Alert archive / Nevada / Red Flag Warnings in 2021
Red Flag Warning 18, NWS Las Vegas, NV
NWS Las Vegas, NV issued this red flag warning at Jun 22, 2021, 2:19 PM PDT for Clark County, Lincoln County, Nye County, Nevada; Mohave County, Arizona; San Bernardino County, California. It took effect at Jun 23, 2021, 9:00 AM PDT. It was in force for 11 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
- Jun 22, 2021, 2:19 PM PDT (21:19 UTC)
- In effect from
- Jun 23, 2021, 9:00 AM PDT
- Expired
- Jun 23, 2021, 8:00 PM PDT
- In force
- 11 hr
- Issued by
- NWS Las Vegas, NV
Counties Mohave County, AZ, San Bernardino County, CA, Clark County, NV, Lincoln County, NV, Nye County, NV
The radar
The Las Vegas radar (KESX), 94 km from the middle of the area, began a volume at 21:20 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 |
|---|---|---|---|
| Jun 23, 6:45 PM PDT | LIGHTNING | 15 E Newberry Springs, CA | LIGHTNING STRUCK A POWER POLE ALONG INTERSTATE 40 HALF A MILE EAST OF HECTOR ROAD. |
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 28 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
- 3761 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- -45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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
3 follow-up statements
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
830 WWUS85 KVEF 231319 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 619 AM PDT Wed Jun 23 2021 AZZ101-102-CAZ229-NVZ461>466-240300- /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- 619 AM PDT Wed Jun 23 2021 /619 AM MST Wed Jun 23 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT /8 PM MST/ THIS EVENING FOR DRY LIGHTNING FOR FIRE WEATHER ZONES 101, 102, 229, 461, 462, 463, 464, 465, AND 466... * AFFECTED AREA...In Arizona...Fire weather zones 101 and 102. In California...Fire weather zone 229. In Nevada...Fire weather zones 461, 462, 463, 464, 465, and 466. * TIMING...Thunderstorm chances with dry lightning potential will increase late this morning and continue through this evening. * WIND...Gusty and erratic winds near thunderstorms. * HUMIDITY...20 to 30 percent this 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. && $$ weather.gov/lasvegas
256 WWUS85 KVEF 240234 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 734 PM PDT Wed Jun 23 2021 AZZ101-102-CAZ229-NVZ461>466-240345- /O.EXP.KVEF.FW.W.0018.000000T0000Z-210624T0300Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau-Lower Colorado River Valley- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 734 PM PDT Wed Jun 23 2021 /734 PM MST Wed Jun 23 2021/ ...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT /8 PM MST/ THIS EVENING FOR DRY LIGHTNING FOR FIRE WEATHER ZONES 101, 102, 229, 461, 462, 463, 464, 465, AND 466... Lightning activity has diminished across the area. The Red Flag Warning will be allowed to expire on time at 8pm PDT/MST. $$ weather.gov/lasvegas
Nearby
Red Flag Warnings in Nevada, 2021Red Flag Warnings in Arizona, 2021Red Flag Warnings in California, 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.