Alert archive / Nevada / Red Flag Warnings in 2021
Red Flag Warning 17, NWS Las Vegas, NV
NWS Las Vegas, NV issued this red flag warning at Jun 20, 2021, 2:06 PM PDT for 4 counties in Nevada; Inyo County, San Bernardino County, Tulare County, California; Mohave County, Arizona. It took effect at Jun 22, 2021, 11:00 AM PDT. 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
- Jun 20, 2021, 2:06 PM PDT (21:06 UTC)
- In effect from
- Jun 22, 2021, 11:00 AM PDT
- Expired
- Jun 22, 2021, 9:00 PM PDT
- In force
- 10 hr
- Issued by
- NWS Las Vegas, NV
Counties Mohave County, AZ, Inyo County, CA, San Bernardino County, CA, Tulare County, CA, Clark County, NV, Esmeralda County, NV, Lincoln County, NV, Nye County, NV
The radar
The Las Vegas radar (KESX), 160 km from the middle of the area, began a volume at 21:08 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, 9.1 hours before the alert went out and 71 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
- 4353 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
168 WWUS85 KVEF 202106 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 206 PM PDT Sun Jun 20 2021 NVZ462>465-211800- /O.NEW.KVEF.FW.W.0016.210621T1900Z-210622T0400Z/ /O.NEW.KVEF.FW.W.0017.210622T1800Z-210623T0400Z/ Nye County Deserts/Las Vegas Dispatch-Sheep Range- Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- 206 PM PDT Sun Jun 20 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG WINDS AND LOW HUMIDITY FOR PARTS OF CLARK, SOUTHERN AND CENTRAL NYE COUNTIES... ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 9 PM PDT TUESDAY FOR STRONG WINDS AND LOW HUMIDITY FOR PARTS OF CLARK, SOUTHERN AND CENTRAL NYE COUNTIES... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from noon to 9 PM PDT Monday. a Red Flag Warning has also been issued from 11 AM to 9 PM PDT Tuesday. * AFFECTED AREA...In Nevada...Fire weather zones 462, 463, 464, and 465. * TIMING...Winds will increase each day by noon, remain gusty in the afternoon before decreasing in the evening hours. * WIND...South to southwest 20 to 25 mph with gusts 35 to 40 mph. * HUMIDITY...Minimum values 4 to 10 percent. * 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. && $$ AZZ101-102-CAZ229-NVZ460-461-466-211800- /O.NEW.KVEF.FW.W.0017.210622T1800Z-210623T0400Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau-Lower Colorado River Valley- Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Lake Mead NRA/Colorado River-NV side- 206 PM PDT Sun Jun 20 2021 /206 PM MST Sun Jun 20 2021/ ...RED FLAG WARNING IN EFFECT FROM 11 AM PDT /11 AM MST/ TO 9 PM PDT /9 PM MST/ TUESDAY FOR STRONG WINDS AND LOW HUMIDITY FOR THE REST OF SOUTHERN NEVADA AND NORTHWEST ARIZONA. The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 11 AM PDT /11 AM MST/ to 9 PM PDT /9 PM MST/ Tuesday. * AFFECTED AREA...In Arizona...Fire weather zones 101 and 102. In California...Fire weather zone 229. In Nevada...Fire weather zones 460, 461, and 466. * TIMING...Winds will increase by late morning, remain gusty through the afternoon before decreasing in the evening. * WIND...South to southwest 20 to 25 mph with gusts 35 to 40 mph. * HUMIDITY...Minimum values 4 to 10 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
5 follow-up statements
833 WWUS85 KVEF 211751 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 1051 AM PDT Mon Jun 21 2021 NVZ462>465-220400- /O.CON.KVEF.FW.W.0016.210621T1900Z-210622T0400Z/ /O.CON.KVEF.FW.W.0017.210622T1800Z-210623T0400Z/ Nye County Deserts/Las Vegas Dispatch-Sheep Range- Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- 1051 AM PDT Mon Jun 21 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR PARTS OF CLARK, SOUTHERN AND CENTRAL NYE COUNTIES... ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM PDT TUESDAY FOR STRONG WINDS AND LOW HUMIDITY FOR PARTS OF CLARK, SOUTHERN AND CENTRAL NYE COUNTIES... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from noon to 9 PM PDT Monday. A Red Flag Warning has also been issued from 11 AM to 9 PM PDT Tuesday. * AFFECTED AREA...In Nevada...Fire weather zones 462, 463, 464, and 465. * TIMING...Winds will increase each day by noon, peak in the afternoon, and decrease in the evening hours. * WIND...South to southwest 20 to 25 mph with gusts 35 to 40 mph. * HUMIDITY...Minimum values 4 to 10 percent. * 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. && $$ AZZ101-102-CAZ229-NVZ460-461-466-220400- /O.CON.KVEF.FW.W.0017.210622T1800Z-210623T0400Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau-Lower Colorado River Valley- Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Lake Mead NRA/Colorado River-NV side- 1051 AM PDT Mon Jun 21 2021 /1051 AM MST Mon Jun 21 2021/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM PDT /11 AM MST/ TO 9 PM PDT /9 PM MST/ TUESDAY FOR STRONG WINDS AND LOW HUMIDITY FOR PORTIONS OF SOUTHERN NEVADA, SOUTHEAST CALIFORNIA, AND NORTHWEST ARIZONA... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 11 AM PDT /11 AM MST/ to 9 PM PDT /9 PM MST/ Tuesday. * AFFECTED AREA...In Arizona...Fire weather zones 101 and 102. In California...Fire weather zone 229. In Nevada...Fire weather zones 460, 461, and 466. * TIMING...Winds will increase late in the morning, peak in the afternoon, and decrease in the evening. * WIND...South to southwest 20 to 25 mph with gusts 35 to 40 mph. * HUMIDITY...Minimum values 4 to 10 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ Morgan weather.gov/lasvegas
871 WWUS85 KVEF 220359 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 859 PM PDT Mon Jun 21 2021 NVZ462>465-221400- /O.EXP.KVEF.FW.W.0016.000000T0000Z-210622T0400Z/ /O.CON.KVEF.FW.W.0017.210622T1800Z-210623T0400Z/ Nye County Deserts/Las Vegas Dispatch-Sheep Range- Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- 859 PM PDT Mon Jun 21 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM PDT TUESDAY FOR STRONG WINDS AND LOW HUMIDITY FOR PARTS OF CLARK, SOUTHERN AND CENTRAL NYE COUNTIES... * AFFECTED AREA...In Nevada...Fire weather zones 462, 463, 464, and 465. * TIMING...Winds will increase by noon Tuesday, peak in the afternoon, and decrease Tuesday evening. * WIND...South to southwest 20 to 25 mph with gusts 35 to 40 mph. * HUMIDITY...Minimum values 4 to 10 percent. * 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. && $$ AZZ101-102-CAZ229-NVZ460-461-466-221400- /O.CON.KVEF.FW.W.0017.210622T1800Z-210623T0400Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau-Lower Colorado River Valley- Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Lake Mead NRA/Colorado River-NV side- 859 PM PDT Mon Jun 21 2021 /859 PM MST Mon Jun 21 2021/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM PDT TO 9 PM PDT TUESDAY FOR STRONG WINDS AND LOW HUMIDITY FOR PORTIONS OF SOUTHERN NEVADA, SOUTHEAST CALIFORNIA, AND NORTHWEST ARIZONA... * AFFECTED AREA...In Arizona...Fire weather zones 101 and 102. InCalifornia...Fire weather zone 229. In Nevada...Fire weather zones 460, 461, and 466. * TIMING...Winds will increase late Tuesday morning, peak in the afternoon, and decrease Tuesday evening. * WIND...South to southwest 20 to 25 mph with gusts 35 to 40 mph. * HUMIDITY...Minimum values 4 to 10 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
110 WWUS85 KVEF 221026 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 326 AM PDT Tue Jun 22 2021 CAZ226-227-222300- /O.EXA.KVEF.FW.W.0017.210622T1800Z-210623T0400Z/ Owens Valley/Southern Inyo Forest-Death Valley National Park- 326 AM PDT Tue Jun 22 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 9 PM PDT THIS EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR PORTIONS OF SOUTHEAST CALIFORNIA... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 11 AM this morning to 9 PM PDT this evening. * AFFECTED AREA...In California...Fire weather zones 226 and 227. * TIMING...Winds will increase late this morning, peak in the afternoon, and decrease this evening. * WIND...Southwest 20 to 25 mph with gusts 35 to 40 mph. * HUMIDITY...Minimum values 4 to 10 percent. * IMPACTS...Any fires that develop or are ongoing 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. && $$ AZZ101-102-CAZ229-NVZ460>466-222300- /O.CON.KVEF.FW.W.0017.210622T1800Z-210623T0400Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau-Lower Colorado River Valley- Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 326 AM PDT Tue Jun 22 2021 /326 AM MST Tue Jun 22 2021/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM PDT /11 AM MST/ THIS MORNING TO 9 PM PDT /9 PM MST/ THIS EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR PORTIONS OF SOUTHEAST CALIFORNIA, SOUTHERN NEVADA AND NORTHWEST ARIZONA... * AFFECTED AREA...In Arizona...Fire weather zones 101 and 102. In California...Fire weather zone 229. In Nevada...Fire weather zones 460, 461, 462, 463, 464, 465 and 466. * TIMING...Winds will increase late this morning, peak in the afternoon, and decrease this evening. * WIND...South to southwest 20 to 25 mph with gusts 35 to 40 mph. * HUMIDITY...Minimum values 4 to 10 percent. * IMPACTS...Any fires that develop or are ongoing will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
699 WWUS85 KVEF 222119 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 219 PM PDT Tue Jun 22 2021 AZZ101-102-CAZ229-NVZ461>466-230400- /O.NEW.KVEF.FW.W.0018.210623T1600Z-210624T0300Z/ /O.CON.KVEF.FW.W.0017.000000T0000Z-210623T0400Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau-Lower Colorado River Valley- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 219 PM PDT Tue Jun 22 2021 /219 PM MST Tue Jun 22 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT /9 PM MST/ THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 101, 102, 229, 461, 462, 463, 464, 465, AND 466... ...RED FLAG WARNING IN EFFECT FROM 9 AM PDT /9 AM MST/ TO 8 PM PDT /8 PM MST/ WEDNESDAY FOR DRY LIGHTNING FOR FIRE WEATHER ZONES 101, 102, 229, 461, 462, 463, 464, 465, AND 466... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 9 AM PDT /9 AM MST/ to 8 PM PDT /8 PM MST/ Wednesday. * AFFECTED AREA...Fire weather zones 101 and 102. Fire weather zone 229. Fire weather zones 461, 462, 463, 464, 465, and 466. * TIMING...Winds will decrease this evening. Thunderstorm chances will increase late Wednesday morning and continue through the evening. * WIND...South to southwest 20 to 25 mph with gusts 35 to 40 mph this evening. Gusty and erratic winds near thunderstorms Wednesday. * HUMIDITY...Minimum values 4 to 10 percent this afternoon. Higher humidity on Wednesday. * IMPACTS...Any fires that develop or are ongoing 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. && $$ CAZ226-227-NVZ460-230400- /O.CON.KVEF.FW.W.0017.000000T0000Z-210623T0400Z/ Owens Valley/Southern Inyo Forest-Death Valley National Park- Esmeralda and Nye County Deserts/CNC Dispatch- 219 PM PDT Tue Jun 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 226, 227, AND 460... * AFFECTED AREA...Fire weather zones 226 and 227. Fire weather zone 460. * TIMING...Winds will decrease this evening. * WIND...South to southwest 20 to 25 mph with gusts 35 to 40 mph. * HUMIDITY...Minimum values 4 to 10 percent. * IMPACTS...Any fires that develop or are ongoing will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ Morgan
525 WWUS85 KVEF 230352 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 852 PM PDT Tue Jun 22 2021 AZZ101-102-CAZ229-NVZ461>466-231400- /O.EXP.KVEF.FW.W.0017.000000T0000Z-210623T0400Z/ /O.CON.KVEF.FW.W.0018.210623T1600Z-210624T0300Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau-Lower Colorado River Valley- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 852 PM PDT Tue Jun 22 2021 /852 PM MST Tue Jun 22 2021/ ...RED FLAG WARNING IN EFFECT FROM 9 AM PDT TO 8 PM PDT WEDNESDAY FOR DRY LIGHTNING FOR FIRE WEATHER ZONES 101, 102, 229, 461, 462, 463, 464, 465, AND 466... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 9 AM PDT to 8 PM PDT Wednesday. * AFFECTED AREA...Fire weather zones 101 and 102. Fire weather zone 229. Fire weather zones 461, 462, 463, 464, 465, and 466. * TIMING...Thunderstorm chances with dry lightning potential will increase late Wednesday morning and continue through the evening. Winds have decreased this evening and will no longer create high fire danger tonight or tomorrow. * WIND...Gusty and erratic winds near thunderstorms Wednesday. * HUMIDITY...RH values will improve overnight. RH of 20 to 30 percent is expected for Wednesday afternoon. * IMPACTS...Outdoor burning is not recommended. The very dry conditions coupled with an increasing chance for lightning could potentially initiate new fire starts. 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. && $$ CAZ226-227-NVZ460-230500- /O.EXP.KVEF.FW.W.0017.000000T0000Z-210623T0400Z/ Owens Valley/Southern Inyo Forest-Death Valley National Park- Esmeralda and Nye County Deserts/CNC Dispatch- 852 PM PDT Tue Jun 22 2021 ...RED FLAG WARNING WILL EXPIRE AT 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 226, 227, AND 460... Winds have fallen below critical values and a slight increase in moisture has started over the region. $$ weather.gov/lasvegas
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 2:06 PM PDT | Red Flag Warning | VEF | Clark, Lincoln, Nye | 31 hr |
Nearby
Red Flag Warnings in Nevada, 2021Red Flag Warnings in California, 2021Red 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.