Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 14, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Nov 21, 2016, 12:16 AM PST for San Bernardino County, California. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Nov 21, 2016, 12:16 AM PST (08:16 UTC)
- Expired
- Nov 21, 2016, 3:15 AM PST
- In force
- 3 hr
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
- Flood severity
- None
County San Bernardino County, CA
The radar
The Santa Ana Mts radar (KSOX), 57 km from the middle of the area, began a volume at 08:16 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, 8.3 hours before the alert went out and 169 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
- 3 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 799 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
456
WGUS56 KSGX 210816
FFWSGX
CAC071-211115-
/O.NEW.KSGX.FF.W.0014.161121T0816Z-161121T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
1216 AM PST MON NOV 21 2016
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 315 AM PST
* AT 1212 AM PST...DOPPLER RADAR INDICATED HEAVY RAIN MOVING TOWARD
BLUE CUT AND PILOT FIRE BURN SCARS. EXCESSIVE RAINFALL WILL LIKELY
RESULT IN DEBRIS FLOWS WITHIN AND DOWNSTREAM OF THE THESE BURN
SCARS...INCLUDING RAILWAYS. AFFECTED ROADS INCLUDE CAJON
BOULEVARD, LONE PINE CANYON ROAD, AND HIGHWAY 138. THE DEBRIS FLOW
CAN CONSIST OF ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.
* SOME LOCATIONS THAT WILL LIKELY EXPERIENCE FLOODING INCLUDE...
HWY 2 BETWEEN PHELAN AND WRIGHTWOOD...
I-15 THROUGH THE CAJON PASS...
HWY 18 BETWEEN SAN BERNARDINO AND CRESTLINE...
HWY 138 BETWEEN I-15 AND HWY 2...THE SILVERWOOD LAKE REC AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE AWAY FROM RECENTLY BURNED AREAS. LIFE-THREATENING FLOODING OF
CREEKS...ROADS AND NORMALLY DRY ARROYOS IS LIKELY. THE HEAVY RAINS
WILL LIKELY TRIGGER ROCKSLIDES...MUDSLIDES AND DEBRIS FLOWS IN STEEP
TERRAIN...ESPECIALLY IN AND AROUND THESE AREAS.
&&
LAT...LON 3442 11750 3434 11717 3421 11728 3422 11742
3423 11752 3423 11761 3440 11762
$$
MOEDE3 follow-up statements
687
WGUS76 KSGX 210922
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
122 AM PST MON NOV 21 2016
CAC071-211115-
/O.CON.KSGX.FF.W.0014.000000T0000Z-161121T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
122 AM PST MON NOV 21 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 AM PST FOR SAN
BERNARDINO COUNTY...
AT 107 AM PST...GAUGE REPORTS INDICATED MODERATE RAIN WAS FALLING
OVER THE INLAND EMPIRE AND THE FOOTHILLS OF THE SAN BERNARDINO
MOUNTAINS NEAR LYTLE CREEK. ONE-HOUR RAIN TOTALS ON THE SOUTHERN
EDGE OF BLUE CUT FIRE WERE 0.46" AT LYTLE CREEK AND 0.40" AT SAN
SAVAINE. RAIN TOTALS ELSEWHERE INCLUDE 0.60" AT CRESTLINE, 0.63" AT
CREST PARK, AND 0.51" AT CAL STATE SAN BERNARDINO.
RADAR IS SHOWING ANOTHER BAND OF MODERATE TO HEAVY RAIN APPROACHING
THE EASTERN SECTIONS OF THE BLUE CUT FIRE BURN AREA, AND DIRECTLY
OVER THE PILOT BURN AREA THROUGH 230 AM. AREAS MOST AT RISK OF
FLOODING OR DEBRIS FLOWS INCLUDE CAJON BOULEVARD THROUGH THE CAJON
PASS, THE RAILWAYS IN THE PASS, AND AREAS AROUND THE PILOT FIRE BURN
SCAR.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE AWAY FROM RECENTLY BURNED AREAS. LIFE-THREATENING FLOODING OF
CREEKS...ROADS AND NORMALLY DRY ARROYOS IS LIKELY. THE RAIN MAY
TRIGGER ROCK SLIDES...MUDSLIDES AND DEBRIS FLOWS IN STEEP TERRAIN.
&&
LAT...LON 3442 11750 3434 11717 3421 11728 3422 11742
3423 11752 3423 11761 3440 11762
$$
MOEDE245
WGUS76 KSGX 211043
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
243 AM PST MON NOV 21 2016
CAC071-211115-
/O.CON.KSGX.FF.W.0014.000000T0000Z-161121T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
243 AM PST MON NOV 21 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 AM PST FOR SAN
BERNARDINO COUNTY...
AT 237 AM PST...GAUGE REPORTS INDICATED THE HEAVIER RAINS HAVE MOVED
NORTH AND EAST OF THE BLUE CUT AND PILOT BURN SCARS. HOWEVER, AN
AREA OF MODERATE RAIN WAS OVER THE INLAND EMPIRE AT 230 AM, AND WAS
MOVING NORTH TOWARD THE BURN SCARS. MINOR DEBRIS FLOWS ARE POSSIBLE
OVER THE SOUTHERN AREAS OF THE BURN SCARS THROUGH 315 AM WITH THIS
BAND OF MODERATE RAIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE AWAY FROM RECENTLY BURNED AREAS. LIFE-THREATENING FLOODING OF
CREEKS...ROADS AND NORMALLY DRY ARROYOS IS LIKELY. THE HEAVY RAINS
WILL LIKELY TRIGGER ROCK SLIDES...MUDSLIDES AND DEBRIS FLOWS IN STEEP
TERRAIN...ESPECIALLY IN AND AROUND THESE AREAS.
&&
LAT...LON 3442 11750 3434 11717 3421 11728 3422 11742
3423 11752 3423 11761 3440 11762
$$
MOEDE857
WGUS76 KSGX 211109
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
309 AM PST MON NOV 21 2016
CAC071-211117-
/O.EXP.KSGX.FF.W.0014.000000T0000Z-161121T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
309 AM PST MON NOV 21 2016
...THE FLASH FLOOD WARNING FOR SAN BERNARDINO COUNTY WILL EXPIRE AT
315 AM PST...
THE HEAVY RAIN THREAT HAS ENDED. SCATTERED SHOWERS ARE POSSIBLE
THROUGH MIDDAY, BUT THE FLASH FLOOD THREAT WILL BE LOW.
LAT...LON 3442 11750 3434 11717 3421 11728 3422 11742
3423 11752 3423 11761 3440 11762
$$
MOEDENearby
Flash Flood Warnings in California, 2016Every flash flood warning in 2016
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.