Alert archive / California / Red Flag Warnings in 2007
Red Flag Warning 4, NWS San Diego, CA
NWS San Diego, CA issued this red flag warning at Jan 18, 2007, 8:54 AM PST for 4 counties in California. It took effect at Jan 18, 2007, 9:00 AM PST. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 18, 2007, 8:54 AM PST (16:54 UTC)
- In effect from
- Jan 18, 2007, 9:00 AM PST
- Expired
- Jan 18, 2007, 7:00 PM PST
- In force
- 10 hr
- Issued by
- NWS San Diego, CA
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 16:54 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, 4.9 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
- 1322 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS86 KSGX 181654 RFWSGX RED FLAG WARNING NATIONAL WEATHER SERVICE SAN DIEGO CA 854 AM PST THU JAN 18 2007 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM THIS EVENING FOR SAN BERNARDINO NATIONAL FOREST...TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST...THE INLAND EMPIRE...THE SANTA ANA MOUNTAINS...THE SAN BERNARDINO COUNTY MOUNTAINS...THE RIVERSIDE COUNTY MOUNTAINS...DUE TO VERY LOW HUMIDITY AND GUSTY NORTHEAST WINDS... .THE LOW PRESSURE SYSTEM TO THE SOUTH IS CAUSING AN INCREASE IN THE NORTHEAST WINDS AND HAS PULLER VERY DRY AIR OVER SOUTHWEST CALIFORNIA. RELATIVE HUMIDITY IS ALREADY BELOW 15 PERCENT AT SEVERAL LOCATIONS AND WINDS ARE GUSTING OVER 35 MPH. THESE RED FLAG CONDITIONS ARE EXPECTED TO BECOME WIDESPREAD BY LATE MORNING AND CONTINUE INTO THE EVENING HOURS. NORTHEAST WINDS WILL CONTINUE TO GUST OVER 35 MPH TONIGHT AND FRIDAY...BUT AN INCREASE IN MOISTURE IS EXPECTED TONIGHT AS THE LOW MOVES INLAND ACROSS NORTHERN BAJA CALIFORNIA. CAZ248-255>257-190200- /O.NEW.KSGX.FW.W.0004.070118T1700Z-070120T0300Z/ SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY RANGER DISTRICTS OF THE SAN BERNARDINO NATIONAL FOREST-RIVERSIDE COUNTY MOUNTAINS- INCLUDING THE SAN JACINTO RANGER DISTRICT OF THE SAN BERNARDINO NATIONAL FOREST-SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 854 AM PST THU JAN 18 2007 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM PST FRIDAY FOR THE SAN BERNARDINO NATIONAL FOREST...THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST...THE INLAND EMPIRE...THE SANTA ANA MOUNTAINS...THE SAN BERNARDINO COUNTY MOUNTAINS...THE RIVERSIDE COUNTY MOUNTAINS...DUE TO VERY LOW HUMIDITY AND GUSTY NORTHEAST WINDS... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM PST FRIDAY. NORTHEAST WINDS 25 MPH WITH GUSTS 35 TO 50 MPH ARE LIKELY THROUGH THIS EVENING. RELATIVE HUMIDITY WILL BE BELOW 15 PERCENT UNTIL 7 PM. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY THAT WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. $$ BALFOUR
2 follow-up statements
000 WWUS86 KSGX 182214 AAA RFWSGX RED FLAG WARNING...UPDATED NATIONAL WEATHER SERVICE SAN DIEGO CA 214 PM PST THU JAN 18 2007 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM THIS EVENING FOR SAN BERNARDINO NATIONAL FOREST...TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST...THE INLAND EMPIRE...THE SANTA ANA MOUNTAINS...THE SAN BERNARDINO COUNTY MOUNTAINS...THE RIVERSIDE COUNTY MOUNTAINS...DUE TO VERY LOW HUMIDITY AND GUSTY NORTHEAST WINDS... .THE LOW PRESSURE SYSTEM TO THE SOUTH IS CAUSING AN INCREASE IN THE NORTHEAST WINDS AND HAS PULLER VERY DRY AIR OVER SOUTHWEST CALIFORNIA. RELATIVE HUMIDITY IS ALREADY BELOW 15 PERCENT AT SEVERAL LOCATIONS AND WINDS ARE GUSTING OVER 35 MPH. THESE RED FLAG CONDITIONS ARE EXPECTED TO BECOME WIDESPREAD BY LATE MORNING AND CONTINUE INTO THE EVENING HOURS. NORTHEAST WINDS WILL CONTINUE TO GUST OVER 35 MPH TONIGHT AND FRIDAY...BUT AN INCREASE IN MOISTURE IS EXPECTED TONIGHT AS THE LOW MOVES INLAND ACROSS NORTHERN BAJA CALIFORNIA. CAZ248-255>257-190300- /O.EXT.KSGX.FW.W.0004.000000T0000Z-070119T0300Z/ SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY RANGER DISTRICTS OF THE SAN BERNARDINO NATIONAL FOREST-RIVERSIDE COUNTY MOUNTAINS- INCLUDING THE SAN JACINTO RANGER DISTRICT OF THE SAN BERNARDINO NATIONAL FOREST-SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 214 PM PST THU JAN 18 2007 ...RED FLAG WARNING NOW IN EFFECT UNTIL 7 PM PST THIS EVENING... THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 7 PM PST THIS EVENING. NORTHEAST WINDS 25 MPH WITH GUSTS 35 TO 50 MPH ARE LIKELY THROUGH THIS EVENING. RELATIVE HUMIDITY WILL BE BELOW 15 PERCENT UNTIL 7 PM. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY THAT WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. $$
000 WWUS86 KSGX 190238 RFWSGX RED FLAG WARNING NATIONAL WEATHER SERVICE SAN DIEGO CA 638 PM PST THU JAN 18 2007 CAZ248-255>257-190345- /O.EXP.KSGX.FW.W.0004.000000T0000Z-070119T0300Z/ SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY RANGER DISTRICTS OF THE SAN BERNARDINO NATIONAL FOREST-RIVERSIDE COUNTY MOUNTAINS- INCLUDING THE SAN JACINTO RANGER DISTRICT OF THE SAN BERNARDINO NATIONAL FOREST-SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 638 PM PST THU JAN 18 2007 ...RED FLAG WARNING WILL EXPIRE AT 7 PM PST THIS EVENING... THE RED FLAG WARNING WILL EXPIRE AT 7 PM PST THIS EVENING. $$
Nearby
Red Flag Warnings in California, 2007Every red flag warning in 2007
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.