Alert archive / Colorado / Red Flag Warnings in 2021

Red Flag Warning 5, NWS Grand Junction, CO

April 8, 20217 counties in Colorado

NWS Grand Junction, CO issued this red flag warning at Apr 8, 2021, 2:28 AM MDT for 7 counties in Colorado. It took effect at Apr 9, 2021, 12:00 PM MDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 8, 2021, 2:28 AM MDT (08:28 UTC)
In effect from
Apr 9, 2021, 12:00 PM MDT
Expired
Apr 9, 2021, 9:00 PM MDT
In force
9 hr
Issued by
NWS Grand Junction, CO

Counties Archuleta County, CO, Dolores County, CO, Hinsdale County, CO, La Plata County, CO, Montezuma County, CO, San Juan County, CO, San Miguel County, CO

The radar

The Grand Junction radar (KGJX), 165 km from the middle of the area, began a volume at 08:31 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.

The nearest sounding before it

Grand Junction, CO (KGJT), launched 00:00Z, 8.5 hours before the alert went out and 178 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, Grand Junction, CO at 00:00Z on 2021-04-08Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 00:00Z on 2021-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939587897117Sfc1 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
3134 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

838 
WWUS85 KGJT 080828
RFWGJT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Grand Junction CO
228 AM MDT Thu Apr 8 2021

COZ207-082200-
/O.NEW.KGJT.FW.W.0005.210409T1800Z-210410T0300Z/
/O.CON.KGJT.FW.W.0004.210408T1800Z-210409T0300Z/
Southwest Colorado Lower Forecast Area-
228 AM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS
FOR FIRE WEATHER ZONE 207...
...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT FRIDAY FOR
GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE WEATHER
ZONE 207...

The National Weather Service in Grand Junction has issued a Red
Flag Warning for gusty winds, low relative humidity and dry
fuels, which is in effect from noon to 9 PM MDT Friday.

* AFFECTED AREA...In Colorado, Fire Weather Zone 207 Southwest 
  Colorado Lower Forecast Area.

* WINDS...Northwest 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...7 to 15 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ200-082200-
/O.EXA.KGJT.FW.W.0004.210408T1800Z-210409T0300Z/
Little Snake Forecast Area-
228 AM MDT Thu Apr 8 2021

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR
FIRE WEATHER ZONE 200...

The National Weather Service in Grand Junction has issued a Red
Flag Warning for gusty winds, low relative humidity and dry
fuels, which is in effect from noon today to 9 PM MDT this
evening.

* AFFECTED AREA...In Colorado, Fire Weather Zone 200 Little 
  Snake Forecast Area.

* WINDS...West 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...7 to 15 percent.

* IMPACTS...Conditions could become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ295-082200-
/O.EXA.KGJT.FW.W.0004.210408T1800Z-210409T0300Z/
Southwest Colorado Upper East Forecast Area-
228 AM MDT Thu Apr 8 2021

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR
FIRE WEATHER ZONE 295 BELOW 8000 FEET...

The National Weather Service in Grand Junction has issued a Red
Flag Warning below 8000 feet for gusty winds, low relative
humidity and dry fuels, which is in effect from noon today to
9 PM MDT this evening.

* AFFECTED AREA...In Colorado, Fire Weather Zone 295 Southwest 
  Colorado Upper East Forecast Area below 8000 feet.

* WINDS...West 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...10 to 15 percent.

* IMPACTS...Conditions could become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ290-UTZ487-490-082200-
/O.CON.KGJT.FW.W.0004.210408T1800Z-210409T0300Z/
Paradox Valley Forecast Area-Book Cliffs-Colorado River Basin-
228 AM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS
FOR FIRE WEATHER ZONES 290, 487, AND 490...

* AFFECTED AREA...In Colorado, Fire Weather Zone 290 Paradox 
  Valley Forecast Area. In Utah, Fire Weather Zone 487 Book 
  Cliffs and Fire Weather Zone 490 Colorado River Basin.

* WINDS...West 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...7 to 15 percent.

* IMPACTS...Conditions could become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

UTZ486-082200-
/O.CON.KGJT.FW.W.0004.210408T1800Z-210409T0300Z/
Eastern Uinta Basin-
228 AM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS
FOR FIRE WEATHER ZONE 486 BELOW 6000 FEET...

* AFFECTED AREA...In Utah, Fire Weather Zone 486 Eastern Uinta 
  Basin below 6000 feet.

* WINDS...West 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...7 to 15 percent.

* IMPACTS...Conditions could become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ202-203-292-082200-
/O.CON.KGJT.FW.W.0004.210408T1800Z-210409T0300Z/
White River Forecast Area-Lower Colorado River-
North Fork Forecast Area-
228 AM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS
FOR FIRE WEATHER ZONES 202, 203, AND 292 BELOW 8000 FEET...

* AFFECTED AREA...In Colorado, Fire Weather Zone 202 White River 
  Forecast Area, Fire Weather Zone 203 Lower Colorado River and 
  Fire Weather Zone 292 North Fork Forecast Area below 8000 feet.

* WINDS...West 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...7 to 15 percent.

* IMPACTS...Conditions could become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$
5 follow-up statements
766 
WWUS85 KGJT 082038
RFWGJT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Grand Junction CO
238 PM MDT Thu Apr 8 2021

COZ295-090300-
/O.EXA.KGJT.FW.W.0005.210409T1800Z-210410T0300Z/
/O.CON.KGJT.FW.W.0004.000000T0000Z-210409T0300Z/
Southwest Colorado Upper East Forecast Area-
238 PM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE
WEATHER ZONE 295 BELOW 8000 FEET...
...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT FRIDAY FOR
GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE WEATHER
ZONE 295 BELOW 8000 FEET...

The National Weather Service in Grand Junction has issued a Red
Flag Warning below 8000 feet for gusty winds, low relative
humidity and dry fuels, which is in effect from noon to 9 PM MDT
Friday.

* AFFECTED AREA...In Colorado, Fire Weather Zone 295 Southwest 
  Colorado Upper East Forecast Area below 8000 feet.

* WINDS...For the Red Flag Warning today...West 10 to 20 mph with
  gusts up to 35 mph. For Friday's Red Flag Warning...Northwest 10
  to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...10 to 15 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ207-090300-
/O.CON.KGJT.FW.W.0004.000000T0000Z-210409T0300Z/
/O.CON.KGJT.FW.W.0005.210409T1800Z-210410T0300Z/
Southwest Colorado Lower Forecast Area-
238 PM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE
WEATHER ZONE 207...
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT
FRIDAY FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR
FIRE WEATHER ZONE 207...

* AFFECTED AREA...In Colorado, Fire Weather Zone 207 Southwest 
  Colorado Lower Forecast Area.

* WINDS...Northwest 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...7 to 15 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ200-290-UTZ487-490-090300-
/O.CON.KGJT.FW.W.0004.000000T0000Z-210409T0300Z/
Little Snake Forecast Area-Paradox Valley Forecast Area-
Book Cliffs-Colorado River Basin-
238 PM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE
WEATHER ZONES 200, 290, 487, AND 490...

* AFFECTED AREA...In Colorado, Fire Weather Zone 200 Little 
  Snake Forecast Area and Fire Weather Zone 290 Paradox Valley 
  Forecast Area. In Utah, Fire Weather Zone 487 Book Cliffs and 
  Fire Weather Zone 490 Colorado River Basin.

* WINDS...West 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...9 to 14 percent.

* IMPACTS...Conditions could become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

UTZ486-090300-
/O.CON.KGJT.FW.W.0004.000000T0000Z-210409T0300Z/
Eastern Uinta Basin-
238 PM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE
WEATHER ZONE 486 BELOW 6000 FEET...

* AFFECTED AREA...In Utah, Fire Weather Zone 486 Eastern Uinta 
  Basin below 6000 feet.

* WINDS...West 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...10 to 15 percent.

* IMPACTS...Conditions could become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ202-203-292-090300-
/O.CON.KGJT.FW.W.0004.000000T0000Z-210409T0300Z/
White River Forecast Area-Lower Colorado River-
North Fork Forecast Area-
238 PM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE
WEATHER ZONES 202, 203, AND 292 BELOW 8000 FEET...

* AFFECTED AREA...In Colorado, Fire Weather Zone 202 White River 
  Forecast Area, Fire Weather Zone 203 Lower Colorado River and 
  Fire Weather Zone 292 North Fork Forecast Area below 8000 feet.

* WINDS...West 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...9 to 14 percent.

* IMPACTS...Conditions could become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$
262 
WWUS85 KGJT 090304
RFWGJT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Grand Junction CO
904 PM MDT Thu Apr 8 2021

COZ207-091200-
/O.EXP.KGJT.FW.W.0004.000000T0000Z-210409T0300Z/
/O.CON.KGJT.FW.W.0005.210409T1800Z-210410T0300Z/
Southwest Colorado Lower Forecast Area-
904 PM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT
FRIDAY FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR
FIRE WEATHER ZONE 207...

* AFFECTED AREA...In Colorado, Fire Weather Zone 207 Southwest 
  Colorado Lower Forecast Area.

* WINDS...Northwest 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...9 to 14 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ295-091200-
/O.EXP.KGJT.FW.W.0004.000000T0000Z-210409T0300Z/
/O.CON.KGJT.FW.W.0005.210409T1800Z-210410T0300Z/
Southwest Colorado Upper East Forecast Area-
904 PM MDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT
FRIDAY FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR
FIRE WEATHER ZONE 295 BELOW 8000 FEET...

* AFFECTED AREA...In Colorado, Fire Weather Zone 295 Southwest 
  Colorado Upper East Forecast Area below 8000 feet.

* WINDS...Northwest 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...11 to 16 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ200-202-203-290-292-UTZ486-487-490-090415-
/O.EXP.KGJT.FW.W.0004.000000T0000Z-210409T0300Z/
Little Snake Forecast Area-White River Forecast Area-
Lower Colorado River-Paradox Valley Forecast Area-
North Fork Forecast Area-Eastern Uinta Basin-Book Cliffs-
Colorado River Basin-
904 PM MDT Thu Apr 8 2021

...RED FLAG WARNING HAS EXPIRED FOR GUSTY WINDS, LOW RELATIVE
HUMIDITY AND DRY FUELS FOR FIRE WEATHER ZONES 200, 202, 203, 290,
292, 486, 487, AND 490...

Winds have decreased this eveving across the area and the Red Flag
Warning has been allowed to expire. 

$$
357 
WWUS85 KGJT 090748
RFWGJT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Grand Junction CO
148 AM MDT Fri Apr 9 2021

COZ207-092100-
/O.CON.KGJT.FW.W.0005.210409T1800Z-210410T0300Z/
Southwest Colorado Lower Forecast Area-
148 AM MDT Fri Apr 9 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS
FOR FIRE WEATHER ZONE 207...

* AFFECTED AREA...In Colorado, Fire Weather Zone 207 Southwest 
  Colorado Lower Forecast Area.

* WINDS...Northwest 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...9 to 14 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ295-092100-
/O.CON.KGJT.FW.W.0005.210409T1800Z-210410T0300Z/
Southwest Colorado Upper East Forecast Area-
148 AM MDT Fri Apr 9 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS
FOR FIRE WEATHER ZONE 295 BELOW 8000 FEET...

* AFFECTED AREA...In Colorado, Fire Weather Zone 295 Southwest 
  Colorado Upper East Forecast Area below 8000 feet.

* WINDS...West 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...10 to 15 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ200-202-092100-
/O.NEW.KGJT.FW.A.0005.210410T1800Z-210411T0300Z/
Little Snake Forecast Area-White River Forecast Area-
148 AM MDT Fri Apr 9 2021

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY
FUELS FOR FIRE WEATHER ZONES 200 AND 202...

The National Weather Service in Grand Junction has issued a Fire
Weather Watch for gusty winds, low relative humidity and dry
fuels, which is in effect from Saturday afternoon through
Saturday evening.

* AFFECTED AREA...In Colorado, Fire Weather Zone 200 Little 
  Snake Forecast Area and Fire Weather Zone 202 White River 
  Forecast Area.

* WINDS...West 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...9 to 14 percent.

* IMPACTS...Conditions could become favorable for rapid ignition 
  and spread of fires.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$
707 
WWUS85 KGJT 092008
RFWGJT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Grand Junction CO
208 PM MDT Fri Apr 9 2021

COZ200-202-100300-
/O.UPG.KGJT.FW.A.0005.210410T1800Z-210411T0300Z/
/O.NEW.KGJT.FW.W.0006.210410T1800Z-210411T0300Z/
Little Snake Forecast Area-White River Forecast Area-
208 PM MDT Fri Apr 9 2021

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT SATURDAY FOR
GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE WEATHER
ZONES 200 AND 202...

The National Weather Service in Grand Junction has issued a Red
Flag Warning for gusty winds, low relative humidity and dry
fuels, which is in effect from noon to 9 PM MDT Saturday. The
Fire Weather Watch is no longer in effect.

* AFFECTED AREA...In Colorado, Fire Weather Zone 200 Little 
  Snake Forecast Area and Fire Weather Zone 202 White River 
  Forecast Area.

* WINDS...West 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...10 to 15 percent.

* IMPACTS...Conditions will be favorable for rapid ignition and 
  spread of fires.

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.

&&

$$

COZ207-100300-
/O.CON.KGJT.FW.W.0005.000000T0000Z-210410T0300Z/
Southwest Colorado Lower Forecast Area-
208 PM MDT Fri Apr 9 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE
WEATHER ZONE 207...

* AFFECTED AREA...In Colorado, Fire Weather Zone 207 Southwest 
  Colorado Lower Forecast Area.

* WINDS...Northwest 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...8 to 13 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$

COZ295-100300-
/O.CON.KGJT.FW.W.0005.000000T0000Z-210410T0300Z/
Southwest Colorado Upper East Forecast Area-
208 PM MDT Fri Apr 9 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE
WEATHER ZONE 295 BELOW 8000 FEET...

* AFFECTED AREA...In Colorado, Fire Weather Zone 295 Southwest 
  Colorado Upper East Forecast Area below 8000 feet.

* WINDS...West 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...8 to 13 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

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.

&&

$$
886 
WWUS85 KGJT 100301
RFWGJT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Grand Junction CO
901 PM MDT Fri Apr 9 2021

COZ207-101415-
/O.EXP.KGJT.FW.W.0005.000000T0000Z-210410T0300Z/
/O.NEW.KGJT.FW.A.0006.210411T1800Z-210412T0200Z/
Southwest Colorado Lower Forecast Area-
901 PM MDT Fri Apr 9 2021

...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH
SUNDAY EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY
FUELS FOR FIRE WEATHER ZONE 207...

...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR
GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE WEATHER
ZONE 207...

The National Weather Service in Grand Junction has issued a Fire
Weather Watch for gusty winds, low relative humidity and dry
fuels, which is in effect from Sunday afternoon through Sunday
evening.

* AFFECTED AREA...In Colorado, Fire Weather Zone 207 Southwest 
  Colorado Lower Forecast Area.

* WINDS...Northwest 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...8 to 13 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

COZ295-101415-
/O.EXP.KGJT.FW.W.0005.000000T0000Z-210410T0300Z/
/O.NEW.KGJT.FW.A.0006.210411T1800Z-210412T0200Z/
Southwest Colorado Upper East Forecast Area-
901 PM MDT Fri Apr 9 2021

...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH
SUNDAY EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY
FUELS FOR FIRE WEATHER ZONE 295 BELOW 8000 FEET...

...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR
GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR FIRE WEATHER
ZONE 295 BELOW 8000 FEET...

The National Weather Service in Grand Junction has issued a Fire
Weather Watch below 8000 feet for gusty winds, low relative
humidity and dry fuels, which is in effect from Sunday afternoon
through Sunday evening.

* AFFECTED AREA...In Colorado, Fire Weather Zone 295 Southwest 
  Colorado Upper East Forecast Area below 8000 feet.

* WINDS...West 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...7 to 12 percent.

* IMPACTS...Conditions will become favorable for rapid ignition 
  and spread of fires.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

COZ200-202-101415-
/O.CON.KGJT.FW.W.0006.210410T1800Z-210411T0300Z/
Little Snake Forecast Area-White River Forecast Area-
901 PM MDT Fri Apr 9 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT
SATURDAY FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND DRY FUELS FOR
FIRE WEATHER ZONES 200 AND 202...

* AFFECTED AREA...In Colorado, Fire Weather Zone 200 Little 
  Snake Forecast Area and Fire Weather Zone 202 White River 
  Forecast Area.

* WINDS...West 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...10 to 15 percent.

* IMPACTS...Conditions will be favorable for rapid ignition and 
  spread of fires.

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.

&&

$$

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 Grand Junction, CO wrote its last area forecast discussion before this red flag warning went out at Apr 8, 2:23 AM MDT, 5 minutes earlier.

Area forecast discussion, Apr 8, 2:23 AM MDT, 5 minutes before
Area Forecast Discussion
National Weather Service Grand Junction CO
223 AM MDT Thu Apr 8 2021

.SHORT TERM...(Today through Friday)
Issued at 216 AM MDT Thu Apr 8 2021

A midlevel trough will be moving over the northern Rockies later
today, which will increase the winds aloft. Deep mixing within the
warmer than normal air mass will allow these winds to mix down to
the surface this afternoon and evening. Mixing will also drive the
relative humidity into the single digits and teens for the western
half of the forecast area. Dry and windy conditions will lead to
critical fire weather conditions. The Red Flag has been expanded to
include a few more zones. Highs will run around 10 degrees above
normal and some midlevel clouds are expected through out the day.
Late tonight that shortwave trough will clip northern Colorado and
bring snow showers to the northern mountains. Snow is expected after
midnight until about mid day and should remain fairly light. Totals
may be up to a few inches in the Park Range. Localized subfreezing
temperatures are possible in some of the lower valleys where
vegetation is susceptible. The chance for lingering clouds and
relatively low coverage of freezing temps are making it difficult to
justify a warning. Tomorrow the trough crosses the Divide and
cooler temperatures invade the forecast area. Highs will be 8-12
degrees cooler than today. The post-front flow in southwest
Colorado will support critical fire weather yet again in the lower
elevations during the afternoon. Elsewhere, clouds over the
northern and central mountains gradually dissipate.

.LONG TERM...(Friday night through Wednesday)
Issued at 216 AM MDT Thu Apr 8 2021

Dry northwest flow will clear skies Friday night and allow winds to
weaken to light, drainage flow. Light winds and clear skies will
favor another night of strong radiational cooling, which may dip a
few lower elevation areas back below freezing temperatures. Despite
another brisk morning, high temperatures will rebound back above
normal values as warm air lifts back into the region by Saturday
afternoon. The roller coaster weather continues as another Pacific
NW system whips across the Northern Rockies Saturday night. Moisture
and the cooler air mass will generally remain north of the area.
However, northeast Utah and northwest Colorado may experience a
slight dip in high temperatures on Sunday with a few showers across
the tips of the Elkhead and Park Ranges possible. Of main concern,
the northerly disturbance will tighten pressure gradients aloft
resulting in another blustery afternoon as we round out the weekend.

Monday will be a transition period, with little change in
temperatures as flow turns zonal aloft. Latest guidance reveals a
more interesting weather pattern across the Western CONUS overnight
into Tuesday. Another lobe of low pressure is expected to dive
southward into the Great Basin, pulling moisture northward.
Precipitation wrapping around the east and northeastern periphery of
the low has been placed directly over the Colorado Rockies. This
signature is consistent in the Euro, GFS, and Canadian 00Z runs,
increasing confidence in wet weather returning to the western slope
mid next week. Ensemble forecasts and deterministic models show
little progression with the low's position, which would maintain an
unsettled weather pattern across the inter-mountain west into the
weekend.

&&

.AVIATION...(For the 06Z TAFS through 06Z Thursday night)
Issued at 1237 AM MDT Thu Apr 8 2021

VFR conditions expected through the taf period with gusty winds
common across most sites this afternoon.

&&

.FIRE WEATHER...
Issued at 216 AM MDT Thu Apr 8 2021

Today a system approaching from the northwest will enhance winds
aloft allowing strong gusts to reach the surface in response to
deep boundary layer mixing. Not much has changed other than a few
more zones were added to the Red Flag Warning. A good portion of
western Colorado and northeast to east-central Utah will have
gusts in the 20 to 40 mph range with RH levels 7-15%.

A cold front crossing the region tonight will leave southwestern
Colorado under post-frontal flow which typically results in strong
wind gusts during the afternoon. Thus, fire weather concerns
persist across the Four Corners Friday afternoon and evening.

&&

.GJT WATCHES/WARNINGS/ADVISORIES...
CO...Red Flag Warning from noon today to 9 PM MDT this evening for
     COZ200-202-203-207-290-292-295.

     Red Flag Warning from noon to 9 PM MDT Friday for COZ207.

UT...Red Flag Warning from noon today to 9 PM MDT this evening for
     UTZ486-487-490.

&&

SHORT TERM...KJS
LONG TERM...ERW
AVIATION...TGJT
FIRE WEATHER...TGJT
Hazardous weather outlook, Apr 7, 3:30 AM MDT, 22 hours 58 minutes before
Hazardous Weather Outlook
National Weather Service Grand Junction CO
330 AM MDT Wed Apr 7 2021

COZ001>014-017>023-UTZ022>025-027>029-080930-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-
Upper Gunnison River Valley-Uncompahgre Plateau and Dallas Divide-
Northwest San Juan Mountains-Southwest San Juan Mountains-
Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
330 AM MDT Wed Apr 7 2021

This hazardous weather outlook is for eastern Utah and western
Colorado.

.DAY ONE...Today and Tonight

Gusty winds, along with low humidities and dry fuels, will create
critical fire weather conditions this afternoon so a Red Flag
Warning remain in effect across the Four Corners region. Snow
showers will linger over the northern and central mountains until
noon.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Fire weather concerns continue on Thursday across portions of
eastern Utah and western Colorado where a Fire Weather Watch
remains in effect. A cold front crossing the region Thursday
night returns the chance for snow across the northern mountains,
though accumulations remain light due to dry conditions in place.
Fire weather concerns return in post-frontal conditions across
Southwest Colorado on Friday. Otherwise, cool and dry conditions
set the stage for another potential freeze for some lower valleys
on Saturday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

The office that day

Everything else NWS Grand Junction, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 8, 3:22 PM MDTFreeze WatchGJTDelta, Gunnison, Mesa, Montrose10 hr

Nearby

Red Flag Warnings in Colorado, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.