Alert archive / California / Flash Flood Watches in 2011
Flash Flood Watch 4, NWS San Diego, CA
NWS San Diego, CA issued this flash flood watch at Mar 19, 2011, 5:10 AM PDT for 4 counties in California. It took effect at Mar 20, 2011, 6:00 PM PDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Mar 19, 2011, 5:10 AM PDT (12:10 UTC)
- In effect from
- Mar 20, 2011, 6:00 PM PDT
- Expired
- Mar 21, 2011, 2:27 AM PDT
- In force
- 8 hr
- 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 12:10 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, 0.2 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
- 753 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- -49 m²/s²
- 0-3 km storm-relative helicity
- -51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
032 WGUS66 KSGX 191210 FFASGX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE SAN DIEGO CA 510 AM PDT SAT MAR 19 2011 ...HEAVY RAINFALL AND FLASH FLOODING POSSIBLE BELOW 6000 FEET FOR SUNDAY AFTERNOON THROUGH SUNDAY NIGHT... .A PACIFIC STORM SYSTEM IS EXPECTED TO BRING PERIODS OF HEAVY RAINFALL AT TIMES WITH THE POSSIBILITY OF FLASH FLOODING FOR SUNDAY AFTERNOON THROUGH SUNDAY NIGHT ALONG AND WEST OF THE MOUNTAINS BELOW 6000 FEET...AND IN UPPER DESERT AREAS ADJACENT TO THE SAN BERNARDINO COUNTY MOUNTAINS. CAZ042-048-057-192100- /O.NEW.KSGX.FF.A.0004.110320T1900Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS AND FOOTHILLS- 510 AM PDT SAT MAR 19 2011 ...FLASH FLOOD WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...ORANGE COUNTY COASTAL AREAS... SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS. * FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...ORANGE COUNTY COASTAL AREAS... SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS. * FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT * RAINFALL IS EXPECTED TO DEVELOP SUNDAY...POSSIBLY BECOMING HEAVY AT TIMES SUNDAY AFTERNOON AND CONTINUING INTO SUNDAY NIGHT. THE HEAVIEST RAINFALL IS EXPECTED TO BEGIN SUNDAY EVENING. THE HEAVY RAINFALL COULD CAUSE FLASH FLOODING...ESPECIALLY SUNDAY NIGHT. 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. && $$ CAZ060-192100- /O.NEW.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ APPLE AND LUCERNE VALLEYS- 510 AM PDT SAT MAR 19 2011 ...FLASH FLOOD WATCH IN EFFECT FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...APPLE AND LUCERNE VALLEYS. * FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT * RAINFALL IS EXPECTED TO DEVELOP SUNDAY...POSSIBLY BECOMING HEAVY AT TIMES SUNDAY NIGHT. THE HEAVIEST RAINFALL IS EXPECTED IN AREAS NEAR THE SAN BERNARDINO COUNTY MOUNTAINS. THE HEAVY RAINFALL COULD CAUSE FLASH FLOODING NEAR AND DOWNSTREAM FROM THE MOUNTAINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ CAZ043-050-058-192100- /O.NEW.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN DIEGO COUNTY COASTAL AREAS-SAN DIEGO COUNTY VALLEYS- SAN DIEGO COUNTY MOUNTAINS- 510 AM PDT SAT MAR 19 2011 ...FLASH FLOOD WATCH IN EFFECT FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA... INCLUDING THE FOLLOWING AREAS...SAN DIEGO COUNTY COASTAL AREAS...SAN DIEGO COUNTY MOUNTAINS AND SAN DIEGO COUNTY VALLEYS. * FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT * RAINFALL IS EXPECTED TO DEVELOP SUNDAY...BECOMING HEAVY AT TIMES SUNDAY NIGHT WITH THE POTENTIAL FOR FLASH FLOODING. 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. && $$ CAZ056-192100- /O.NEW.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ RIVERSIDE COUNTY MOUNTAINS- 510 AM PDT SAT MAR 19 2011 ...FLASH FLOOD WATCH IN EFFECT FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT BELOW 6000 FEET... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA... INCLUDING THE FOLLOWING AREA...RIVERSIDE COUNTY MOUNTAINS. * FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT * HEAVY RAINFALL IS POSSIBLE FOR SUNDAY NIGHT BELOW 6000 FEET WITH THE POTENTIAL FOR FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ CAZ055-192100- /O.NEW.KSGX.FF.A.0004.110320T1900Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO COUNTY MOUNTAINS- 510 AM PDT SAT MAR 19 2011 ...FLASH FLOOD WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT BELOW 6000 FEET... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA... INCLUDING THE FOLLOWING AREA...SAN BERNARDINO COUNTY MOUNTAINS. * FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT * HEAVY RAINFALL IS POSSIBLE FOR SUNDAY AFTERNOON THROUGH SUNDAY NIGHT BELOW 6000 FEET WITH THE POTENTIAL FOR FLASH FLOODING. 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. && $$ MARTIN
5 follow-up statements
294 WGUS66 KSGX 192005 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE SAN DIEGO CA 105 PM PDT SAT MAR 19 2011 ...HEAVY RAINFALL AND FLASH FLOODING POSSIBLE BELOW 6000 FEET FOR SUNDAY AFTERNOON THROUGH SUNDAY NIGHT... .A PACIFIC STORM SYSTEM IS EXPECTED TO BRING PERIODS OF HEAVY RAINFALL AT TIMES WITH THE POSSIBILITY OF FLASH FLOODING FOR SUNDAY AFTERNOON THROUGH SUNDAY NIGHT ALONG AND WEST OF THE MOUNTAINS BELOW 6000 FEET...AND IN UPPER DESERT AREAS ADJACENT TO THE SAN BERNARDINO COUNTY MOUNTAINS. CAZ042-048-057-201100- /O.CON.KSGX.FF.A.0004.110320T1900Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS AND FOOTHILLS- 105 PM PDT SAT MAR 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...ORANGE COUNTY COASTAL AREAS...SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS. * FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT. * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA... INCLUDING THE FOLLOWING AREAS...ORANGE COUNTY COASTAL AREAS... SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS. * RAINFALL IS EXPECTED TO DEVELOP SUNDAY...POSSIBLY BECOMING HEAVY AT TIMES SUNDAY AFTERNOON AND CONTINUING INTO SUNDAY NIGHT. THE HEAVIEST RAINFALL IS EXPECTED SUNDAY EVENING INTO MONDAY MORNING. THE HEAVY RAINFALL COULD CAUSE FLASH FLOODING...ESPECIALLY SUNDAY NIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ CAZ060-201100- /O.CON.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ APPLE AND LUCERNE VALLEYS- 105 PM PDT SAT MAR 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...APPLE AND LUCERNE VALLEYS. * FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT. * RAINFALL IS EXPECTED TO DEVELOP SUNDAY...POSSIBLY BECOMING HEAVY AT TIMES SUNDAY NIGHT. THE HEAVIEST RAINFALL IS EXPECTED IN AREAS NEAR THE SAN BERNARDINO COUNTY MOUNTAINS. THE HEAVY RAINFALL COULD CAUSE FLASH FLOODING NEAR AND DOWNSTREAM FROM THE MOUNTAINS. 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. && $$ CAZ043-050-058-201100- /O.CON.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN DIEGO COUNTY COASTAL AREAS-SAN DIEGO COUNTY VALLEYS- SAN DIEGO COUNTY MOUNTAINS- 105 PM PDT SAT MAR 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...SAN DIEGO COUNTY COASTAL AREAS...SAN DIEGO COUNTY MOUNTAINS AND SAN DIEGO COUNTY VALLEYS. * FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT. * RAINFALL IS EXPECTED TO DEVELOP SUNDAY...BECOMING HEAVY AT TIMES SUNDAY NIGHT WITH THE POTENTIAL FOR FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ CAZ056-201100- /O.CON.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ RIVERSIDE COUNTY MOUNTAINS- 105 PM PDT SAT MAR 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...RIVERSIDE COUNTY MOUNTAINS. * FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT. * HEAVY RAINFALL IS POSSIBLE FOR SUNDAY NIGHT BELOW 6000 FEET WITH THE POTENTIAL FOR FLASH FLOODING. 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. && $$ CAZ055-201100- /O.CON.KSGX.FF.A.0004.110320T1900Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO COUNTY MOUNTAINS- 105 PM PDT SAT MAR 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...SAN BERNARDINO COUNTY MOUNTAINS. * FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT. * HEAVY RAINFALL IS POSSIBLE FOR SUNDAY AFTERNOON THROUGH SUNDAY NIGHT BELOW 6000 FEET WITH THE POTENTIAL FOR FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ PG
206 WGUS66 KSGX 201005 FFASGX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE SAN DIEGO CA 305 AM PDT SUN MAR 20 2011 ...HEAVY RAINFALL AND FLASH FLOODING POSSIBLE BELOW 6000 FEET FOR TONIGHT... .A PACIFIC STORM SYSTEM IS EXPECTED TO BRING PERIODS OF HEAVY RAINFALL AT TIMES WITH THE POSSIBILITY OF FLASH FLOODING FOR TONIGHT ALONG AND WEST OF THE MOUNTAINS BELOW 6000 FEET...AND IN UPPER DESERT AREAS ADJACENT TO THE SAN BERNARDINO COUNTY MOUNTAINS. CAZ042-048-057-201815- /O.EXT.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS AND FOOTHILLS- 305 AM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH NOW IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...ORANGE COUNTY COASTAL AREAS...SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS. * FROM THIS EVENING THROUGH LATE TONIGHT * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...ORANGE COUNTY COASTAL AREAS... SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS. * RAINFALL TODAY...POSSIBLY BECOMING HEAVY AT TIMES THIS AND CONTINUING TONIGHT. THE HEAVIEST RAINFALL IS EXPECTED THIS EVENING THROUGH LATE TONIGHT. THE HEAVY RAINFALL COULD CAUSE FLASH FLOODING. 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. && $$ CAZ043-050-058-201815- /O.EXT.KSGX.FF.A.0004.110321T0500Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN DIEGO COUNTY COASTAL AREAS-SAN DIEGO COUNTY VALLEYS- SAN DIEGO COUNTY MOUNTAINS- 305 AM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH NOW IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...SAN DIEGO COUNTY COASTAL AREAS...SAN DIEGO COUNTY MOUNTAINS AND SAN DIEGO COUNTY VALLEYS. * FROM THIS EVENING THROUGH LATE TONIGHT * RAINFALL IS EXPECTED TO DEVELOP BY THIS EVENING...BECOMING HEAVY AT TIMES TONIGHT WITH THE POTENTIAL FOR FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ CAZ056-201815- /O.EXT.KSGX.FF.A.0004.110321T0500Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ RIVERSIDE COUNTY MOUNTAINS- 305 AM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH NOW IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT BELOW 6000 FEET... THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...RIVERSIDE COUNTY MOUNTAINS. * FROM THIS EVENING THROUGH LATE TONIGHT * HEAVY RAINFALL IS POSSIBLE FOR TONIGHT BELOW 6000 FEET WITH THE POTENTIAL FOR FLASH FLOODING. 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. && $$ CAZ055-201815- /O.EXT.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO COUNTY MOUNTAINS- 305 AM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH NOW IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT BELOW 6000 FEET... THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...SAN BERNARDINO COUNTY MOUNTAINS. * FROM THIS EVENING THROUGH LATE TONIGHT * HEAVY RAINFALL IS POSSIBLE FOR THIS AFTERNOON THROUGH LATE TONIGHT BELOW 6000 FEET WITH THE POTENTIAL FOR FLASH FLOODING. THE HEAVIEST RAINFALL IS EXPECTED THIS EVENING THROUGH LATE TONIGHT WITH PEAK THREE HOURLY AMOUNTS EXCEEDING 2 INCHES POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ CAZ060-201815- /O.CON.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ APPLE AND LUCERNE VALLEYS- 305 AM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...APPLE AND LUCERNE VALLEYS. * FROM THIS EVENING THROUGH LATE TONIGHT * RAINFALL IS EXPECTED TO DEVELOP TODAY...POSSIBLY BECOMING HEAVY AT TIMES TONIGHT. THE HEAVIEST RAINFALL IS EXPECTED IN AREAS NEAR THE SAN BERNARDINO COUNTY MOUNTAINS. THE HEAVY RAINFALL COULD CAUSE FLASH FLOODING NEAR AND DOWNSTREAM FROM THE MOUNTAINS. 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. && $$ MARTIN
934 WGUS66 KSGX 201743 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE SAN DIEGO CA 1043 AM PDT SUN MAR 20 2011 ...HEAVY RAINFALL AND FLASH FLOODING POSSIBLE BELOW 6000 FEET FOR TONIGHT... .A PACIFIC STORM SYSTEM IS EXPECTED TO BRING PERIODS OF HEAVY RAINFALL AT TIMES WITH THE POSSIBILITY OF FLASH FLOODING FOR TONIGHT ALONG AND WEST OF THE MOUNTAINS BELOW 6000 FEET...AND IN UPPER DESERT AREAS BELOW THE NORTH SLOPES OF THE SAN BERNARDINO COUNTY MOUNTAINS. CAZ042-048-057-210530- /O.CON.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS AND FOOTHILLS- 1043 AM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 6 PM PDT THIS EVENING THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...ORANGE COUNTY COASTAL AREAS...SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS. * FROM 6 PM PDT THIS EVENING THROUGH LATE TONIGHT. * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA... INCLUDING THE FOLLOWING AREAS...ORANGE COUNTY COASTAL AREAS... SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS. * RAINFALL TODAY...POSSIBLY BECOMING HEAVY AT TIMES THIS AFTERNOON AND CONTINUING TONIGHT. THE HEAVIEST RAINFALL IS EXPECTED THIS EVENING THROUGH LATE TONIGHT. THE HEAVY RAINFALL COULD CAUSE FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ CAZ060-210530- /O.CON.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ APPLE AND LUCERNE VALLEYS- 1043 AM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 6 PM PDT THIS EVENING THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...APPLE AND LUCERNE VALLEYS. * FROM 6 PM PDT THIS EVENING THROUGH LATE TONIGHT. * RAINFALL IS EXPECTED TO DEVELOP TODAY...POSSIBLY BECOMING HEAVY AT TIMES TONIGHT. THE HEAVIEST RAINFALL IS EXPECTED IN AREAS NEAR THE SAN BERNARDINO COUNTY MOUNTAINS. THE HEAVY RAINFALL COULD CAUSE FLASH FLOODING NEAR AND DOWNSTREAM FROM THE MOUNTAINS. 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. && $$ CAZ043-050-058-210530- /O.CON.KSGX.FF.A.0004.110321T0500Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN DIEGO COUNTY COASTAL AREAS-SAN DIEGO COUNTY VALLEYS- SAN DIEGO COUNTY MOUNTAINS- 1043 AM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 10 PM PDT THIS EVENING THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...SAN DIEGO COUNTY COASTAL AREAS...SAN DIEGO COUNTY MOUNTAINS AND SAN DIEGO COUNTY VALLEYS. * FROM 10 PM PDT THIS EVENING THROUGH LATE TONIGHT. * RAINFALL IS EXPECTED TO DEVELOP BY LATE AFTERNOON OR EARLY EVENING...BECOMING HEAVY AT TIMES TONIGHT WITH THE POTENTIAL FOR FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ CAZ056-210530- /O.CON.KSGX.FF.A.0004.110321T0500Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ RIVERSIDE COUNTY MOUNTAINS- 1043 AM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 10 PM PDT THIS EVENING THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...RIVERSIDE COUNTY MOUNTAINS. * FROM 10 PM PDT THIS EVENING THROUGH LATE TONIGHT. * HEAVY RAINFALL IS POSSIBLE TONIGHT BELOW 6000 FEET WITH THE POTENTIAL FOR FLASH FLOODING. 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. && $$ CAZ055-210530- /O.CON.KSGX.FF.A.0004.110321T0100Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO COUNTY MOUNTAINS- 1043 AM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 6 PM PDT THIS EVENING THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...SAN BERNARDINO COUNTY MOUNTAINS. * FROM 6 PM PDT THIS EVENING THROUGH LATE TONIGHT. * HEAVY RAINFALL IS POSSIBLE FOR THIS AFTERNOON THROUGH LATE TONIGHT BELOW 6000 FEET WITH THE POTENTIAL FOR FLASH FLOODING. THE HEAVIEST RAINFALL IS EXPECTED THIS EVENING THROUGH LATE TONIGHT WITH PEAK THREE HOURLY AMOUNTS EXCEEDING 2 INCHES POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ PG
420 WGUS66 KSGX 210116 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE SAN DIEGO CA 616 PM PDT SUN MAR 20 2011 ...HEAVY RAINFALL AND FLASH FLOODING POSSIBLE BELOW 6000 FEET FOR TONIGHT... .A PACIFIC STORM SYSTEM IS EXPECTED TO BRING PERIODS OF HEAVY RAINFALL AT TIMES WITH THE POSSIBILITY OF FLASH FLOODING FOR TONIGHT ALONG AND WEST OF THE MOUNTAINS BELOW 6000 FEET...AND IN UPPER DESERT AREAS BELOW THE NORTH SLOPES OF THE SAN BERNARDINO COUNTY MOUNTAINS. CAZ042-048-057-210930- /O.CON.KSGX.FF.A.0004.000000T0000Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS AND FOOTHILLS- 616 PM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...ORANGE COUNTY COASTAL AREAS...SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS. * THROUGH LATE TONIGHT * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA... INCLUDING THE FOLLOWING AREAS...ORANGE COUNTY COASTAL AREAS... SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS. * RAINFALL...BECOMING HEAVY AT TIMES TONIGHT. MAXIMUM RAINFALL RATES OF ONE-HALF...TO ONE-AND-ONE-HALF INCH PER WILL BE POSSIBLE FOR A TIME OVERNIGHT. * IMPACTS...THREAT OF FLASH FLOODING AND DEBRIS FLOWS IN AND BELOW RECENTLY BURNED AREAS. POOLING AND RAPID RISES OF WATER POSSIBLE IN AREAS WITH POOR DRAINAGE. NORMALLY DRY CREEK BEDS MAY FILL AND OVERFLOW THEIR BANKS. DANGEROUS SWIFT WATER IN NARROW CULVERTS AND CHANNELS DESIGNED TO CARRY AWAY EXCESS RAINFALL. 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. && $$ CAZ060-210930- /O.CON.KSGX.FF.A.0004.000000T0000Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ APPLE AND LUCERNE VALLEYS- 616 PM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...APPLE AND LUCERNE VALLEYS. * THROUGH LATE TONIGHT * RAINFALL...POSSIBLY BECOMING HEAVY AT TIMES TONIGHT. THE HEAVIEST RAINFALL IS EXPECTED IN AREAS NEAR THE SAN BERNARDINO COUNTY MOUNTAINS. * IMPACTS...THE HEAVY RAINFALL COULD CAUSE FLASH FLOODING NEAR AND DOWNSTREAM FROM THE MOUNTAIN FOOTHILLS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ CAZ043-050-058-210930- /O.CON.KSGX.FF.A.0004.110321T0500Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN DIEGO COUNTY COASTAL AREAS-SAN DIEGO COUNTY VALLEYS- SAN DIEGO COUNTY MOUNTAINS- 616 PM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 10 PM PDT THIS EVENING THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...SAN DIEGO COUNTY COASTAL AREAS...SAN DIEGO COUNTY MOUNTAINS AND SAN DIEGO COUNTY VALLEYS. * FROM 10 PM PDT THIS EVENING THROUGH LATE TONIGHT * RAINFALL WILL DEVELOP TONIGHT...BECOMING HEAVY AT TIMES...WITH THE POTENTIAL FOR FLASH FLOODING. * IMPACTS...THREAT OF FLASH FLOODING AND DEBRIS FLOWS IN AND BELOW RECENTLY BURNED AREAS. POOLING AND RAPID RISES OF WATER POSSIBLE IN AREAS WITH POOR DRAINAGE. NORMALLY DRY CREEK BEDS MAY FILL AND OVERFLOW THEIR BANKS. DANGEROUS SWIFT WATER IN NARROW CULVERTS AND CHANNELS DESIGNED TO CARRY AWAY EXCESS RAINFALL. 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. && $$ CAZ056-210930- /O.CON.KSGX.FF.A.0004.110321T0500Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ RIVERSIDE COUNTY MOUNTAINS- 616 PM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 10 PM PDT THIS EVENING THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...RIVERSIDE COUNTY MOUNTAINS. * FROM 10 PM PDT THIS EVENING THROUGH LATE TONIGHT * HEAVY RAINFALL IS POSSIBLE TONIGHT BELOW 6000 FEET WITH THE POTENTIAL FOR FLASH FLOODING. * IMPACTS...THREAT OF FLASH FLOODING AND DEBRIS FLOWS IN AND BELOW RECENTLY BURNED AREAS. POOLING AND RAPID RISES OF WATER POSSIBLE IN AREAS WITH POOR DRAINAGE. NORMALLY DRY CREEK BEDS MAY FILL AND OVERFLOW THEIR BANKS. DANGEROUS SWIFT WATER IN NARROW CULVERTS AND CHANNELS DESIGNED TO CARRY AWAY EXCESS RAINFALL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ CAZ055-210930- /O.CON.KSGX.FF.A.0004.000000T0000Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO COUNTY MOUNTAINS- 616 PM PDT SUN MAR 20 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREA...SAN BERNARDINO COUNTY MOUNTAINS. * THROUGH LATE TONIGHT * HEAVY RAINFALL IS POSSIBLE FOR THIS AFTERNOON THROUGH LATE TONIGHT BELOW 6000 FEET WITH THE POTENTIAL FOR FLASH FLOODING. THE HEAVIEST RAINFALL IS EXPECTED THIS EVENING THROUGH LATE TONIGHT WITH PEAK THREE HOURLY AMOUNTS NEAR 3 INCHES POSSIBLE. * IMPACTS...THREAT OF FLASH FLOODING AND DEBRIS FLOWS IN AND BELOW RECENTLY BURNED AREAS. POOLING AND RAPID RISES OF WATER POSSIBLE IN AREAS WITH POOR DRAINAGE. NORMALLY DRY CREEK BEDS MAY FILL AND OVERFLOW THEIR BANKS. DANGEROUS SWIFT WATER IN NARROW CULVERTS AND CHANNELS DESIGNED TO CARRY AWAY EXCESS RAINFALL. 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. && $$ JAD
452 WGUS66 KSGX 210927 FFASGX FLOOD WATCH NATIONAL WEATHER SERVICE SAN DIEGO CA 227 AM PDT MON MAR 21 2011 ...THE FLASH FLOOD WATCH FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA HAS BEEN CANCELLED... .WIDESPREAD PRECIPITATION ASSOCIATED WITH A PACIFIC STORM SYSTEM IS WEAKENING AND DECREASING IN COVERAGE AS THE STORM MOVES INLAND. LOCAL URBAN AND SMALL STREAM FLOOD IS STILL POSSIBLE THROUGH EARLY EVENING FROM SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS...BUT FLASH FLOODING IS NOT EXPECTED. CAZ042-043-048-050-055>058-060-211030- /O.CAN.KSGX.FF.A.0004.000000T0000Z-110321T1300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ORANGE COUNTY COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN DIEGO COUNTY VALLEYS-SAN BERNARDINO COUNTY MOUNTAINS- RIVERSIDE COUNTY MOUNTAINS-SANTA ANA MOUNTAINS AND FOOTHILLS- SAN DIEGO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS- 227 AM PDT MON MAR 21 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA HAS BEEN CANCELLED. WIDESPREAD PRECIPITATION ASSOCIATED WITH A PACIFIC STORM SYSTEM IS WEAKENING AND DECREASING IN COVERAGE AS THE STORM MOVES INLAND. LOCAL URBAN AND SMALL STREAM FLOOD IS STILL POSSIBLE THROUGH EARLY EVENING FROM SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS...BUT FLASH FLOODING IS NOT EXPECTED. $$ MARTIN
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 Mar 18, 9:45 PM PDT, 7 hours 25 minutes earlier.
Area forecast discussion, Mar 18, 9:45 PM PDT, 7 hours 25 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO CA 945 PM PDT FRI MAR 18 2011 .SYNOPSIS...A STRONG STORM OVER THE PACIFIC WILL BRING INCREASING CLOUDS...WINDS AND RAIN CHANCES THROUGH THE WEEKEND. THE CHANCES FOR LIGHT RAIN AND MOUNTAIN SNOW WILL INCREASE ON SUNDAY ACROSS THE NORTHERN AREAS. PERIODS OF HEAVY RAIN...SNOW AND STRONG WINDS ARE LIKELY SUNDAY NIGHT WITH THE PASSAGE OF THE COLD FRONT. SHOWERS WILL TAPER OFF MONDAY FOLLOWED BY DRY...WARMER WEATHER MID WEEK UNDER HIGH PRESSURE ALOFT. && .DISCUSSION...FOR SOUTHWEST CALIFORNIA INCLUDING SAN DIEGO... ORANGE...SOUTHWEST SAN BERNARDINO AND WEST RIVERSIDE COUNTIES. THE POTENT UPPER LOW OFF THE COAST OF CENTRAL CALIFORNIA BROUGHT THUNDERSTORMS...A WATERSPOUT AND A TORNADO TO THE BAY AREA THIS AFTERNOON. THIS COLD UPPER LOW WILL ROTATE SLOWLY SOUTHWARD OVER THE NEXT 48 HOURS...EVENTUALLY BRINGING RAIN AND MOUNTAIN SNOW TO SOUTHERN CALIFORNIA. THE TIMING OF THE PRECIP IS A LITTLE CLEARER AND IT APPEARS THE HEAVIEST PRECIPITATION WILL FALL SUNDAY NIGHT. BUT FIRST THINGS FIRST. EARLY TONIGHT THE SKIES WERE MAINLY CLEAR BUT THE GRADIENTS ARE TURNING MORE STRONGLY ONSHORE. EXPECT MARINE LAYER CLOUDS TO FORM AND DEEPEN TO 5000 FEET OVERNIGHT...DEEP ENOUGH FOR PATCHY DRIZZLE SATURDAY MORNING. A POWERFUL 170KT JET DIGS THE TROUGH SOUTHWARD ON SATURDAY NIGHT. STRONG SOUTHWEST FLOW AHEAD OF THE TROUGH WILL TAP INTO DEEP LAYER MOISTURE AIMED AT SOUTH-CENTRAL CALIFORNIA. LIGHT RAIN WILL BEGIN SUNDAY IN THE WAA PATTERN SET UP BY MILD SOUTHWEST WINDS AHEAD OF THE TROUGH...WITH MOST OF THE RAIN WILL FALL OVER THE SAN BERNARDINO MOUNTAINS DUE TO UPSLOPE FLOW OF THE NEARLY SATURATED AIRMASS AIDED BY 30-40 KT 850 MB WINDS. RAIN IS ALSO POSSIBLE ACROSS ORANGE COUNTY AND IN THE INLAND EMPIRE...WITH LESSER CHANCES OF RAIN FARTHER SOUTH IN SAN DIEGO COUNTY ON SUNDAY. BUT THAT WILL ALL CHANGE SUNDAY NIGHT AND RAIN WILL BECOME MORE WIDESPREAD. THE STRONG SOUTHWEST WINDS ALOFT HAVE A DEEP MOISTURE SOURCE TO TAP INTO AND BRING A PW BULLSEYE OF 1.25" INTO SOCAL SUNDAY EVENING. STRONG UPPER DYNAMICS...LOW LEVEL FORCING AND DEEP LAYER MOISTURE WILL BRING SEVERAL HOURS OF WET WEATHER BEGINNING AROUND 03Z SUNDAY IN ORANGE AND NW SAN BERNARDINO COUNTIES...AND THEN ACROSS RIVERSIDE AND SAN DIEGO COUNTIES THROUGH 12Z SUNDAY. SNOW LEVELS WILL HOVER AROUND 4500-5000 FEET IN SAN BERNARDINO COUNTY AND 500-5500 FEET IN SAN DIEGO COUNTY. CURRENT QPF TOTALS OF 1 TO 1.50" INCHES LOOK ON TARGET FOR COASTAL AND VALLEYS SECTIONS. HIGHER AMTS OF 2-4" ON THE COASTAL SLOPES OF SAN BERNARDINO AND ORANGE COUNTIES DUE TO STRONG OROGRAPHICS IN THE SOUTHERLY WINDS AHEAD OF THE TROUGH. MUCH OF THIS WILL BE SNOW ABOVE 5000 FEET...A WINTER STORM WARNING WILL LIKELY BE NEEDED FOR THIS EVENT. THE HEAVY RAINFALL COULD RESULT IN AREAS OF FLOODING IN THE LOWER ELEVATIONS. EVEN THE DESERTS COULD SEE SIGNIFICANT RAIN WITH THIS PATTERN WITH A HALF AN INCH OR MORE. THE LOW WILL SWING EASTWARD EARLY MONDAY AND THE HEAVY RAIN WILL BE REPLACED BY SCATTERED SHOWERS IN THE COLD UNSTABLE CYCLONIC FLOW. WINDS WILL INCREASE SUNDAY EVENING AS THE COLD FRONT NEARS. A 130 KT JET TRACKS ACROSS SOCAL SUNDAY EVENING...AND SOUTHERLY LOW LEVEL WINDS AHEAD OF THE COLD FRONT WILL INCREASE TO 20 TO 30 MPH WITH GUSTS TO 40 MPH IN THE COASTAL AND VALLEYS ZONES WHERE WIND ADVISORIES MAY BE NEEDED. MOUNTAIN WINDS WILL BE EVEN HIGHER WITH GUSTS TO 60 MPH POSSIBLE. OVER THE COASTAL WATERS...A GALE WATCH HAS BEEN ISSUED SUNDAY AFTERNOON AND SUNDAY NIGHT FOR SOUTHWEST WINDS OF 30-40 MPH. THE TROUGH MOVES EAST MONDAY NIGHT WITH FAIR AND WARMER WEATHER TUESDAY AND WEDNESDAY. A FAST MOVING TROUGH WILL BRING US OUR NEXT CHANCE FOR SHOWERS THURSDAY. && .AVIATION... 190355Z...AREAS OF MARINE STRATUS EXPECTED TO DEVELOP RAPIDLY TONIGHT AFTER 06Z AND FILL INLAND TO THE FOOTHILLS. THE LAYER WILL DEEPEN TO AROUND 6K FT MSL BY 18Z ON SAT AND MAY PRODUCE AREAS OF DZ OR -RA AT TIMES. IFR/MVFR CIGS THAT DEVELOP OVERNIGHT WEST OF THE MOUNTAINS SHOULD RAPIDLY MIX OUT AFTER 20Z ON SAT LEAVING VFR CONDITIONS AND UNRESTRICTED VIS...EXCEPT ON THE COASTAL MOUNTAIN SLOPES WHERE THE TERRAIN WILL REMAIN LOCALLY OBSCURED. ABOVE THE MARINE LAYER...BKN CLOUDS WILL BE MOSTLY ABOVE FL120 THROUGH SAT. && .MARINE... NO ISSUES UNTIL SUNDAY WHEN A LONG S-SW FETCH WILL BUILD A LARGE SHORT PERIOD S SWELL OVER THE COASTAL WATERS. WINDS OF 25 TO 35 KNOTS WITH HIGHER GUSTS ARE POSSIBLE FROM LATE ON SUN THROUGH SUN NIGHT. A GALE WATCH HAS BEEN POSTED. THE ROUGH SEAS AND POSSIBLE GALE FORCE WINDS WILL CREATE HAZARDOUS CONDITIONS FOR SMALL CRAFT. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...SPECIAL WEATHER STATEMENT. SEE LAXSPSSGX. PZ...GALE WATCH FOR THE COASTAL WATERS SUNDAY. SEE LAXMWWSGX. && PUBLIC...MOEDE AVIATION/MARINE...JAD
Hazardous weather outlook, Mar 18, 4:30 PM PDT, 12 hours 40 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 430 PM PDT FRI MAR 18 2011 CAZ042-043-048-050-055>058-060>062-PZZ750-PZZ775-191200- ORANGE COUNTY COASTAL AREAS-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- COASTAL WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER AND OUT 30 NM-WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER EXTENDING 30 TO 60 NM OUT INCLUDING SAN CLEMENTE ISLAND- 430 PM PDT FRI MAR 18 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. A STRONG PACIFIC STORM WILL BRING RAIN...MOUNTAIN SNOW AND STRONG WINDS SUNDAY NIGHT AND MONDAY. .SPOTTER INFORMATION STATEMENT...SKYWARN SPOTTER ACTIVATION IS NOT REQUESTED FOR THIS AREA...HOWEVER WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS. MOEDE
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 8:53 PM PDT | Gale Watch | SGX | 7 hr | |
| Mar 19, 3:24 AM PDT | Gale Warning | SGX | 42 hr | |
| Mar 19, 4:14 AM PDT | High Wind Warning | SGX | San Bernardino | 44 hr |
| Mar 19, 4:14 AM PDT | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 46 hr |
| Mar 19, 4:48 AM PDT | Winter Storm Warning | SGX | Riverside, San Bernardino | 46 hr |
| Mar 19, 1:04 PM PDT | Winter Weather Advisory | SGX | San Diego | 38 hr |
Nearby
Flash Flood Watches in California, 2011Every flash flood watch in 2011
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.