Alert archive / Nevada / Red Flag Warnings in 2021
Red Flag Warning 3, NWS Las Vegas, NV
NWS Las Vegas, NV issued this red flag warning at Apr 12, 2021, 1:48 PM PDT for Inyo County, San Bernardino County, Tulare County, California; 4 counties in Nevada; Mohave County, Arizona. It took effect at Apr 13, 2021, 11:00 AM PDT. It was in force for 11 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
- Apr 12, 2021, 1:48 PM PDT (20:48 UTC)
- In effect from
- Apr 13, 2021, 11:00 AM PDT
- Expired
- Apr 13, 2021, 10:00 PM PDT
- In force
- 11 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 20:49 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 |
|---|---|---|---|
| Apr 13, 2:56 PM PDT | NON-TSTM WND GST 61 | 3 E Bishop, CA | THE ASOS AT BISHOP AIRPORT RECORDED A PEAK GUST OF 61 MPH FROM THE WEST. THIS WAS THE ONLY GUST OVER 57 MPH RECORDED AT THIS SITE FOR THE DAY. |
| Apr 13, 6:42 PM PDT | NON-TSTM WND GST 64 | 5 Nw Independence, CA | OAK CREEK RAWS RECORDED A PEAK GUST OF 64 MPH AT 642 PM. GUSTS OVER 57 MPH FROM THE WEST BEGAN AT 142 PM AND ENDED AT 842 PM. |
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, 8.8 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
- 4744 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -59 m²/s²
- 0-3 km storm-relative helicity
- -26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
949 WWUS85 KVEF 122048 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 148 PM PDT Mon Apr 12 2021 A low pressure system will move across the Great Basin Tuesday, bringing strong west to southwest winds across the region. These winds coupled with low relative humidity will bring critical fire weather conditions to much of the area on Tuesday. CAZ229-NVZ461-122200- /O.CAN.KVEF.FW.A.0003.210413T1800Z-210414T0500Z/ Lower Colorado River Valley-Lincoln County/Ely Dispatch- 148 PM PDT Mon Apr 12 2021 ...FIRE WEATHER WATCH IS CANCELLED FOR FIRE WEATHER ZONES 229 AND 461... The National Weather Service in Las Vegas has cancelled the Fire Weather Watch. Winds for FWZ 229 and 461 will remain below critical levels to the Fire Weather Watch has been canceled. However, RH will still be very low and wind will gust to near 25 mph, so some level of enhanced fire growth will be possible should there be starts. $$ CAZ226>228-131200- /O.UPG.KVEF.FW.A.0003.210413T1800Z-210414T0500Z/ /O.NEW.KVEF.FW.W.0003.210413T1800Z-210414T0500Z/ Owens Valley/Southern Inyo Forest-Death Valley National Park- Mojave Desert Including Morongo Valley/Yucca Valley- 148 PM PDT Mon Apr 12 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM PDT TUESDAY FOR WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 226, 227, AND 228... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 11 AM to 10 PM PDT Tuesday. The Fire Weather Watch is no longer in effect. * TIMING...11 am to 10 pm Tuesday. * WIND...West wind 20 to 30 mph with gusts up to 50 mph. * HUMIDITY...6 to 15 percent. * IMPACTS...Any fires that start will likely spread rapidly due to strong winds and very dry conditions. Outdoor burning is highly discouraged. The main threat for San Bernardino County is in the western and northern portions of the county. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ AZZ101-102-NVZ460-462>466-131200- /O.UPG.KVEF.FW.A.0003.210413T1800Z-210414T0500Z/ /O.NEW.KVEF.FW.W.0003.210413T1800Z-210414T0500Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau- Esmeralda and Nye County Deserts/CNC 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- 148 PM PDT Mon Apr 12 2021 /148 PM MST Mon Apr 12 2021/ ...RED FLAG WARNING IN EFFECT FROM 11 AM PDT /11 AM MST/ TO 10 PM PDT /10 PM MST/ TUESDAY FOR WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 101, 102, 460, 462, 463, 464, 465, AND 466... 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 10 PM PDT /10 PM MST/ Tuesday. The Fire Weather Watch is no longer in effect. * TIMING...11 am to 10 pm Tuesday. * WIND...Southwest to west 20 to 30 mph gusts up to 50 mph. * HUMIDITY...7 to 15 percent. * IMPACTS...Any fires that start will likely spread rapidly due to strong winds and very dry conditions. Outdoor burning is highly discouraged. 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. && $$
3 follow-up statements
463 WWUS85 KVEF 130903 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 203 AM PDT Tue Apr 13 2021 NVZ461-132115- /O.EXA.KVEF.FW.W.0003.210413T1800Z-210414T0500Z/ Lincoln County/Ely Dispatch- 203 AM PDT Tue Apr 13 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 10 PM PDT THIS EVENING FOR WIND AND LOW HUMIDITY FOR NEVADA FIRE WEATHER ZONE 461... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 11 AM this morning to 10 PM PDT this evening. * TIMING...11 am to 10 pm Tuesday. * WIND...Southwest 15 to 25 mph gusts up to 35 mph. * HUMIDITY...7 to 15 percent. * IMPACTS...Any fires that start will likely spread rapidly due to strong winds and very dry conditions. Outdoor burning is highly discouraged. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ226>228-132115- /O.CON.KVEF.FW.W.0003.210413T1800Z-210414T0500Z/ Owens Valley/Southern Inyo Forest-Death Valley National Park- Mojave Desert Including Morongo Valley/Yucca Valley- 203 AM PDT Tue Apr 13 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 10 PM PDT THIS EVENING FOR WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 226, 227, AND 228... * TIMING...11 am to 10 pm Tuesday. * WIND...For the Owens Valley and Southern Inyo Forest, 40 to 50 mph winds with gusts over 60 mph possible. For San Bernardino County, 25 to 35 mph winds with gusts up to 60 mph possible. * HUMIDITY...6 to 15 percent. * IMPACTS...Any fires that start will likely spread rapidly due to strong winds and very dry conditions. Outdoor burning is highly discouraged. The main threat for San Bernardino County is in the western and northern portions of the county. 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. && $$ AZZ101-102-NVZ460-462>466-132115- /O.CON.KVEF.FW.W.0003.210413T1800Z-210414T0500Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau- Esmeralda and Nye County Deserts/CNC Dispatch- Nye County Deserts/Las Vegas Dispatch-Sheep Range- Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 203 AM PDT Tue Apr 13 2021 /203 AM MST Tue Apr 13 2021/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 10 PM THIS EVENING FOR WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 101, 102, 460, 462, 463, 464, 465, AND 466... * TIMING...11 am to 10 pm Tuesday. * WIND...Southwest to west 20 to 30 mph gusts up to 50 mph. * HUMIDITY...7 to 15 percent. * IMPACTS...Any fires that start will likely spread rapidly due to strong winds and very dry conditions. Outdoor burning is highly discouraged. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
631 WWUS85 KVEF 131934 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 1234 PM PDT Tue Apr 13 2021 AZZ102-140500- /O.NEW.KVEF.FW.W.0004.210414T1900Z-210415T0300Z/ /O.CON.KVEF.FW.W.0003.000000T0000Z-210414T0500Z/ Northwest Deserts/Northwest Plateau- 1234 PM MST Tue Apr 13 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MST THIS EVENING AND ON WEDNESDAY FROM NOON TO 8 PM MST FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 102... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from noon to 8 PM MST Wednesday. * TIMING...through 10 pm this evening and Wednesday from noon to 8 PM. * WIND...Southwest to west 20 to 30 mph gusts up to 50 mph through this evening and southwest 20 to 25 mph gusting up to 40 mph on Wednesday. * HUMIDITY...7 to 15 percent. * IMPACTS...Any fires that start will likely spread rapidly due to strong winds and very dry conditions. Outdoor burning is highly discouraged. 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. && $$ CAZ226>228-140500- /O.CON.KVEF.FW.W.0003.000000T0000Z-210414T0500Z/ Owens Valley/Southern Inyo Forest-Death Valley National Park- Mojave Desert Including Morongo Valley/Yucca Valley- 1234 PM PDT Tue Apr 13 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 226, 227, 228... * TIMING...Through 10 pm this evening. * WIND...For the Owens Valley and Southern Inyo Forest, west 40 to 50 mph winds with gusts over 60 mph possible. For San Bernardino County, west to southwest 25 to 35 mph winds with gusts up to 60 mph possible. * HUMIDITY...6 to 15 percent. * IMPACTS...Any fires that start will likely spread rapidly due to strong winds and very dry conditions. Outdoor burning is highly discouraged. The main threat for San Bernardino County is in the western and northern portions of the county. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ AZZ101-NVZ460>466-140500- /O.CON.KVEF.FW.W.0003.000000T0000Z-210414T0500Z/ Lake Mead NRA/Colorado River-AZ side- 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- 1234 PM PDT Tue Apr 13 2021 /1234 PM MST Tue Apr 13 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT /10 PM MST/ THIS EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 101, 460, 461, 462, 463, 464, 465, AND 466... * TIMING...Through 10 pm this evening. * WIND...Southwest to west 20 to 30 mph gusts up to 50 mph. * HUMIDITY...7 to 15 percent. * IMPACTS...Any fires that start will likely spread rapidly due to strong winds and very dry conditions. Outdoor burning is highly discouraged. 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. && $$ weather.gov/lasvegas
709 WWUS85 KVEF 140442 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 942 PM PDT Tue Apr 13 2021 AZZ102-141900- /O.EXP.KVEF.FW.W.0003.000000T0000Z-210414T0500Z/ /O.CON.KVEF.FW.W.0004.210414T1900Z-210415T0300Z/ Northwest Deserts/Northwest Plateau- 942 PM MST Tue Apr 13 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MST WEDNESDAY FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 102... ...RED FLAG WARNING WILL EXPIRE AT 10 PM MST THIS EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 102... * TIMING...Wednesday from noon to 8 PM. * WIND...Southwest 20 to 25 mph gusting up to 40 mph on Wednesday. * HUMIDITY...7 to 15 percent. * IMPACTS...Any fires that start will likely spread rapidly due to strong winds and very dry conditions. Outdoor burning is highly discouraged. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ226>228-140545- /O.EXP.KVEF.FW.W.0003.000000T0000Z-210414T0500Z/ Owens Valley/Southern Inyo Forest-Death Valley National Park- Mojave Desert Including Morongo Valley/Yucca Valley- 942 PM PDT Tue Apr 13 2021 ...RED FLAG WARNING WILL EXPIRE AT 10 PM PDT THIS EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 226, 227, 228... Gusty southwest winds have decreased across much of the region this evening, with gusts generally less than 35 mph. A few isolated areas are still seeing gusts over 35 mph, but are expected to decrease over the next few hours. $$ AZZ101-NVZ460>466-140545- /O.EXP.KVEF.FW.W.0003.000000T0000Z-210414T0500Z/ Lake Mead NRA/Colorado River-AZ side- Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 942 PM PDT Tue Apr 13 2021 /942 PM MST Tue Apr 13 2021/ ...RED FLAG WARNING WILL EXPIRE AT 10 PM PDT /10 PM MST/ THIS EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 101, 460, 461, 462, 463, 464, 465, AND 466... Gusty southwest winds have decreased across much of the region this evening, with gusts generally less than 35 mph. A few isolated areas are still seeing gusts over 35 mph, but are expected to decrease over the next few hours. $$ 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 12, 2:57 AM PDT | High Wind Watch | VEF | Inyo, San Bernardino | 11 hr |
| Apr 12, 1:47 PM PDT | High Wind Warning | VEF | Inyo, San Bernardino | 36 hr |
| Apr 12, 1:47 PM PDT | Wind Advisory | VEF | Inyo, San Bernardino | 36 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.