Alert archive / Nevada / Red Flag Warnings in 2020

Red Flag Warning 27, NWS Las Vegas, NV

September 6, 20204 counties in Nevada; Inyo County, San Bernardino County, Tulare County, California; Mohave County, Arizona

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

TimeReportWhereRemark
Sep 8, 4:45 AM PDTNON-TSTM WND GST 6615 Nnw Amargosa Valley, NVYUCCA MOUNTAIN ARL SORD SENSOR OYMAB MEASURED A GUST OF 66 MPH AT 445AM.
Sep 8, 5:41 AM PDTNON-TSTM WND GST 5912 Sw Elgin, NVKANE SPRINGS RAWS SENSOR KNSN2 MEASURED A GUST OF 59 MPH AT 541AM.
Sep 8, 6:51 AM PDTNON-TSTM WND DMG1 Wsw North Las Vegas A, NVLAS VEGAS FIRE RESCUE REPORTED A POWER POLE ARCING AND A POWER OUTAGE ON EL CASTANO AVE AT 0651AM.
Sep 8, 6:51 AM PDTNON-TSTM WND DMG2 Nw The Strip, NVLAS VEGAS FIRE RESCUE REPORTED A TREE DOWN ON A POWER BOX ON S. VALLEY VIEW AND SIRIUS AT 0651AM.
Sep 8, 7:06 AM PDTNON-TSTM WND DMG4 N Spring Valley, NVDOWNED POWER LINES REPORTEDLY CAUSED A WATER HEATER TO EXPLODE AT A RESIDENCE IN THE WEST CENTRAL LAS VEGAS VALLEY.
Sep 8, 8:00 AM PDTNON-TSTM WND DMG2 Nnw The Strip, NVTV 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 PDTNON-TSTM WND DMG3 Ese Summerlin, NVA 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 PDTNON-TSTM WND DMG3 Ese Summerlin, NVAROUND 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 PDTNON-TSTM WND DMG2 Nnw Railroad Pass, NVA TREE ESTIMATED TO BE ABOUT 20 FEET TALL WAS BLOWN DOWN BY STRONG WINDS IN SOUTHEAST HENDERSON.
Sep 8, 8:49 AM PDTNON-TSTM WND GST 61Nellis Afb, NVA PEAK WIND GUST OF 61 MPH WAS RECORDED AT NELLIS AFB.
Sep 8, 9:53 AM PDTNON-TSTM WND GST 585 Nne Bullhead City, AZ
Sep 8, 10:00 AM PDTNON-TSTM WND DMG1 Ene Fort Mohave, AZIN 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 PDTNON-TSTM WND DMG1 Ene Fort Mohave, AZSTRONG 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 PDTNON-TSTM WND GST 613 Sw Laughlin, NVA PEAK GUST OF 61 MPH WAS MEASURED BY A SENSOR AT THE NV ENERGY SITE.
Sep 8, 10:30 AM PDTNON-TSTM WND DMG9 Nne Bullhead City, AZCORRECTS 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 PDTNON-TSTM WND GST 669 W Golden Valley, AZA 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 PDTNON-TSTM WND GST 669 W Golden Valley, AZA 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 PDTNON-TSTM WND GST 623 Sw Laughlin, NVA 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 PDTNON-TSTM WND DMG9 Nne Bullhead City, AZSTRONG WIND BLEW DOWN A POWER LINE AND KNOCKED OUT POWER TO KATHERINE LANDING.
Sep 8, 1:15 PM PDTNON-TSTM WND DMG2 Nne Kingman, AZA HOME LOST ITS ROOF DUE TO HIGH WINDS IN THE KINGMAN AREA.
Sep 8, 1:15 PM PDTNON-TSTM WND DMG2 Nne Kingman, AZSTRONG 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 PDTWILDFIRE3 Wnw Forest Falls, CAEL 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.

Skew-T log-pSkew-T log-p diagram, Las Vegas, NV at 12:00Z on 2020-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Las Vegas, NV at 12:00Z on 2020-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -63 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

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 Twitter

The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 6, 1:35 AM PDTHigh Wind WatchVEF38 hr
Sep 6, 1:33 PM PDTWind AdvisoryVEFClark, Esmeralda, Lincoln, Nye3 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.