200 FEET.
&&
AOTNearby
River Flood Warnings in California, 2020Every river flood warning 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.