Alert archive / Arizona / Red Flag Warnings in 2021
Red Flag Warning 1, NWS Las Vegas, NV
NWS Las Vegas, NV issued this red flag warning at Mar 2, 2021, 2:20 PM MST for Mohave County, Arizona. It took effect at Mar 3, 2021, 11:00 AM MST. It was in force for 7 hr. 2 reports 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
- Mar 2, 2021, 2:20 PM MST (21:20 UTC)
- In effect from
- Mar 3, 2021, 11:00 AM MST
- Expired
- Mar 3, 2021, 6:00 PM MST
- In force
- 7 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 21:22 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 |
|---|---|---|---|
| Mar 3, 5:51 PM MST | NON-TSTM WND GST 59 | 4 E New Kingman-Butler, AZ | THE KINGMAN AIRPORT AWOS SITE RECORDED A PEAK WIND GUST OF 59 MPH AT 5:51 MT. |
| Mar 3, 6:00 PM MST | NON-TSTM WND DMG | Kingman, AZ | MOHAVE COUNTY EMERGENCY MANAGER RELAYED A REPORT OF A DOWNED POWER LINE IN THE CITY OF KINGMAN DUE TO HIGH WIND GUSTS. EXACT LOCATION UNKNOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 9.3 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
- 3762 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
872 WWUS85 KVEF 022120 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 120 PM PST Tue Mar 2 2021 AZZ102-031100- /O.UPG.KVEF.FW.A.0001.210303T1800Z-210304T0100Z/ /O.NEW.KVEF.FW.W.0001.210303T1800Z-210304T0100Z/ Northwest Deserts/Northwest Plateau- 220 PM MST Tue Mar 2 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 6 PM MST WEDNESDAY FOR STRONG SOUTH WINDS AND LOW RELATIVE HUMIDITY... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 11 AM to 6 PM MST Wednesday. This replaces the Fire Weather Watch previously in effect. * AFFECTED AREA...In Arizona...Fire weather zone 102...primarily for central and southern Mohave. * TIMING...11 am to 6 pm MST Wednesday. * WIND...South to southeast 20 to 30 mph with gusts up to 45 mph in the afternoon. * MINIMUM HUMIDITY...10 to 15 percent. * IMPACTS...A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. Any fires that develop will likely spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Outdoor burning is not recommended. Heed all fire restrictions. && $$ weather.gov/lasvegas
2 follow-up statements
123 WWUS85 KVEF 031024 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 224 AM PST Wed Mar 3 2021 AZZ102-040100- /O.CON.KVEF.FW.W.0001.210303T1800Z-210304T0100Z/ Northwest Deserts/Northwest Plateau- 324 AM MST Wed Mar 3 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM MST THIS EVENING FOR STRONG SOUTH WINDS AND LOW RELATIVE HUMIDITY... * AFFECTED AREA...In Arizona...Fire weather zone 102...primarily for central and southern Mohave County. * TIMING...11 am to 6 pm MST Wednesday. * WIND...South to southeast 20 to 30 mph with gusts up to 45 mph in the afternoon. * MINIMUM HUMIDITY...10 to 15 percent. * IMPACTS...A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. Any fires that develop will likely spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Outdoor burning is not recommended. Heed all fire restrictions. && $$ weather.gov/lasvegas
850 WWUS85 KVEF 040044 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 444 PM PST Wed Mar 3 2021 AZZ102-040145- /O.EXP.KVEF.FW.W.0001.000000T0000Z-210304T0100Z/ Northwest Deserts/Northwest Plateau- 544 PM MST Wed Mar 3 2021 ...RED FLAG WARNING WILL EXPIRE AT 6 PM MST THIS EVENING FOR STRONG SOUTH WINDS AND LOW RELATIVE HUMIDITY... Winds have dissipated this afternoon and moisture has started to increase ahead of a weather system moving through the region. Expect this trend to continue overnight with slowly weakening winds and RH values around 20 to 30 percent. $$ weather.gov/lasvegas
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 2, 3:45 AM MST | Fire Weather Watch | VEF | Mohave | 11 hr |
| Mar 2, 2:12 PM MST | Wind Advisory | VEF | 28 hr |
Nearby
Red Flag Warnings in Arizona, 2021Every red flag warning in 2021
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.