Alert archive / Arizona / Red Flag Warnings in 2021
Red Flag Warning 11, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this red flag warning at May 21, 2021, 1:38 PM MST for Apache County, Coconino County, Navajo County, Arizona. It took effect at May 22, 2021, 11:00 AM MST. It was in force for 9 hr. 5 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
- May 21, 2021, 1:38 PM MST (20:38 UTC)
- In effect from
- May 22, 2021, 11:00 AM MST
- Expired
- May 22, 2021, 8:00 PM MST
- In force
- 9 hr
- Issued by
- NWS Flagstaff, AZ
Counties Apache County, AZ, Coconino County, AZ, Navajo County, AZ
The radar
The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 20:41 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 |
|---|---|---|---|
| May 22, 12:55 PM MST | NON-TSTM WND GST 58 | Taylor, AZ | AWOS STATION KTYL TAYLOR AIRPORT. |
| May 22, 1:03 PM MST | NON-TSTM WND GST 62 | 6 W Joseph City, AZ | MESONET STATION AZT11 I-40 @ JACK RABBIT MM 270. |
| May 22, 1:45 PM MST | NON-TSTM WND GST 59 | 10 Sse Petrified Forest, AZ | MESONET STATION AZCDT DOUBTFUL TANKS. |
| May 22, 2:56 PM MST | NON-TSTM WND GST 59 | 1 Nw Winslow, AZ | ASOS STATION KINW WINSLOW AIRPORT. |
| May 22, 3:03 PM MST | NON-TSTM WND GST 64 | 3 Ese Winslow, AZ | MESONET STATION AZT06 I-40 @ LITTLE COLO. RIVER MM 257 3E INW. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 8.6 hours before the alert went out and 121 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
- 886 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
725 WWUS85 KFGZ 212038 RFWFGZ URGENT - FIRE WEATHER MESSAGE National Weather Service Flagstaff AZ 138 PM MST Fri May 21 2021 AZZ115>117-212145- /O.CAN.KFGZ.FW.A.0010.210522T1800Z-210523T0300Z/ Western Mogollon Rim (Fire Weather Zone 115)- Eastern Mogollon Rim (Fire Weather Zone 116)- White Mountains (Fire Weather Zone 117)- 138 PM MST Fri May 21 2021 ...FIRE WEATHER WATCH IS CANCELLED... The National Weather Service in Flagstaff has upgraded the Fire Weather Watch to a Red Flag Warning. $$ AZZ109-112-230300- /O.UPG.KFGZ.FW.A.0010.210522T1800Z-210523T0300Z/ /O.NEW.KFGZ.FW.W.0011.210522T1800Z-210523T0300Z/ /O.CON.KFGZ.FW.W.0010.000000T0000Z-210522T0300Z/ Northeast Plateau And Mesas Hwy 264 Northward (Fire Weather Zone 109)- Little Colorado River Valley in Coconino County (Fire Weather Zone 112)- 138 PM MST Fri May 21 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING FOR NORTHERN ARIZONA... ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MST SATURDAY DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITY FOR NORTHEAST ARIZONA AND THE NAVAJO NATION... The National Weather Service in Flagstaff has issued a Red Flag Warning due to strong winds and low relative humidity, which is in effect from 11 AM to 8 PM MST Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Locations near Tuba City. * WINDS...South 25 to 35 mph with gusts up to 55 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring or are imminent. A combination of strong winds and low relative humidities can contribute to extreme fire behavior. Please notify field crews of this red flag warning. && $$ AZZ110-111-113-114-139-140-230300- /O.UPG.KFGZ.FW.A.0010.210522T1800Z-210523T0300Z/ /O.NEW.KFGZ.FW.W.0011.210522T1800Z-210523T0300Z/ Chinle Valley (Fire Weather Zone 110)- Chuska Mountains and Defiance Plateau (Fire Weather Zone 111)- Little Colorado River Valley in Navajo County (Fire Weather Zone 113)- Little Colorado River Valley in Apache County (Fire Weather Zone 114)-Black Mesa Area (Fire Weather Zone 139)- Northeast Plateaus and Mesas South of Hwy 264 (Fire Weather Zone 140)- 138 PM MST Fri May 21 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MST SATURDAY DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITY FOR NORTHEAST ARIZONA AND THE NAVAJO NATION... The National Weather Service in Flagstaff has issued a Red Flag Warning due to strong winds and low relative humidity, which is in effect from 11 AM to 8 PM MST Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Locations near Buffalo Pass, Chinle, Dilkon, Eagar-Springerville, Ganado, Holbrook, Kayenta, Kykotsmovi, Saint Johns, Shonto, Snowflake-Taylor, Window Rock and Winslow. * WINDS...Southwest 25 to 35 mph with gusts up to 55 mph. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring or are imminent. A combination of strong winds and low relative humidities can contribute to extreme fire behavior. Please notify field crews of this red flag warning. && $$ AZZ104>108-137-138-220300- /O.CON.KFGZ.FW.W.0010.000000T0000Z-210522T0300Z/ Kaibab Plateau (Fire Weather Zone 104)- Marble and Glen Canyons (Fire Weather Zone 105)- Grand Canyon Country (Fire Weather Zone 106)- Coconino Plateau (Fire Weather Zone 107)- Yavapai County Mountains (Fire Weather Zone 108)- Yavapai County Valleys and Basins (Fire Weather Zone 137)- Oak Creek and Sycamore Canyons (Fire Weather Zone 138)- 138 PM MST Fri May 21 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING FOR NORTHWESTERN ARIZONA... * AFFECTED AREA...Locations near Camp Verde, Chino Valley, Congress, Cottonwood, Fredonia, Grand Canyon, Jacob Lake, North Rim, Page, Paulden, Prescott, Prescott Valley, Sedona, Seligman and Valle. This includes portions of the Coconino National Forest, Kaibab National Forest, Prescott National Forest and Tonto National Forest. * WINDS...Southwest 20 to 30 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring or are imminent. A combination of strong winds and low relative humidities can contribute to extreme fire behavior. Please notify field crews of this red flag warning. && $$ For more information from the National Weather Service visit http://weather.gov/flagstaff
5 follow-up statements
320 WWUS85 KFGZ 220253 RFWFGZ URGENT - FIRE WEATHER MESSAGE National Weather Service Flagstaff AZ 753 PM MST Fri May 21 2021 AZZ109-112-221215- /O.EXP.KFGZ.FW.W.0010.000000T0000Z-210522T0300Z/ /O.CON.KFGZ.FW.W.0011.210522T1800Z-210523T0300Z/ Northeast Plateau And Mesas Hwy 264 Northward (Fire Weather Zone 109)- Little Colorado River Valley in Coconino County (Fire Weather Zone 112)- 753 PM MST Fri May 21 2021 ...RED FLAG WARNING FOR FRIDAY WILL EXPIRE AT 8 PM MST THIS EVENING FOR AREAS IN NORTH-CENTRAL ARIZONA... ...RED FLAG WARNING FOR SATURDAY REMAINS IN EFFECT FROM 11 AM TO 8 PM MST (NOON TO 9 PM NAVAJO NATION) FOR NORTHEAST ARIZONA AND THE NAVAJO NATION... * AFFECTED AREA...Locations near Tuba City, Leupp and Kaibito. * WINDS...South 20 to 30 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring or are imminent. A combination of strong winds and low relative humidities can contribute to extreme fire behavior. Please notify field crews of this red flag warning. && $$ AZZ104>108-137-138-220400- /O.EXP.KFGZ.FW.W.0010.000000T0000Z-210522T0300Z/ Kaibab Plateau (Fire Weather Zone 104)- Marble and Glen Canyons (Fire Weather Zone 105)- Grand Canyon Country (Fire Weather Zone 106)- Coconino Plateau (Fire Weather Zone 107)- Yavapai County Mountains (Fire Weather Zone 108)- Yavapai County Valleys and Basins (Fire Weather Zone 137)- Oak Creek and Sycamore Canyons (Fire Weather Zone 138)- 753 PM MST Fri May 21 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MST THIS EVENING... The Red Flag Warning for today (Friday) will be allowed to expire at 8 PM MST (9 PM Navajo Nation). Wind gusts are slowly decreasing across north-central Arizona and relative humidity will continue to rebound through the rest of this evening. $$ AZZ110-111-113-114-139-140-221215- /O.CON.KFGZ.FW.W.0011.210522T1800Z-210523T0300Z/ Chinle Valley (Fire Weather Zone 110)- Chuska Mountains and Defiance Plateau (Fire Weather Zone 111)- Little Colorado River Valley in Navajo County (Fire Weather Zone 113)- Little Colorado River Valley in Apache County (Fire Weather Zone 114)-Black Mesa Area (Fire Weather Zone 139)- Northeast Plateaus and Mesas South of Hwy 264 (Fire Weather Zone 140)- 753 PM MST Fri May 21 2021 ...RED FLAG WARNING FOR SATURDAY REMAINS IN EFFECT FROM 11 AM TO 8 PM MST (NOON TO 9 PM NAVAJO NATION) FOR NORTHEAST ARIZONA AND THE NAVAJO NATION... * AFFECTED AREA...Locations near Buffalo Pass, Chinle, Dilkon, Eagar-Springerville, Ganado, Holbrook, Kayenta, Kykotsmovi, Saint Johns, Shonto, Snowflake-Taylor, Window Rock and Winslow. * WINDS...Southwest 25 to 35 mph with gusts up to 55 mph. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring or are imminent. A combination of strong winds and low relative humidities can contribute to extreme fire behavior. Please notify field crews of this red flag warning. && $$ For more information from the National Weather Service visit http://weather.gov/flagstaff
473 WWUS85 KFGZ 220945 RFWFGZ URGENT - FIRE WEATHER MESSAGE National Weather Service Flagstaff AZ 245 AM MST Sat May 22 2021 AZZ109>114-139-140-221745- /O.CON.KFGZ.FW.W.0011.210522T1800Z-210523T0300Z/ Northeast Plateau And Mesas Hwy 264 Northward (Fire Weather Zone 109)-Chinle Valley (Fire Weather Zone 110)- Chuska Mountains and Defiance Plateau (Fire Weather Zone 111)- Little Colorado River Valley in Coconino County (Fire Weather Zone 112)- Little Colorado River Valley in Navajo County (Fire Weather Zone 113)- Little Colorado River Valley in Apache County (Fire Weather Zone 114)-Black Mesa Area (Fire Weather Zone 139)- Northeast Plateaus and Mesas South of Hwy 264 (Fire Weather Zone 140)- 245 AM MST Sat May 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MST THIS EVENING FOR SATURDAY REMAINS IN EFFECT FROM 11 AM TO 8 PM MST (NOON TO 9 PM NAVAJO NATION) FOR NORTHEAST ARIZONA AND THE NAVAJO NATION... * AFFECTED AREA...Locations near Buffalo Pass, Chinle, Dilkon, Eagar-Springerville, Ganado, Holbrook, Kayenta, Kykotsmovi, Saint Johns, Shonto, Snowflake-Taylor, Tuba City, Window Rock and Winslow. * WINDS...Southwest 25 to 35 mph with gusts 50-60 mph. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring or are imminent. A combination of strong winds and low relative humidities can contribute to extreme fire behavior. Please notify field crews of this red flag warning. && $$ For more information from the National Weather Service visit http://weather.gov/flagstaff
018 WWUS85 KFGZ 220946 RFWFGZ URGENT - FIRE WEATHER MESSAGE National Weather Service Flagstaff AZ 246 AM MST Sat May 22 2021 AZZ109>114-139-140-230300- /O.CON.KFGZ.FW.W.0011.210522T1800Z-210523T0300Z/ Northeast Plateau And Mesas Hwy 264 Northward (Fire Weather Zone 109)-Chinle Valley (Fire Weather Zone 110)- Chuska Mountains and Defiance Plateau (Fire Weather Zone 111)- Little Colorado River Valley in Coconino County (Fire Weather Zone 112)- Little Colorado River Valley in Navajo County (Fire Weather Zone 113)- Little Colorado River Valley in Apache County (Fire Weather Zone 114)-Black Mesa Area (Fire Weather Zone 139)- Northeast Plateaus and Mesas South of Hwy 264 (Fire Weather Zone 140)- 246 AM MST Sat May 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MST THIS EVENING FOR SATURDAY REMAINS IN EFFECT FROM 11 AM TO 8 PM MST (NOON TO 9 PM NAVAJO NATION) FOR NORTHEAST ARIZONA AND THE NAVAJO NATION... * AFFECTED AREA...Locations near Buffalo Pass, Chinle, Dilkon, Eagar-Springerville, Ganado, Holbrook, Kayenta, Kykotsmovi, Saint Johns, Shonto, Snowflake-Taylor, Tuba City, Window Rock and Winslow. * WINDS...Southwest 25 to 35 mph with gusts 50-60 mph. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring or are imminent. A combination of strong winds and low relative humidities can contribute to extreme fire behavior. Please notify field crews of this red flag warning. && $$ For more information from the National Weather Service visit http://weather.gov/flagstaff
193 WWUS85 KFGZ 222140 RFWFGZ URGENT - FIRE WEATHER MESSAGE National Weather Service Flagstaff AZ 240 PM MST Sat May 22 2021 AZZ109>114-139-140-230300- /O.CON.KFGZ.FW.W.0011.000000T0000Z-210523T0300Z/ Northeast Plateau And Mesas Hwy 264 Northward (Fire Weather Zone 109)-Chinle Valley (Fire Weather Zone 110)- Chuska Mountains and Defiance Plateau (Fire Weather Zone 111)- Little Colorado River Valley in Coconino County (Fire Weather Zone 112)- Little Colorado River Valley in Navajo County (Fire Weather Zone 113)- Little Colorado River Valley in Apache County (Fire Weather Zone 114)-Black Mesa Area (Fire Weather Zone 139)- Northeast Plateaus and Mesas South of Hwy 264 (Fire Weather Zone 140)- 240 PM MST Sat May 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING FOR SATURDAY REMAINS IN EFFECT FROM 11 AM TO 8 PM MST (NOON TO 9 PM NAVAJO NATION) FOR NORTHEAST ARIZONA AND THE NAVAJO NATION... * AFFECTED AREA...Locations near Buffalo Pass, Chinle, Dilkon, Eagar-Springerville, Ganado, Holbrook, Kayenta, Kykotsmovi, Saint Johns, Shonto, Snowflake-Taylor, Tuba City, Window Rock and Winslow. * WINDS...Southwest 25 to 35 mph with gusts up to 60 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring or are imminent. A combination of strong winds and low relative humidities can contribute to extreme fire behavior. Please notify field crews of this red flag warning. && $$ For more information from the National Weather Service visit http://weather.gov/flagstaff
074 WWUS85 KFGZ 230254 RFWFGZ URGENT - FIRE WEATHER MESSAGE National Weather Service Flagstaff AZ 754 PM MST Sat May 22 2021 AZZ109>114-139-140-230400- /O.EXP.KFGZ.FW.W.0011.000000T0000Z-210523T0300Z/ Northeast Plateau And Mesas Hwy 264 Northward (Fire Weather Zone 109)-Chinle Valley (Fire Weather Zone 110)- Chuska Mountains and Defiance Plateau (Fire Weather Zone 111)- Little Colorado River Valley in Coconino County (Fire Weather Zone 112)- Little Colorado River Valley in Navajo County (Fire Weather Zone 113)- Little Colorado River Valley in Apache County (Fire Weather Zone 114)-Black Mesa Area (Fire Weather Zone 139)- Northeast Plateaus and Mesas South of Hwy 264 (Fire Weather Zone 140)- 754 PM MST Sat May 22 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MST (9 PM NAVAJO NATION) THIS EVENING FOR NORTHEAST ARIZONA AND THE NAVAJO NATION... While some sub-15% relative humidity has persisted this evening in parts of northeastern Arizona, the wind speeds areawide have began to decrease over the last hour. As a result, the Red Flag Warning from today will be allowed to expire at the top of the hour since surface weather observations are no longer are supporting critical fire weather conditions across a majority of the warned zones. Expect humidity to gradually increase overnight and much lighter winds to set up over northern Arizona on Sunday. $$ For more information from the National Weather Service visit http://weather.gov/flagstaff
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 3:36 AM MST | Wind Advisory | FGZ | Apache, Coconino, Navajo, Yavapai | 40 hr |
| May 21, 4:28 AM MST | Fire Weather Watch | FGZ | Apache, Coconino, Navajo | 9 hr |
Nearby
Red 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.