Alert archive / Nevada / Red Flag Warnings in 2020
Red Flag Warning 27, NWS Las Vegas, NV
NWS Las Vegas, NV issued this red flag warning at Sep 6, 2020, 1:16 PM PDT for 4 counties in Nevada; Inyo County, San Bernardino County, Tulare County, California; Mohave County, Arizona. It took effect at Sep 7, 2020, 11:00 AM PDT. It was in force for 55 hr. 22 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
- Sep 6, 2020, 1:16 PM PDT (20:16 UTC)
- In effect from
- Sep 7, 2020, 11:00 AM PDT
- Expired
- Sep 9, 2020, 6:00 PM PDT
- In force
- 55 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 20:21 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 |
|---|---|---|---|
| Sep 8, 4:45 AM PDT | NON-TSTM WND GST 66 | 15 Nnw Amargosa Valley, NV | YUCCA MOUNTAIN ARL SORD SENSOR OYMAB MEASURED A GUST OF 66 MPH AT 445AM. |
| Sep 8, 5:41 AM PDT | NON-TSTM WND GST 59 | 12 Sw Elgin, NV | KANE SPRINGS RAWS SENSOR KNSN2 MEASURED A GUST OF 59 MPH AT 541AM. |
| Sep 8, 6:51 AM PDT | NON-TSTM WND DMG | 1 Wsw North Las Vegas A, NV | LAS VEGAS FIRE RESCUE REPORTED A POWER POLE ARCING AND A POWER OUTAGE ON EL CASTANO AVE AT 0651AM. |
| Sep 8, 6:51 AM PDT | NON-TSTM WND DMG | 2 Nw The Strip, NV | LAS VEGAS FIRE RESCUE REPORTED A TREE DOWN ON A POWER BOX ON S. VALLEY VIEW AND SIRIUS AT 0651AM. |
| Sep 8, 7:06 AM PDT | NON-TSTM WND DMG | 4 N Spring Valley, NV | DOWNED POWER LINES REPORTEDLY CAUSED A WATER HEATER TO EXPLODE AT A RESIDENCE IN THE WEST CENTRAL LAS VEGAS VALLEY. |
| Sep 8, 8:00 AM PDT | NON-TSTM WND DMG | 2 Nnw The Strip, NV | TV NEWS VIDEO SHOWED A TREE BLOWN INTO POWER LINES NEAR DESERT INN AND DECATUR CAUSING A POWER OUTAGE. AROUND 5,600 NV ENERGY CUSTOMERS WERE WITHOUT POWER AT ONE POINT THIS MORNING DUE TO STRONG NORTH WINDS CAUSING MULTIPLE DOWNED POWER LINES. |
| Sep 8, 8:00 AM PDT | NON-TSTM WND DMG | 3 Ese Summerlin, NV | A LARGE STREET LIGHT BLOWN OVER BY STRONG NORTH WINDS PARTIALLY BLOCKED A NEIGHBORHOOD STREET IN THE WEST LAS VEGAS VALLEY. |
| Sep 8, 8:00 AM PDT | NON-TSTM WND DMG | 3 Ese Summerlin, NV | AROUND THE LAS VEGAS VALLEY BETWEEN 651 AM AND NOON, SEVERAL TREES, STREET SIGNS, STREET LIGHTS, AND POWER LINES WERE BLOWN DOWN BY STRONG NORTH WINDS. |
| Sep 8, 8:45 AM PDT | NON-TSTM WND DMG | 2 Nnw Railroad Pass, NV | A TREE ESTIMATED TO BE ABOUT 20 FEET TALL WAS BLOWN DOWN BY STRONG WINDS IN SOUTHEAST HENDERSON. |
| Sep 8, 8:49 AM PDT | NON-TSTM WND GST 61 | Nellis Afb, NV | A PEAK WIND GUST OF 61 MPH WAS RECORDED AT NELLIS AFB. |
| Sep 8, 9:53 AM PDT | NON-TSTM WND GST 58 | 5 Nne Bullhead City, AZ | |
| Sep 8, 10:00 AM PDT | NON-TSTM WND DMG | 1 Ene Fort Mohave, AZ | IN THE FORT MOHAVE/MOHAVE VALLEY/BULLHEAD CITY AREA, STRONG NORTH WINDS BLEW DOWN NUMEROUS POWER LINES, BLEW OVER A TRUCK/TRAILER COMBO ON HIGHWAY 68, AND DESTROYED A METAL BUILDING AT THE FINDLAY USED CAR CENTER BETWEEN 1000 AM AND 100 PM. |
| Sep 8, 10:00 AM PDT | NON-TSTM WND DMG | 1 Ene Fort Mohave, AZ | STRONG NORTH WINDS HAMPERED EFFORTS TO EXTINGUISH A STRUCTURE FIRE IN FORT MOHAVE RESULTING IN A TOTAL LOSS OF THE STRUCTURE. |
| Sep 8, 10:20 AM PDT | NON-TSTM WND GST 61 | 3 Sw Laughlin, NV | A PEAK GUST OF 61 MPH WAS MEASURED BY A SENSOR AT THE NV ENERGY SITE. |
| Sep 8, 10:30 AM PDT | NON-TSTM WND DMG | 9 Nne Bullhead City, AZ | CORRECTS TIME OF PREVIOUS NON-TSTM WND DMG REPORT FROM 9 NNE BULLHEAD CITY. STRONG WIND BLEW DOWN A POWER LINE AND KNOCKED OUT POWER TO KATHERINE LANDING. |
| Sep 8, 10:52 AM PDT | NON-TSTM WND GST 66 | 9 W Golden Valley, AZ | A PEAK GUST OF 66 MPH WAS MEASURED BY THE UNION PASS RAWS NEAR SR 68 BETWEEN BULLHEAD CITY AND GOLDEN VALLEY. HIGH WINDS LASTED FROM 1052 TO 1152 AM. |
| Sep 8, 10:52 AM PDT | NON-TSTM WND GST 66 | 9 W Golden Valley, AZ | A PEAK GUST OF 66 MPH WAS MEASURED BY THE UNION PASS RAWS NEAR SR 68 BETWEEN BULLHEAD CITY AND GOLDEN VALLEY. |
| Sep 8, 12:10 PM PDT | NON-TSTM WND GST 62 | 3 Sw Laughlin, NV | A PEAK GUST OF 62 MPH WAS MEASURED BY A SENSOR AT THE NV ENERGY SITE. HIGH WINDS BEGAN AT 920 AM AND ENDED AT 100 PM. |
| Sep 8, 12:15 PM PDT | NON-TSTM WND DMG | 9 Nne Bullhead City, AZ | STRONG WIND BLEW DOWN A POWER LINE AND KNOCKED OUT POWER TO KATHERINE LANDING. |
| Sep 8, 1:15 PM PDT | NON-TSTM WND DMG | 2 Nne Kingman, AZ | A HOME LOST ITS ROOF DUE TO HIGH WINDS IN THE KINGMAN AREA. |
| Sep 8, 1:15 PM PDT | NON-TSTM WND DMG | 2 Nne Kingman, AZ | STRONG WINDS IN THE KINGMAN AREA BLEW DOWN CABLE LINES AND BLEW THE ROOF OFF A HOUSE BETWEEN 1000 AM AND 115 PM. |
| Sep 9, 6:00 PM PDT | WILDFIRE | 3 Wnw Forest Falls, CA | EL DORADO FIRE. THE FIRE HAS BEEN BURNING SINCE SEPTEMBER 5. ON SEPTEMBER 9TH DURING THE AFTERNOON IT CROSSED HIGHWAY 38 UNEXPECTEDLY. THE FIRE THEN BURNED AGGRESSIVELY NORTHWARD. THE STATE HIGHWAY IS CLOSED IN BOTH DIRECTIONS. THE FIRE IS 12,610 ACRES AND EVA |
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, 8.3 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
- 4524 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -63 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
104 WWUS85 KVEF 062016 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 116 PM PDT Sun Sep 6 2020 .North to northwest winds will begin to develop across portions of the southern Great Basin on Monday with stronger north winds increasing behind a cold front and becoming more widespread on Tuesday. NVZ460>462-070430- /O.UPG.KVEF.FW.A.0014.200907T1800Z-200909T0600Z/ /O.NEW.KVEF.FW.W.0027.200907T1800Z-200909T0600Z/ Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- 116 PM PDT Sun Sep 6 2020 ...RED FLAG WARNING IN EFFECT FROM 11 AM MONDAY TO 11 PM PDT TUESDAY FOR 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 Monday to 11 PM PDT Tuesday. The Fire Weather Watch is no longer in effect. * TIMING...Winds will increase late Monday morning and continue throughout the afternoon and evening. A cold front will enhance the winds further on Tuesday with the strongest winds expected on Tuesday morning and early afternoon. * WIND...North to northwest winds at 15 to 25 mph with gusts to 35 mph on Monday. North winds 20 to 30 mph with gusts 35 to 45 mph on Tuesday. * HUMIDITY...6 to 12 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. && $$ AZZ101-102-CAZ226>229-NVZ463>466-070430- /O.UPG.KVEF.FW.A.0014.200908T1500Z-200909T0600Z/ /O.NEW.KVEF.FW.W.0027.200908T1500Z-200909T0600Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau- Owens Valley/Southern Inyo Forest-Death Valley National Park- Mojave Desert Including Morongo Valley/Yucca Valley- Lower Colorado River Valley-Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 116 PM PDT Sun Sep 6 2020 /116 PM MST Sun Sep 6 2020/ ...RED FLAG WARNING IN EFFECT FROM 8 AM PDT /8 AM MST/ TO 11 PM PDT /11 PM MST/ TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 8 AM PDT /8 AM MST/ to 11 PM PDT /11 PM MST/ Tuesday. The Fire Weather Watch is no longer in effect. * TIMING...North winds will increase across the area on Tuesday with the strongest winds expected during the late morning and afternoon hours. * WIND...Widespread north winds at 20 to 30 mph with gusts of 35 to 45 mph along with localized wind gusts of 50 to 60 mph. * HUMIDITY...6 to 12 percent * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
7 follow-up statements
138 WWUS85 KVEF 070423 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 923 PM PDT Sun Sep 6 2020 .Strong winds will begin to develop across portions of the southern Great Basin on Monday afternoon with stronger north to northeast winds increasing behind a cold front and becoming more widespread on Tuesday. NVZ460>462-072300- /O.CON.KVEF.FW.W.0027.200907T1800Z-200909T0600Z/ Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- 923 PM PDT Sun Sep 6 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM MONDAY TO 11 PM PDT TUESDAY FOR WINDS AND LOW RELATIVE HUMIDITY... * TIMING...Winds will increase late Monday morning and continue throughout the afternoon and evening. A cold front will enhance the winds further on Tuesday with the strongest winds expected on Tuesday morning and early afternoon. * WIND...North to northwest winds at 15 to 25 mph with gusts to 35 mph on Monday. North winds 20 to 30 mph with gusts 35 to 45 mph on Tuesday. * HUMIDITY...6 to 12 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. && $$ AZZ101-102-CAZ226>229-NVZ463>466-072300- /O.CON.KVEF.FW.W.0027.200908T1500Z-200909T0600Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau- Owens Valley/Southern Inyo Forest-Death Valley National Park- Mojave Desert Including Morongo Valley/Yucca Valley- Lower Colorado River Valley-Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 923 PM PDT Sun Sep 6 2020 /923 PM MST Sun Sep 6 2020/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM PDT /8 AM MST/ TO 11 PM PDT /11 PM MST/ TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY... * TIMING...North winds will increase across the area Tuesday with the strongest winds expected during the morning and afternoon hours. * WIND...Widespread north winds at 20 to 30 mph with gusts of 35 to 45 mph along with localized wind gusts of 50 to 60 mph. * HUMIDITY...6 to 12 percent * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
820 WWUS85 KVEF 072210 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 310 PM PDT Mon Sep 7 2020 .Strong northerly winds will increase and become more widespread on Tuesday as a cold front sweeps south through the region. An extention of the warning beyond 11 pm this evening into Wednesday is possible especially in the Colorado River Valley. NVZ460>462-081200- /O.CON.KVEF.FW.W.0027.000000T0000Z-200909T0600Z/ Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- 310 PM PDT Mon Sep 7 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY FOR WINDS AND LOW RELATIVE HUMIDITY... * TIMING...Winds will continue through the evening. A cold front will enhance the winds further on Tuesday with the strongest winds expected Tuesday morning into the early afternoon. * WIND...North to northwest winds at 15 to 25 mph with gusts to 35 mph through this evening. North winds 20 to 30 mph with gusts 35 to 45 mph on Tuesday. * HUMIDITY...6 to 12 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. && $$ AZZ101-102-CAZ226>229-NVZ463>466-081200- /O.CON.KVEF.FW.W.0027.200908T1500Z-200909T0600Z/ Lake Mead NRA/Colorado River-AZ side- Northwest Deserts/Northwest Plateau- Owens Valley/Southern Inyo Forest-Death Valley National Park- Mojave Desert Including Morongo Valley/Yucca Valley- Lower Colorado River Valley-Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- Lake Mead NRA/Colorado River-NV side- 310 PM PDT Mon Sep 7 2020 /310 PM MST Mon Sep 7 2020/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM PDT /8 AM MST/ TO 11 PM PDT /11 PM MST/ TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY... * TIMING...North winds will increase across the area Tuesday with the strongest winds expected during the morning and afternoon hours. * WIND...Widespread north winds at 20 to 30 mph with gusts of 35 to 45 mph along with localized wind gusts of 50 to 60 mph. * HUMIDITY...6 to 12 percent * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
712 WWUS85 KVEF 080947 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 247 AM PDT Tue Sep 8 2020 .Strong northerly winds will increase and become more widespread today as a cold front sweeps south through the region. Red Flag Warning has been extended down the Colorado River Valley through Wednesday afternoon. AZZ101-CAZ229-NVZ466-082300- /O.EXT.KVEF.FW.W.0027.200908T1500Z-200910T0100Z/ Lake Mead NRA/Colorado River-AZ side-Lower Colorado River Valley- Lake Mead NRA/Colorado River-NV side- 247 AM PDT Tue Sep 8 2020 /247 AM MST Tue Sep 8 2020/ ...RED FLAG WARNING NOW IN EFFECT FROM 8 AM PDT /8 AM MST/ THIS MORNING TO 6 PM PDT /6 PM MST/ WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY... * TIMING...A cold front will enhance north winds today with the strongest winds expected this morning into the early afternoon. Winds will remain elevated through Wednesday afternoon. * WIND...Widespread north winds at 20 to 30 mph with gusts of 35 to 45 mph along with localized wind gusts of 50 to 60 mph. * HUMIDITY...6 to 12 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. && $$ NVZ460>462-082300- /O.CON.KVEF.FW.W.0027.000000T0000Z-200909T0600Z/ Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- 247 AM PDT Tue Sep 8 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR WINDS AND LOW RELATIVE HUMIDITY... * TIMING...A cold front will enhance north winds today with the strongest winds expected this morning into the early afternoon. * WIND...Widespread north winds at 20 to 30 mph with gusts of 35 to 45 mph along with localized wind gusts of 50 mph. * HUMIDITY...6 to 12 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ AZZ102-CAZ226>228-NVZ463>465-082300- /O.CON.KVEF.FW.W.0027.200908T1500Z-200909T0600Z/ Northwest Deserts/Northwest Plateau- Owens Valley/Southern Inyo Forest-Death Valley National Park- Mojave Desert Including Morongo Valley/Yucca Valley-Sheep Range- Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- 247 AM PDT Tue Sep 8 2020 /247 AM MST Tue Sep 8 2020/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM PDT /8 AM MST/ THIS MORNING TO 11 PM PDT /11 PM MST/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... * TIMING...A cold front will enhance north winds today with the strongest winds expected this morning into the early afternoon. * WIND...Widespread north winds at 20 to 30 mph with gusts of 35 to 45 mph along with localized wind gusts of 50 mph. * HUMIDITY...6 to 12 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. && $$ weather.gov/lasvegas
863 WWUS85 KVEF 082136 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 236 PM PDT Tue Sep 8 2020 .Strong northerly winds will increase and become more widespread today as a cold front sweeps south through the region. Red Flag Warning has been extended down the Colorado River Valley through Wednesday afternoon. AZZ102-CAZ226>228-NVZ460>465-090600- /O.CON.KVEF.FW.W.0027.000000T0000Z-200909T0600Z/ Northwest Deserts/Northwest Plateau- Owens Valley/Southern Inyo Forest-Death Valley National Park- Mojave Desert Including Morongo Valley/Yucca Valley- Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- 236 PM PDT Tue Sep 8 2020 /236 PM MST Tue Sep 8 2020/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT /11 PM MST/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... * TIMING...Gusty winds will continue through the evening before decreasing. * WIND...Widespread north winds at 20 to 30 mph with gusts of 35 to 45 mph along with localized gusts of 50 mph. * HUMIDITY...6 to 12 percent * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ AZZ101-CAZ229-NVZ466-091200- /O.CON.KVEF.FW.W.0027.000000T0000Z-200910T0100Z/ Lake Mead NRA/Colorado River-AZ side-Lower Colorado River Valley- Lake Mead NRA/Colorado River-NV side- 236 PM PDT Tue Sep 8 2020 /236 PM MST Tue Sep 8 2020/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT /6 PM MST/ WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY... * TIMING...Winds will remain elevated through Wednesday afternoon. * WIND...North winds 20 to 30 mph with gusts 35 to 45 mph through the evening then 15 to 25 mph with gusts around 40 mph. * HUMIDITY...6 to 12 percent. Overnight recovery 20 to 25 percent. 6-12 percent Wednesday afternoon. * 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. && $$ weather.gov/lasvegas
526 WWUS85 KVEF 090536 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 1036 PM PDT Tue Sep 8 2020 .Strong northerly winds will persist in the Colorado River Valley through Wednesday afternoon, with lesser winds expected elsewhere. AZZ102-CAZ226>228-NVZ460>465-090645- /O.EXP.KVEF.FW.W.0027.000000T0000Z-200909T0600Z/ Northwest Deserts/Northwest Plateau- Owens Valley/Southern Inyo Forest-Death Valley National Park- Mojave Desert Including Morongo Valley/Yucca Valley- Esmeralda and Nye County Deserts/CNC Dispatch- Lincoln County/Ely Dispatch-Nye County Deserts/Las Vegas Dispatch- Sheep Range-Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- 1036 PM PDT Tue Sep 8 2020 /1036 PM MST Tue Sep 8 2020/ ...RED FLAG WARNING WILL EXPIRE AT 11 PM PDT /11 PM MST/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... Winds had begun to subside this evening. Although there will be spotty gusty winds Wednesday, widespread critical fire weather conditions are not expected. The Red Flag Warning will expire on schedule. $$ AZZ101-CAZ229-NVZ466-091630- /O.CON.KVEF.FW.W.0027.000000T0000Z-200910T0100Z/ Lake Mead NRA/Colorado River-AZ side-Lower Colorado River Valley- Lake Mead NRA/Colorado River-NV side- 1036 PM PDT Tue Sep 8 2020 /1036 PM MST Tue Sep 8 2020/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT /6 PM MST/ WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY... * TIMING...Winds will remain elevated through Wednesday afternoon. * WIND...North winds 15 to 25 mph with gusts to 35 mph overnight, then 25 to 35 mph with gusts to 45 mph during the day. * HUMIDITY...Overnight recovery 20 to 25 percent, then falling to 6 to 12 percent Wednesday afternoon. * 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. && $$ Morgan weather.gov/lasvegas
562 WWUS85 KVEF 090923 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 223 AM PDT Wed Sep 9 2020 .Strong northerly winds will persist in the Colorado River Valley through this afternoon, with lesser winds expected elsewhere. AZZ101-CAZ229-NVZ466-100100- /O.CON.KVEF.FW.W.0027.000000T0000Z-200910T0100Z/ Lake Mead NRA/Colorado River-AZ side-Lower Colorado River Valley- Lake Mead NRA/Colorado River-NV side- 223 AM PDT Wed Sep 9 2020 /223 AM MST Wed Sep 9 2020/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT /6 PM MST/ THIS AFTERNOON FOR WIND AND LOW RELATIVE HUMIDITY... * TIMING...Winds will remain elevated through this afternoon. * WIND...North winds 15 to 25 mph with gusts to 35 mph overnight, then 25 to 35 mph with gusts to 45 mph during the day. * HUMIDITY...Overnight recovery 20 to 25 percent, then falling to 6 to 12 percent this afternoon. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
597 WWUS85 KVEF 100056 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 556 PM PDT Wed Sep 9 2020 AZZ101-CAZ229-NVZ466-100200- /O.EXP.KVEF.FW.W.0027.000000T0000Z-200910T0100Z/ Lake Mead NRA/Colorado River-AZ side-Lower Colorado River Valley- Lake Mead NRA/Colorado River-NV side- 556 PM PDT Wed Sep 9 2020 /556 PM MST Wed Sep 9 2020/ ...RED FLAG WARNING WILL EXPIRE AT 6 PM PDT /6 PM MST/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... Winds have dropped below Red Flag Warning criteria. Therefore, the warning has been allowed to expire for the Colorado River Valley. $$ weather.gov/lasvegas
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Las Vegas, NV wrote its last area forecast discussion before this red flag warning went out at Sep 6, 11:05 AM PDT, 2 hours 11 minutes earlier.
Area forecast discussion, Sep 6, 11:05 AM PDT, 2 hours 11 minutes before
Area Forecast Discussion
National Weather Service Las Vegas NV
1105 AM PDT Sun Sep 6 2020
.SYNOPSIS...Dry conditions and record breaking heat continues
through the remainder of Labor Day weekend across the Desert
Southwest. A brief break from the heat will come midweek along with
gusty northerly winds, particularly down the Colorado River Valley.
Temperatures will heat back up to the triple digits by the end of
the week into next weekend.
&&
.UPDATE...Forecast continues to remain on track with another day of
record breaking temperatures. Smoke continues to pour over the
Sierra and into the Owens Valley, reducing visibility to under a
mile at times, particularly around Bishop from the Creek Fire.
Additional smoke is making its way into the Owens Valley from the
SQF Complex and Rattlesnake Fires. The excessive heat warning
continues for many locations through Monday.
&&
.SHORT TERM...Today through Labor Day.
Daily heat records were broken at all of our climate sites
yesterday, with Kingman, AZ, Barstow-Daggett, CA and Death Valley
National Park breaking all-time September records as well. This will
continue to be the case for the remainder of Labor Day weekend, as
the lingering ridge of high pressure remains over the Desert
Southwest.
Smoke has funneled down into the Owens Valley this evening, bringing
Bishop Airport down to a 4 statute mile visibility that is expected
to continue through the remainder of the overnight hours and into
tomorrow. Used HRRR smoke to fill in portions of southwestern Nevada
and southeastern California with patchy smoke through the morning
and early afternoon. Cloud development over the higher terrain
expected again this afternoon, though nothing in the way of
precipitation expected. That said, an isolated brief thunderstorm
cannot be ruled out over the eastern Sierra in far northwestern
Inyo County.
Ahead of the incoming cold front late Monday into early Tuesday,
northerly winds will begin to push through the southern Great Basin
on Monday. Due to potential wind speeds 15-25 mph with gusts to 35
mph coupled with critically dry relative humidities, we have issued
a Fire Weather Watch for our northern zones (Esmeralda, southern Nye
and northern Lincoln counties) Monday that will continue through
Tuesday.
.LONG TERM...Tuesday through Saturday.
No surprises offered up by the latest GEFS guidance.
Timing/placement of potent trough digging south through the
northern/central Rockies Monday/Tuesday has stayed consistent. Cold
front slicing through the region will usher in a period of strong
winds along with much cooler temperatures Tuesday/Wednesday that may
jolt the senses.
Wind: Along and just behind the cold front, the GFS shows several 50
kt wind flags over southern Clark and northeastern San Bernardino
counties Tuesday. ECMWF Ensemble meteogram for KIFP shows a 12 hour
period between 11 am and 11 pm Tuesday of wind gusts of 50 mph or
greater for Laughlin/Bullhead City. The winds will create concerns
for land management agencies, boaters and travelers. Fuels remain
ripe to burn and the onset of high winds and low RH is not a good
combination. Therefore, a Fire Weather Watch has been issued for the
entire southern Great Basin and Mojave Desert on Tuesday through
Tuesday evening. Thank goodness the cold front arrives after Labor
Day so everyone could enjoy the area lakes, because 3-4 foot
significant wave heights are forecast for Lake Mead, Lake Mohave and
Lake Havasu on Tuesday due to wind gusts ranging from 50 to 60 mph
along portions of the Colorado River Valley. As a result, we have
hoisted a High Wind Watch for these zones from 6 am to 6 pm on
Tuesday; boating conditions will be dangerous and winds will make
travel difficult for high profile vehicles. Look for additional wind
products coming out of this office in the coming days, as models
continue to resolve potential wind and wind gust speeds.
Temperatures: GEFS shows a 15-25 degree temperature change between
Labor Day and Tuesday for northwestern Arizona, southern Nevada and
eastern San Bernardino County. Less cooling further west in Inyo
County, Esmeralda County, and the western Mojave Desert where
temperatures drop around 10-15 degrees. As the trough weakens and
shifts east late week into the weekend, temperatures will quickly
recover back above normal under a ridge of high pressure.
&&
.FIRE WEATHER...A cold front will push through the region and bring
with it gusty north-northwesterly winds. The winds will first pick
up in our northern zones (Esmeralda, southern Nye, Lincoln County)
on Monday, but will become widespread, encompassing our entire
forecast area on Tuesday. Due to the critically dry low-levels,
these winds will enhance fire danger concerns. As a result, we have
issued a Fire Weather Watch for our northern zones on Monday,
followed by the remainder of our forecast area on Tuesday. Wind
gusts will range from 35 to 45 mph in most regions, with higher
elevations as well as along the Colorado River Valley seeing gusts
in excess of 50 mph.
&&
.CLIMATE...
DAILY RECORD HIGH MAXIMUM TEMPERATURES
SUN 9/6 MON 9/7
Las Vegas, NV 110 (1955)* 108 (1977)*
Bishop, CA 103 (1955)* 100 (1955)*
Barstow, CA 110 (1955)* 109 (1955)*
Needles, CA 114 (1924)* 116 (1923)*
Kingman, AZ 104 (1955)* 105 (1932)*
Death Valley 119 (1955)* 121 (1932)*
*-Current forecast is close to the record.
&&
.AVIATION...For McCarran...Minimal impacts expected again today for
KLAS however winds will likely differ from typical diurnal patterns.
Light and variable winds are expected initially before becoming
generally easterly this afternoon as usual, however, by late this
afternoon, a shift to west-northwest winds aoa 8-10 kts is possible
which could persist through the early morning hours tomorrow.
Tomorrow afternoon, northerly winds are expected to move in, staying
generally at or below 10 kts. So while winds should stay relatively
light, directions are expected to be atypical. Winds will increase
substantially Tuesday and out of the north as a cold front moves in.
For the rest of southern Nevada, northwest Arizona and southeast
California...Most significant impacts regionally will be focused on
KBIH as smoke from the Creek Fire have spread over the Sierra crest
and filtered down the Owens Valley. Visibility has been reduced to
1SM at times this morning and wind projections show that smoke
impacts could keep visibility fluctuating between MVFR/IFR
conditions through the TAF period. Elsewhere, VFR with minimal
impacts expected.
&&
.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather or impacts according to standard operating
procedures.
&&
SHORT TERM...Czyzyk
FIRE WEATHER...Varian
LONG TERM...Pierce/Varian
AVIATION...Boucher
CLIMATE...Guillet
For more forecast information...see us on our webpage:
https://weather.gov/lasvegas or follow us on Facebook and TwitterThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 1:35 AM PDT | High Wind Watch | VEF | 38 hr | |
| Sep 6, 1:33 PM PDT | Wind Advisory | VEF | Clark, Esmeralda, Lincoln, Nye | 3 days |
Nearby
Red Flag Warnings in Nevada, 2020Red Flag Warnings in California, 2020Red Flag Warnings in Arizona, 2020Every red flag warning in 2020
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.