Alert archive / California / Flash Flood Warnings in 2015
Flash Flood Warning 7, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Jul 19, 2015, 1:58 PM PDT for San Diego County, California. It was in force for 3 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 19, 2015, 1:58 PM PDT (20:58 UTC)
- Expired
- Jul 19, 2015, 5:00 PM PDT
- In force
- 3 hr
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
- Flood severity
- None
County San Diego County, CA
The radar
The San Diego radar (KNKX), 49 km from the middle of the area, began a volume at 20:59 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 19, 2:30 PM PDT | FLASH FLOOD | 2 E Julian, CA | SPOTTER REPORTS SIGNIFICANT DEBRIS FLOW ON BANNER GRADE AT MILE MARKER 61. |
| Jul 19, 2:47 PM PDT | FLASH FLOOD | 2 Nnw Julian, CA | CHP REPORTS MUD AND ROCK SLIDE AT HIGHWAY 78 NEAR WYNOLA ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 9.0 hours before the alert went out and 67 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
- 335 J/kg
- Mixed-layer CIN
- -171 J/kg
- Mixed-layer LCL
- 1500 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
500
WGUS56 KSGX 192058
FFWSGX
CAC073-200000-
/O.NEW.KSGX.FF.W.0007.150719T2058Z-150720T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
158 PM PDT SUN JUL 19 2015
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL SAN DIEGO COUNTY IN SOUTHWESTERN CALIFORNIA...
* UNTIL 500 PM PDT
* AT 155 PM PDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
ALREADY FALLEN. FLASH FLOODING WILL LIKELY BEGIN SHORTLY. THESE
THUNDERSTORM CELLS WERE NEARLY STATIONARY.
* SOME LOCATIONS THAT WILL LIKELY EXPERIENCE FLOODING INCLUDE...
JULIAN...HWY 78 BETWEEN BANNER AND S2...CUYAMACA RANCHO STATE
PARK...NORTHERN MOUNT LAGUNA...HWY 78 BETWEEN S2 AND BORREGO
SPRINGS RD...HWY S1 BETWEEN LAKE CUYAMACA AND MOUNT LAGUNA...LAKE
CUYAMACA...HWY 79 BETWEEN JULIAN AND LAKE CUYAMACA...DESCANSO...
BANNER...BOULDER CREEK AND SANTA YSABEL INDIAN RESERVATION.
ADDITIONAL RAINFALL AMOUNTS OF AN INCH OR TWO ARE POSSIBLE IN
THE WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
&&
LAT...LON 3289 11662 3308 11666 3315 11663 3321 11647
3315 11640 3292 11639
$$
JMB2 follow-up statements
281
WGUS76 KSGX 192153
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
253 PM PDT SUN JUL 19 2015
CAC073-200000-
/O.CON.KSGX.FF.W.0007.000000T0000Z-150720T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN DIEGO CA-
253 PM PDT SUN JUL 19 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 PM PDT FOR
EAST CENTRAL SAN DIEGO COUNTY...
AT 247 PM PDT...DOPPLER RADAR INDICATED HEAVY SHOWERS AND
THUNDERSTORMS CONTINUING OVER THE WARNED AREA. HEAVY RAINFALL OF 2
TO 3 INCHES HAS ALREADY FALLEN WITH ADDITIONAL 1 TO 2 INCHES
POSSIBLE THROUGH 5 PM.
A TRAINED WEATHER SPOTTER REPORTED A LARGE DEBRIS FLOW ONGOING AT
BANNER GRADE ALONG STATE HIGHWAY 78 JUST EAST OF JULIAN.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
JULIAN...CUYAMACA RANCHO STATE PARK...NORTHERN MOUNT LAGUNA...LAKE
CUYAMACA...DESCANSO...RANCHITA...WYNOLA... SHELTER
VALLEY...BANNER...BOULDER CREEK AND SANTA YSABEL INDIAN RESERVATION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
&&
LAT...LON 3289 11662 3308 11666 3315 11663 3321 11647
3315 11640 3292 11639
$$
JMB874
WGUS76 KSGX 192354
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
454 PM PDT SUN JUL 19 2015
CAC073-200002-
/O.EXP.KSGX.FF.W.0007.000000T0000Z-150720T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN DIEGO CA-
454 PM PDT SUN JUL 19 2015
...THE FLASH FLOOD WARNING FOR EAST CENTRAL SAN DIEGO COUNTY WILL
EXPIRE AT 500 PM PDT...
THE HEAVY RAIN HAS ENDED...HOWEVER ADDITIONAL LIGHT TO MODERATE RAIN
WILL CONTINUE TO OCCUR IN THE AREA AND COULD EXACERBATE ANY ONGOING
FLASH FLOODING. REMEMBER...TURN AROUND DONT DROWN...DON'T BECOME A
STATISTIC!
LAT...LON 3289 11662 3308 11666 3315 11663 3321 11647
3315 11640 3292 11639
$$
JMBThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 12:24 PM PDT | Areal Flood Advisory | SGX | San Diego | 8 hr |
| Jul 19, 1:27 PM PDT | Areal Flood Advisory | SGX | Riverside, San Diego | 5 hr |
| Jul 19, 1:55 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 65 min |
| Jul 19, 2:37 PM PDT | Areal Flood Advisory | SGX | San Diego | 4 hr |
| Jul 19, 2:50 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 3 hr |
| Jul 19, 3:07 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Jul 19, 3:16 PM PDT | Areal Flood Advisory | SGX | San Bernardino | 3 hr |
| Jul 19, 3:34 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 5 hr |
| Jul 19, 4:35 PM PDT | Flash Flood Warning | SGX | Riverside | 5 hr |
| Jul 19, 4:40 PM PDT | Flash Flood Warning | SGX | Orange | 6 hr |
Nearby
Flash Flood Warnings in California, 2015Every flash flood warning in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.