Alert archive / Nevada / Red Flag Warnings in 2021
Red Flag Warning 19, NWS Las Vegas, NV
NWS Las Vegas, NV issued this red flag warning at Jun 24, 2021, 3:08 AM PDT for Clark County, Lincoln County, Nye County, Nevada; Mohave County, Arizona. It took effect at Jun 24, 2021, 11:00 AM PDT. It was in force for 9 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
- Jun 24, 2021, 3:08 AM PDT (10:08 UTC)
- In effect from
- Jun 24, 2021, 11:00 AM PDT
- Expired
- Jun 24, 2021, 8:00 PM PDT
- In force
- 9 hr
- Issued by
- NWS Las Vegas, NV
Counties Mohave County, AZ, Clark County, NV, Lincoln County, NV, Nye County, NV
The radar
The Las Vegas radar (KESX), 134 km from the middle of the area, began a volume at 10:10 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 24, 1:30 PM PDT | TSTM WND GST 64 | 15 Nnw Amargosa Valley, NV | |
| Jun 24, 6:27 PM PDT | TSTM WND GST 73 | 38 Wsw Blue Eagle Ranch, NV | MESONET STATION PANN2 PANCAKE RAWS, ELEVATION 5165 FEET. |
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 00:00Z, 10.1 hours before the alert went out and 74 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
- 26 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 2371 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
185 WWUS85 KVEF 241008 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 308 AM PDT Thu Jun 24 2021 AZZ101-102-NVZ461-463>466-242300- /O.NEW.KVEF.FW.W.0019.210624T1800Z-210625T0300Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau-Lincoln County/Ely Dispatch- Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 308 AM PDT Thu Jun 24 2021 /308 AM MST Thu Jun 24 2021/ ...RED FLAG WARNING IN EFFECT FROM 11 AM PDT /11 AM MST/ THIS MORNING TO 8 PM PDT /8 PM MST/ THIS EVENING FOR FOR DRY LIGHTNING POTENTIAL... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 11 AM PDT /11 AM MST/ this morning to 8 PM PDT /8 PM MST/ this evening. * AFFECTED AREA...In Arizona...Fire weather zone 101 and mainly north of Interstate 40 in fire weather zone 102. In Nevada... Fire weather zones 461, 463, 464, 465, and 466. * TIMING...Isolated thunderstorms will develop late this morning, increase in coverage this afternoon, before diminishing in the evening. * WIND...Gusty and erratic thunderstorm outflow up to 40 mph possible. * HUMIDITY...12 to 20 percent below 4000 feet. 20 to 30 percent above 4000 feet. * THUNDERSTORMS...Expected to produce occasional lightning with very little accumulating rain. * IMPACTS...In storms that produce little rain, lightning sparked fires are a concern and outflow winds from these storms could cause fire to spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of lightning, very little rain and gusty outflow winds can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
2 follow-up statements
440 WWUS85 KVEF 241749 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 1049 AM PDT Thu Jun 24 2021 AZZ101-102-NVZ461-463>466-250300- /O.CON.KVEF.FW.W.0019.210624T1800Z-210625T0300Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau-Lincoln County/Ely Dispatch- Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 1049 AM PDT Thu Jun 24 2021 /1049 AM MST Thu Jun 24 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT /8 PM MST/ THIS EVENING FOR FOR DRY LIGHTNING POTENTIAL... * AFFECTED AREA...In Arizona...Fire weather zone 101 and mainly north of Interstate 40 in fire weather zone 102. In Nevada... Fire weather zones 461, 463, 464, 465, and 466. * TIMING...Isolated thunderstorms will increase in coverage this afternoon and diminish in the evening. * WIND...Gusty and erratic thunderstorm outflow up to 40 mph possible. * HUMIDITY...12 to 20 percent below 4000 feet. 20 to 30 percent above 4000 feet. * THUNDERSTORMS...Expected to produce occasional lightning with very little accumulating rain. * IMPACTS...In storms that produce little rain, lightning sparked fires are a concern, and outflow winds from these storms could cause fires to spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of lightning, very little rain and gusty outflow winds can contribute to extreme fire behavior. && $$ Morgan weather.gov/lasvegas
336 WWUS85 KVEF 250248 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 748 PM PDT Thu Jun 24 2021 AZZ101-102-NVZ461-463>466-250400- /O.EXP.KVEF.FW.W.0019.000000T0000Z-210625T0300Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau-Lincoln County/Ely Dispatch- Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 748 PM PDT Thu Jun 24 2021 /748 PM MST Thu Jun 24 2021/ ...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT /8 PM MST/ THIS EVENING FOR FOR DRY LIGHTNING POTENTIAL... Thunderstorm activity will continue to diminish this evening. The Red Flag Warning will be allowed to expire. $$ 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 24, 1:00 PM PDT | Areal Flood Advisory | VEF | Clark | 3 hr |
| Jun 24, 1:11 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 20 min |
| Jun 24, 3:07 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 38 min |
| Jun 24, 12:35 PM PDT | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Jun 24, 2:46 PM PDT | Areal Flood Advisory | VEF | Mohave | 3 hr |
Nearby
Red Flag Warnings in Nevada, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.