Alert archive / Arizona / Red Flag Warnings in 2018
Red Flag Warning 3, NWS Las Vegas, NV
NWS Las Vegas, NV issued this red flag warning at Apr 27, 2018, 1:24 PM MST for Mohave County, Arizona. It took effect at Apr 28, 2018, 11:00 AM MST. It was in force for 32 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
- Apr 27, 2018, 1:24 PM MST (20:24 UTC)
- In effect from
- Apr 28, 2018, 11:00 AM MST
- Expired
- Apr 29, 2018, 7:00 PM MST
- In force
- 32 hr
- Issued by
- NWS Las Vegas, NV
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 102 km from the middle of the area, began a volume at 20:21 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
Las Vegas, NV (KVEF), launched 12:00Z, 8.4 hours before the alert went out and 177 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
- 3715 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
286 WWUS85 KVEF 272024 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 124 PM PDT Fri Apr 27 2018 .Dry fuels combined with low humidity and strong winds will lead to a period of enhanced fire danger across Mohave county Saturday and Sunday afternoons. AZZ102-280430- /O.NEW.KVEF.FW.W.0003.180428T1800Z-180430T0200Z/ Northwest Deserts/Northwest Plateau- 124 PM MST Fri Apr 27 2018 ...RED FLAG WARNING IN EFFECT FROM 11 AM SATURDAY TO 7 PM MST SUNDAY FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONE 102... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 11 AM Saturday to 7 PM MST Sunday. * AFFECTED AREA...In Arizona...Fire weather zone 102. * TIMING...Gusty conditions will develop Saturday afternoon and evening, subside overnight, and return Sunday. * WIND...Winds of 20 to 30 mph with gusts of 35 to 40 mph. * HUMIDITY...Minimum relative humidity values of 5 to 10 percent Saturday, slightly higher relative humidity on Sunday but still below 15% during the afternoon and evening. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
6 follow-up statements
469 WWUS85 KVEF 280420 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 920 PM PDT Fri Apr 27 2018 .Dry fuels combined with low humidity and strong winds will lead to a period of enhanced fire danger across Mohave County Saturday and Sunday afternoons. AZZ102-281230- /O.CON.KVEF.FW.W.0003.180428T1800Z-180430T0200Z/ Northwest Deserts/Northwest Plateau- 920 PM MST Fri Apr 27 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SATURDAY TO 7 PM MST SUNDAY FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONE 102... * AFFECTED AREA...In Arizona...Fire weather zone 102. * TIMING...Gusty conditions will develop Saturday afternoon and evening, subside overnight, and return Sunday. * WIND...Winds of 20 to 30 mph with gusts of 35 to 40 mph. * HUMIDITY...Minimum relative humidity values of 5 to 10 percent Saturday, slightly higher relative humidity on Sunday but still below 15% during the afternoon and evening. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
251 WWUS85 KVEF 280735 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 1235 AM PDT Sat Apr 28 2018 .Dry fuels combined with low humidity and strong winds will lead to periods of enhanced fire danger across Mohave County this afternoon and again Sunday. AZZ102-281800- /O.CON.KVEF.FW.W.0003.180428T1800Z-180430T0200Z/ Northwest Deserts/Northwest Plateau- 1235 AM MST Sat Apr 28 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM MST SUNDAY FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONE 102... * AFFECTED AREA...In Arizona...Fire weather zone 102. * TIMING...Gusty conditions will develop this afternoon and evening, subside overnight, and return Sunday. * WIND...Winds of 20 to 30 mph with gusts of 35 to 40 mph. * HUMIDITY...Minimum relative humidity values of 5 to 10 percent today, slightly higher relative humidity on Sunday but still below 15% during the afternoon and evening. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ Wolcott weather.gov/lasvegas
434 WWUS85 KVEF 281752 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 1052 AM PDT Sat Apr 28 2018 .Dry fuels combined with low humidity and strong winds will lead to periods of enhanced fire danger across Mohave County this afternoon and again Sunday. AZZ102-290000- /O.CON.KVEF.FW.W.0003.180428T1800Z-180430T0200Z/ Northwest Deserts/Northwest Plateau- 1052 AM MST Sat Apr 28 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MST SUNDAY FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONE 102... * AFFECTED AREA...In Arizona...Fire weather zone 102. * TIMING...Gusty conditions will develop this afternoon and evening, subside overnight, and return Sunday. * WIND...Winds of 20 to 30 mph with gusts of 35 to 40 mph. * HUMIDITY...Minimum relative humidity values of 5 to 10 percent today, slightly higher relative humidity on Sunday but still below 15% during the afternoon and evening. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
375 WWUS85 KVEF 282043 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 143 PM PDT Sat Apr 28 2018 .Dry fuels combined with low humidity and strong winds will lead to periods of enhanced fire danger across Mohave County this afternoon and again Sunday. AZZ102-291200- /O.CON.KVEF.FW.W.0003.000000T0000Z-180430T0200Z/ Northwest Deserts/Northwest Plateau- 143 PM MST Sat Apr 28 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MST SUNDAY FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONE 102... * AFFECTED AREA...In Arizona...Fire weather zone 102. * TIMING...Gusty conditions will develop this afternoon and evening, subside overnight, and return Sunday. * WIND...Winds of 20 to 30 mph with gusts of 35 to 40 mph. * HUMIDITY...Minimum relative humidity values of 5 to 10 percent today, slightly higher relative humidity on Sunday but still below 15% during the afternoon and evening. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
906 WWUS85 KVEF 291154 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 454 AM PDT Sun Apr 29 2018 .Dry fuels combined with low humidity and strong winds will lead to periods of enhanced fire danger across Mohave County once again this afternoon. AZZ102-300200- /O.CON.KVEF.FW.W.0003.000000T0000Z-180430T0200Z/ Northwest Deserts/Northwest Plateau- 454 AM MST Sun Apr 29 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MST THIS EVENING FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONE 102... * AFFECTED AREA...In Arizona...Fire weather zone 102. * TIMING...Gusty conditions will develop this afternoon and gradually diminish this evening. * WIND...Winds of 20 to 35 mph with gusts of 35 to 45 mph. * HUMIDITY...Minimum relative humidity values this afternoon of 5 to 10 percent in the valleys and 10 to 15 percent in the higher terrain. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ Wolcott weather.gov/lasvegas
512 WWUS85 KVEF 300138 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 638 PM PDT Sun Apr 29 2018 AZZ102-300245- /O.EXP.KVEF.FW.W.0003.000000T0000Z-180430T0200Z/ Northwest Deserts/Northwest Plateau- 638 PM MST Sun Apr 29 2018 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MST THIS EVENING FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONE 102... Winds were beginning to decrease this evening, so the Red Flag Warning will be allowed to expire. $$ Morgan weather.gov/lasvegas
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 3:09 AM MST | Wind Advisory | VEF | Mohave | 3 days |
Nearby
Red Flag Warnings in Arizona, 2018Every red flag warning in 2018
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.