Alert archive / Arizona / Red Flag Warnings in 2008
Red Flag Warning 2, NWS Las Vegas, NV
NWS Las Vegas, NV issued this red flag warning at Jan 17, 2008, 4:46 AM MST for Mohave County, Arizona; San Bernardino County, California. It took effect at Jan 17, 2008, 10:00 AM MST. It was in force for 9 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 17, 2008, 4:46 AM MST (11:46 UTC)
- In effect from
- Jan 17, 2008, 10:00 AM MST
- Expired
- Jan 17, 2008, 7:00 PM MST
- In force
- 9 hr
- Issued by
- NWS Las Vegas, NV
Counties Mohave County, AZ, San Bernardino County, CA
The radar
The Las Vegas radar (KESX), 48 km from the middle of the area, began a volume at 11:46 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 |
|---|---|---|---|
| Jan 17, 10:51 AM MST | NON-TSTM WND DMG | 4 S Fontana, CA | WIRES BLOWN DOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Mercury/Desert R, NV (KDRA), launched 00:00Z, 11.8 hours before the alert went out and 176 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
- 3096 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS85 KVEF 171146 RFWVEF RED FLAG WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 346 AM PST THU JAN 17 2008 ...LOW RELATIVE HUMIDITY VALUES AND GUSTY NORTH WINDS ARE EXPECTED ACROSS THE AREA TODAY... .GUSTY NORTH WINDS...LOW AFTERNOON RELATIVE HUMIDITY VALUES...AND A HIGH FIRE DANGER WILL PRODUCE THE POTENTIAL FOR ERRATIC FIRE BEHAVIOR. AZZ101-CAZ229-172000- /O.NEW.KVEF.FW.W.0002.080117T1700Z-080118T0200Z/ LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY- 346 AM PST THU JAN 17 2008 /446 AM MST THU JAN 17 2008/ ...RED FLAG WARNING IN EFFECT FROM 9 AM PST /10 AM MST/ THIS MORNING TO 6 PM PST /7 PM MST/ THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 9 AM PST /10 AM MST/ THIS MORNING TO 6 PM PST /7 PM MST/ THIS AFTERNOON. GUSTY NORTH WINDS OF 20 TO 25 MILES AN HOUR WITH GUSTS UP TO 35 MPH ARE EXPECTED TODAY. IN ADDITION RH VALUES WILL BE AT 15 PERCENT OR LOWER. THIS COMBINATION ALONG WITH A HIGH OR GREATER FIRE DANGER RATING ALONG THE COLORADO RIVER VALLEY HAS PROMPTED THE ISSUANCE OF A RED FLAG WARNING FOR TODAY. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. $$ 81
2 follow-up statements
000 WWUS85 KVEF 171917 RFWVEF RED FLAG WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 1117 AM PST THU JAN 17 2008 ...LOW RELATIVE HUMIDITY VALUES AND GUSTY NORTH WINDS ARE EXPECTED ACROSS THE AREA TODAY... .GUSTY NORTH WINDS...LOW AFTERNOON RELATIVE HUMIDITY VALUES...AND A HIGH FIRE DANGER WILL PRODUCE THE POTENTIAL FOR ERRATIC FIRE BEHAVIOR. AZZ101-CAZ229-180200- /O.CON.KVEF.FW.W.0002.000000T0000Z-080118T0200Z/ LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY- 1117 AM PST THU JAN 17 2008 /1217 PM MST THU JAN 17 2008/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST /7 PM MST/ THIS AFTERNOON... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST /7 PM MST/ THIS AFTERNOON FOR LAKE MEAD AND THE COLORADO RIVER VALLEY FOR LOW RELATIVE HUMIDITY AND GUSTY WINDS. NORTH WINDS OF 20 TO 25 MPH WITH GUSTS UP TO 35 MPH WILL COMBINE WITH RELATIVE HUMIDITIES OF 15 PERCENT OR LOWER AND HIGH OR GREATER FIRE DANGER TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXTREME FIRE GROWTH POTENTIAL. $$ MORGAN
000 WWUS85 KVEF 180205 RFWVEF RED FLAG WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 605 PM PST THU JAN 17 2008 AZZ101-CAZ229-180315- /O.EXP.KVEF.FW.W.0002.000000T0000Z-080118T0200Z/ LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY- 605 PM PST THU JAN 17 2008 /705 PM MST THU JAN 17 2008/ ...RED FLAG WARNING HAS EXPIRED... THE RED FLAG WARNING IS NO LONGER IN EFFECT. THE RED FLAG WARNING FOR THE LAKE MEAD NATIONAL RECREATION AREA... THE COLORADO RIVER ARIZONA SIDE AND THE LOWER COLORADO RIVER VALLEY HAS BEEN ALLOWED TO EXPIRE. ALTHOUGH LOCAL GUSTY WINDS WILL CONTINUE INTO THE EVENING HOURS... RELATIVE HUMIDITY RECOVERIES HAVE BEGUN TO TAKE PLACE WITH ALL REPORTING STATIONS EXPECTED TO BE ABOVE THE CRITICAL 15 PERCENT VALUE BY 7 PM PST / 8 PM MST THIS EVENING. THUS THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE AS OF 6 PM PST / 7 PM MST. $$
Nearby
Red Flag Warnings in Arizona, 2008Red Flag Warnings in California, 2008Every red flag warning in 2008
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.