Alert archive / Washington / Heat Advisories in 2021

Heat Advisory 4, NWS Spokane, WA

July 11, 202113 counties in Washington; 4 counties in Idaho

NWS Spokane, WA issued this heat advisory at Jul 11, 2021, 2:03 PM PDT for 13 counties in Washington; 4 counties in Idaho. It took effect at Jul 12, 2021, 12:00 PM PDT. It was in force for 56 hr.

The area

The counties it named.

The facts

Issued
Jul 11, 2021, 2:03 PM PDT (21:03 UTC)
In effect from
Jul 12, 2021, 12:00 PM PDT
Expired
Jul 14, 2021, 8:00 PM PDT
In force
56 hr
Issued by
NWS Spokane, WA

Counties Benewah County, ID, Kootenai County, ID, Latah County, ID, Nez Perce County, ID, Adams County, WA, Asotin County, WA, Chelan County, WA, Douglas County, WA, Ferry County, WA, Garfield County, WA, Grant County, WA, Lincoln County, WA, Okanogan County, WA, Pend Oreille County, WA, Spokane County, WA, Stevens County, WA, Whitman County, WA

The radar

The Spokane radar (KOTX), 41 km from the middle of the area, began a volume at 21:04 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

Spokane, WA (KOTX), launched 12:00Z, 9.1 hours before the alert went out and 126 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, Spokane, WA at 12:00Z on 2021-07-11Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2021-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 square meters per square second.19395878Sfc1 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
3178 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
29 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

624 
WWUS76 KOTX 112103
NPWOTX

URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
203 PM PDT Sun Jul 11 2021

IDZ002-003-026-WAZ032>038-041-043-044-121200-
/O.NEW.KOTX.HT.Y.0004.210712T1900Z-210715T0300Z/
Coeur d'Alene Area-Idaho Palouse-Lewiston Area-Lower Garfield and
Asotin Counties-Washington Palouse-Moses Lake Area-Upper Columbia
Basin-Spokane Area-Northeast Mountains-Okanogan Highlands-
Wenatchee Area-Okanogan Valley-Waterville Plateau-
Including the cities of Colfax, Quincy, Pomeroy, Worley,
Waterville, Cheney, Hayden, Nespelem, Ephrata, Republic, Odessa,
Moscow, Brewster, Othello, Tekoa, Uniontown, Mansfield, Peck,
Oakesdale, Kettle Falls, Rockford, Rosalia, Coulee City, Spokane,
Wilbur, Wauconda, Grand Coulee, Bridgeport, Coeur d'Alene,
Cashmere, Omak, La Crosse, Okanogan, Lapwai, Newport, Wenatchee,
Chelan, Culdesac, Lewiston, Davenport, Entiat, Potlatch,
Clarkston, Plummer, Post Falls, Gifford, Genesee, Chewelah, Moses
Lake, Oroville, Deer Park, Pullman, Colville, Ritzville, and
Inchelium
203 PM PDT Sun Jul 11 2021

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM PDT WEDNESDAY...

* WHAT...Hot temperatures with highs in the mid 90s to lower 100s. 

* WHERE...Portions of North and North Central Idaho. Portions of 
  Central, East Central, North Central, Northeast, and Southeast 
  Washington.

* WHEN...From Noon Monday to 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and 
Health Administration recommends scheduling frequent rest breaks in 
shaded or air conditioned environments. Anyone overcome by heat 
should be moved to a cool and shaded location. Heat stroke is an 
emergency! Call 9 1 1.

&&

$$

TW
6 follow-up statements
971 
WWUS76 KOTX 121150
NPWOTX

URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
450 AM PDT Mon Jul 12 2021

IDZ002-003-026-WAZ032>038-041-043-044-122000-
/O.CON.KOTX.HT.Y.0004.210712T1900Z-210715T0300Z/
Coeur d'Alene Area-Idaho Palouse-Lewiston Area-Lower Garfield and
Asotin Counties-Washington Palouse-Moses Lake Area-Upper Columbia
Basin-Spokane Area-Northeast Mountains-Okanogan Highlands-
Wenatchee Area-Okanogan Valley-Waterville Plateau-
Including the cities of Colfax, Quincy, Pomeroy, Worley,
Waterville, Cheney, Hayden, Nespelem, Ephrata, Republic, Odessa,
Moscow, Brewster, Othello, Tekoa, Uniontown, Mansfield, Peck,
Oakesdale, Kettle Falls, Rockford, Rosalia, Coulee City, Spokane,
Wilbur, Wauconda, Grand Coulee, Bridgeport, Coeur d'Alene,
Cashmere, Omak, La Crosse, Okanogan, Lapwai, Newport, Wenatchee,
Chelan, Culdesac, Lewiston, Davenport, Entiat, Potlatch,
Clarkston, Plummer, Post Falls, Gifford, Genesee, Chewelah, Moses
Lake, Oroville, Deer Park, Pullman, Colville, Ritzville, and
Inchelium
450 AM PDT Mon Jul 12 2021

...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM PDT 
WEDNESDAY...

* WHAT...Hot temperatures with highs in the mid 90s to lower 100s.

* WHERE...Portions of North and North Central Idaho. Portions of 
  Central, East Central, North Central, Northeast, and Southeast 
  Washington.

* WHEN...From Noon today to 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and 
Health Administration recommends scheduling frequent rest breaks in 
shaded or air conditioned environments. Anyone overcome by heat 
should be moved to a cool and shaded location. Heat stroke is an 
emergency! Call 9 1 1.

&&

$$

TC
732 
WWUS76 KOTX 122018
NPWOTX

URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
118 PM PDT Mon Jul 12 2021

IDZ002-003-026-WAZ032>038-041-043-044-131400-
/O.CON.KOTX.HT.Y.0004.000000T0000Z-210715T0300Z/
Coeur d'Alene Area-Idaho Palouse-Lewiston Area-Lower Garfield and
Asotin Counties-Washington Palouse-Moses Lake Area-Upper Columbia
Basin-Spokane Area-Northeast Mountains-Okanogan Highlands-
Wenatchee Area-Okanogan Valley-Waterville Plateau-
Including the cities of Colfax, Quincy, Pomeroy, Worley,
Waterville, Cheney, Hayden, Nespelem, Ephrata, Republic, Odessa,
Moscow, Brewster, Othello, Tekoa, Uniontown, Mansfield, Peck,
Oakesdale, Kettle Falls, Rockford, Rosalia, Coulee City, Spokane,
Wilbur, Wauconda, Grand Coulee, Bridgeport, Coeur d'Alene,
Cashmere, Omak, La Crosse, Okanogan, Lapwai, Newport, Wenatchee,
Chelan, Culdesac, Lewiston, Davenport, Entiat, Potlatch,
Clarkston, Plummer, Post Falls, Gifford, Genesee, Chewelah, Moses
Lake, Oroville, Deer Park, Pullman, Colville, Ritzville, and
Inchelium
118 PM PDT Mon Jul 12 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...Hot temperatures with highs in the mid 90s to lower 100s.

* WHERE...Portions of North and North Central Idaho. Portions of 
  Central, East Central, North Central, Northeast, and Southeast 
  Washington.

* WHEN...Until 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and 
Health Administration recommends scheduling frequent rest breaks in 
shaded or air conditioned environments. Anyone overcome by heat 
should be moved to a cool and shaded location. Heat stroke is an 
emergency! Call 9 1 1.

&&

$$

SVH
446 
WWUS76 KOTX 131325
NPWOTX

URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
625 AM PDT Tue Jul 13 2021

IDZ002-003-026-WAZ032>038-041-043-044-132300-
/O.CON.KOTX.HT.Y.0004.000000T0000Z-210715T0300Z/
Coeur d'Alene Area-Idaho Palouse-Lewiston Area-Lower Garfield and
Asotin Counties-Washington Palouse-Moses Lake Area-Upper Columbia
Basin-Spokane Area-Northeast Mountains-Okanogan Highlands-
Wenatchee Area-Okanogan Valley-Waterville Plateau-
Including the cities of Colfax, Quincy, Pomeroy, Worley,
Waterville, Cheney, Hayden, Nespelem, Ephrata, Republic, Odessa,
Moscow, Brewster, Othello, Tekoa, Uniontown, Mansfield, Peck,
Oakesdale, Kettle Falls, Rockford, Rosalia, Coulee City, Spokane,
Wilbur, Wauconda, Grand Coulee, Bridgeport, Coeur d'Alene,
Cashmere, Omak, La Crosse, Okanogan, Lapwai, Newport, Wenatchee,
Chelan, Culdesac, Lewiston, Davenport, Entiat, Potlatch,
Clarkston, Plummer, Post Falls, Gifford, Genesee, Chewelah, Moses
Lake, Oroville, Deer Park, Pullman, Colville, Ritzville, and
Inchelium
625 AM PDT Tue Jul 13 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...Hot temperatures with highs in the mid 90s to near 105.

* WHERE...Portions of North and North Central Idaho. Portions of 
  Central, East Central, North Central, Northeast, and Southeast 
  Washington.

* WHEN...Until 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses. 

* ADDITIONAL DETAILS...We are going into the hottest days of this 
  advisory this Tuesday and Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and 
Health Administration recommends scheduling frequent rest breaks in 
shaded or air conditioned environments. Anyone overcome by heat 
should be moved to a cool and shaded location. Heat stroke is an 
emergency! Call 9 1 1.

&&

$$

TC
824 
WWUS76 KOTX 132217
NPWOTX

URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
317 PM PDT Tue Jul 13 2021

IDZ002-003-026-WAZ032>038-041-043-044-141415-
/O.CON.KOTX.HT.Y.0004.000000T0000Z-210715T0300Z/
Coeur d'Alene Area-Idaho Palouse-Lewiston Area-
Lower Garfield and Asotin Counties-Washington Palouse-
Moses Lake Area-Upper Columbia Basin-Spokane Area-
Northeast Mountains-Okanogan Highlands-Wenatchee Area-
Okanogan Valley-Waterville Plateau-
Including the cities of Coeur d'Alene, Post Falls, Hayden, 
Worley, Moscow, Plummer, Potlatch, Genesee, Lewiston, Lapwai, 
Peck, Culdesac, Gifford, Clarkston, Pomeroy, Pullman, Colfax, 
Rosalia, La Crosse, Oakesdale, Tekoa, Uniontown, Moses Lake, 
Ephrata, Othello, Quincy, Ritzville, Grand Coulee, Odessa, 
Wilbur, Coulee City, Spokane, Cheney, Davenport, Rockford, 
Colville, Deer Park, Chewelah, Newport, Kettle Falls, Republic, 
Inchelium, Wauconda, Wenatchee, Chelan, Entiat, Cashmere, Omak, 
Okanogan, Brewster, Bridgeport, Oroville, Nespelem, Waterville, 
and Mansfield
317 PM PDT Tue Jul 13 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...Hot temperatures with highs in the mid 90s to near 105.

* WHERE...Portions central and eastern Washington as well portions
  of the central Idaho Panhandle

* WHEN...Until 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early
morning or evening. Take action when you see symptoms of heat
exhaustion and heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency! Call 9 1 1.

&&

$$
372 
WWUS76 KOTX 141308
NPWOTX

URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
608 AM PDT Wed Jul 14 2021

IDZ002-003-026-WAZ032>038-041-043-044-150300-
/O.CON.KOTX.HT.Y.0004.000000T0000Z-210715T0300Z/
Coeur d'Alene Area-Idaho Palouse-Lewiston Area-Lower Garfield and
Asotin Counties-Washington Palouse-Moses Lake Area-Upper Columbia
Basin-Spokane Area-Northeast Mountains-Okanogan Highlands-
Wenatchee Area-Okanogan Valley-Waterville Plateau-
Including the cities of Colfax, Quincy, Pomeroy, Worley,
Waterville, Cheney, Hayden, Nespelem, Ephrata, Republic, Odessa,
Moscow, Brewster, Othello, Tekoa, Uniontown, Mansfield, Peck,
Oakesdale, Kettle Falls, Rockford, Rosalia, Coulee City, Spokane,
Wilbur, Wauconda, Grand Coulee, Bridgeport, Coeur d'Alene,
Cashmere, Omak, La Crosse, Okanogan, Lapwai, Newport, Wenatchee,
Chelan, Culdesac, Lewiston, Davenport, Entiat, Potlatch,
Clarkston, Plummer, Post Falls, Gifford, Genesee, Chewelah, Moses
Lake, Oroville, Deer Park, Pullman, Colville, Ritzville, and
Inchelium
608 AM PDT Wed Jul 14 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

* WHAT...Hot temperatures with highs in the mid 90s to near 105.

* WHERE...Portions of North and North Central Idaho. Portions of 
  Central, East Central, North Central, Northeast, and Southeast 
  Washington.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and 
Health Administration recommends scheduling frequent rest breaks in 
shaded or air conditioned environments. Anyone overcome by heat 
should be moved to a cool and shaded location. Heat stroke is an 
emergency! Call 9 1 1.

&&

$$

OTX
300 
WWUS76 KOTX 150254
NPWOTX

URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
754 PM PDT Wed Jul 14 2021

IDZ002-003-026-WAZ032>038-041-043-044-150400-
/O.EXP.KOTX.HT.Y.0004.000000T0000Z-210715T0300Z/
Coeur d'Alene Area-Idaho Palouse-Lewiston Area-
Lower Garfield and Asotin Counties-Washington Palouse-
Moses Lake Area-Upper Columbia Basin-Spokane Area-
Northeast Mountains-Okanogan Highlands-Wenatchee Area-
Okanogan Valley-Waterville Plateau-
Including the cities of Coeur d'Alene, Post Falls, Hayden, 
Worley, Moscow, Plummer, Potlatch, Genesee, Lewiston, Lapwai, 
Peck, Culdesac, Gifford, Clarkston, Pomeroy, Pullman, Colfax, 
Rosalia, La Crosse, Oakesdale, Tekoa, Uniontown, Moses Lake, 
Ephrata, Othello, Quincy, Ritzville, Grand Coulee, Odessa, 
Wilbur, Coulee City, Spokane, Cheney, Davenport, Rockford, 
Colville, Deer Park, Chewelah, Newport, Kettle Falls, Republic, 
Inchelium, Wauconda, Wenatchee, Chelan, Entiat, Cashmere, Omak, 
Okanogan, Brewster, Bridgeport, Oroville, Nespelem, Waterville, 
and Mansfield
754 PM PDT Wed Jul 14 2021

...HEAT ADVISORY WILL EXPIRE AT 8 PM PDT THIS EVENING...

Temperatures are expected to be cooler over the next several days.
Therefore the heat advisory has been allowed to expire.
Temperatures however will remain above average for this time of 
the year. 

$$
LN

Nearby

Heat Advisories in Washington, 2021Heat Advisories in Idaho, 2021Every heat advisory 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.