Alert archive / Wyoming / Red Flag Warnings in 2016

Red Flag Warning 18, NWS Riverton, WY

August 7, 20165 counties in Wyoming

NWS Riverton, WY issued this red flag warning at Aug 7, 2016, 8:52 PM MDT for 5 counties in Wyoming. It took effect at Aug 8, 2016, 12:00 PM MDT. It was in force for 8 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
Aug 7, 2016, 8:52 PM MDT (02:52 UTC)
In effect from
Aug 8, 2016, 12:00 PM MDT
Expired
Aug 8, 2016, 8:00 PM MDT
In force
8 hr
Issued by
NWS Riverton, WY

Counties Fremont County, WY, Lincoln County, WY, Natrona County, WY, Sweetwater County, WY, Uinta County, WY

The radar

The Riverton/Lander radar (KRIW), 105 km from the middle of the area, began a volume at 02:54 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

Riverton, WY (KRIW), launched 00:00Z, 2.9 hours before the alert went out and 108 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, Riverton, WY at 00:00Z on 2016-08-08Temperature 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, Riverton, WY at 00:00Z on 2016-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 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
2779 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

077 
WWUS85 KRIW 080252
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
852 PM MDT SUN AUG 7 2016

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED ACROSS PORTIONS OF
SOUTHWESTERN AND CENTRAL WYOMING MONDAY...

.A VERY DRY AIRMASS COMBINED WITH GUSTY WEST TO SOUTHWEST WIND
WILL PUSH ACROSS PORTIONS OF OF SOUTHWESTERN AND CENTRAL WYOMING
MONDAY...BRINGING CRITICAL FIRE WEATHER CONDITIONS THROUGH THE
AFTERNOON AND EARLY EVENING ON MONDAY ACROSS ZONES 277 AND 289.

WYZ278-279-283-080400-
/O.CAN.KRIW.FW.A.0013.160808T1800Z-160809T0300Z/
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-
852 PM MDT SUN AUG 7 2016

...FIRE WEATHER WATCH IS CANCELLED FOR FIRE WEATHER ZONES
278...279 AND 283...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE FIRE
WEATHER WATCH. 

WHILE DRYING AND SOME INCREASE IN WINDS IS EXPECTED ACROSS THESE
ZONES MONDAY...IT NOW APPEARS THAT CONDITIONS WILL REMAIN BELOW
CRITICAL RED FLAG CONDITIONS FOR THE MOST PART. HOWEVER...FIRE
WEATHER CONDITIONS WILL STILL REMAIN ENHANCED AND CAUTION IS
WARRANTED BOTH MONDAY AFTERNOON AND EARLY EVENING.

$$

WYZ277-289-080900-
/O.UPG.KRIW.FW.A.0013.160808T1800Z-160809T0300Z/
/O.NEW.KRIW.FW.W.0018.160808T1800Z-160809T0200Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
852 PM MDT SUN AUG 7 2016

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY FOR
CRITICALLY DRY FUELS...LOW RELATIVE HUMIDITY...AND DUSTY SOUTHWEST
WINDS...FOR FIRE WEATHER ZONES 277 AND 289...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TO 8 PM MDT MONDAY. THE
FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

* AFFECTED AREA...FIRE WEATHER ZONE 277. FIRE WEATHER ZONE 278. 
  FIRE WEATHER ZONE 279. 

* WIND...WEST TO SOUTHWEST 15 TO 20 MPH GUSTING 25 TO 30 MPH.

* HUMIDITY...AS LOW AS 12 PERCENT.

* THUNDERSTORMS...AN ISOLATED DRY THUNDERSTORM MAY BE POSSIBLE
  ACROSS EASTERN ZONE 289.

* 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.

&&

$$
4 follow-up statements
870 
WWUS85 KRIW 080328
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
928 PM MDT SUN AUG 7 2016

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED ACROSS PORTIONS OF
SOUTHWESTERN AND CENTRAL WYOMING MONDAY...MOST OF THE WESTERN TWO
THIRDS OF WYOMING ON TUESDAY...

.A VERY DRY AIRMASS COMBINED WITH GUSTY SOUTHWEST WIND WILL PUSH
ACROSS PORTIONS OF OF SOUTHWESTERN AND CENTRAL WYOMING
MONDAY...THEN ALL OF WYOMING ON TUESDAY...BRINGING CRITICAL FIRE
WEATHER CONDITIONS THROUGH THE AFTERNOON AND EARLY EVENING FOR ZONES
277 AND 289 MONDAY...AND MOST OF THE WESTERN TWO THIRDS OF WYOMING
ON TUESDAY.

WYZ277-289-080900-
/O.NEW.KRIW.FW.A.0014.160809T1800Z-160810T0300Z/
/O.CON.KRIW.FW.W.0018.160808T1800Z-160809T0200Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
928 PM MDT SUN AUG 7 2016

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT
MONDAY FOR FIRE WEATHER ZONES 277 AND 289... 

...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING FOR FIRE WEATHER ZONES 277 AND 289...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE
WEATHER WATCH...WHICH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING. 

* AFFECTED AREA...FIRE WEATHER ZONES 277 AND 278. 

* WIND...WEST TO SOUTHWEST 15 TO 20 MPH GUSTING 25 TO 30 MPH
  MONDAY...SOUTHWEST 20 TO 25 GUSTING 30 TO 35 MPH TUESDAY.

* HUMIDITY...AS LOW AS 10 PERCENT.

* THUNDERSTORMS...AN ISOLATED DRY THUNDERSTORM MAY BE POSSIBLE 
  ACROSS EASTERN ZONE 289 MONDAY.

* 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.

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

&&

$$

WYZ140-275-276-278>283-285>288-300-414>416-080900-
/O.NEW.KRIW.FW.A.0014.160809T1800Z-160810T0300Z/
YELLOWSTONE NATIONAL PARK-NORTH BIG HORN BASIN/WORLAND BLM-
CODY FOOTHILLS-UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM-
SOUTH BIG HORN BASIN/WORLAND BLM-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-SOUTH BIGHORN MOUNTAINS-
ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-OWL CREEK MOUNTAINS-
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-CASPER MOUNTAIN-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
928 PM MDT SUN AUG 7 2016

...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING FOR CRITICALLY DRY FUELS...GUSTY WINDS AND LOW
RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 140...
275...276...278...279...280...281...282...283...285...286...287...
288...300...414...415 AND 416...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE
WEATHER WATCH...WHICH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING. 

* AFFECTED AREA...MOST OF THE WESTERN TWO THIRDS OF WYOMING.

* WIND...SOUTHWEST 15 TO 25 GUSTING 25 TO 35 MPH.

* HUMIDITY...AS LOW AS 10 PERCENT.

* THUNDERSTORMS...ISOLATED MORNING THUNDER MAINLY ACROSS NORTHWEST
  WYOMING. 

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

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.

&&

$$
170 
WWUS85 KRIW 080707
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
107 AM MDT MON AUG 8 2016

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED ACROSS PORTIONS OF
SOUTHWESTERN AND CENTRAL WYOMING TODAY...MOST OF THE WESTERN TWO
THIRDS OF WYOMING ON TUESDAY...

.A VERY DRY AIRMASS COMBINED WITH GUSTY SOUTHWEST WIND WILL PUSH
ACROSS PORTIONS OF OF SOUTHWESTERN AND CENTRAL WYOMING BEGINNING 
TODAY...THEN ALL OF WYOMING ON TUESDAY...BRINGING CRITICAL FIRE
WEATHER CONDITIONS THROUGH THE AFTERNOON AND EARLY EVENING FOR
ZONES 277 AND 289 MONDAY...AND MOST OF THE WESTERN TWO THIRDS OF
WYOMING ON TUESDAY.

WYZ277-289-082200-
/O.CON.KRIW.FW.W.0018.160808T1800Z-160809T0200Z/
/O.CON.KRIW.FW.A.0014.160809T1800Z-160810T0300Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
107 AM MDT MON AUG 8 2016

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT
THIS EVENING FOR FIRE WEATHER ZONES 277 AND 289...

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH TUESDAY EVENING FOR FIRE WEATHER ZONES 277 AND 289...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE
WEATHER WATCH...WHICH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING.

* AFFECTED AREA...FIRE WEATHER ZONES 277 AND 278.

* WIND...WEST TO SOUTHWEST 15 TO 20 MPH GUSTING 25 TO 30 MPH
  TODAY...SOUTHWEST 20 TO 25 GUSTING 30 TO 35 MPH TUESDAY.

* HUMIDITY...AS LOW AS 10 PERCENT.

* THUNDERSTORMS...AN ISOLATED DRY THUNDERSTORM MAY BE POSSIBLE
  ACROSS EASTERN ZONE 289 TODAY.

* 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.

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

&&

$$

WYZ140-275-276-278>283-285>288-300-414>416-082200-
/O.CON.KRIW.FW.A.0014.160809T1800Z-160810T0300Z/
YELLOWSTONE NATIONAL PARK-NORTH BIG HORN BASIN/WORLAND BLM-
CODY FOOTHILLS-UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM-
SOUTH BIG HORN BASIN/WORLAND BLM-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-SOUTH BIGHORN MOUNTAINS-
ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-OWL CREEK MOUNTAINS-
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-CASPER MOUNTAIN-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
107 AM MDT MON AUG 8 2016

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH TUESDAY EVENING FOR CRITICALLY DRY FUELS...GUSTY WINDS
AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 140... 275...
276...278...279...280...281...282...283...285...286...287...
288...300...414...415 AND 416...

* AFFECTED AREA...MOST OF THE WESTERN TWO THIRDS OF WYOMING.

* WIND...SOUTHWEST 15 TO 25 GUSTING 25 TO 35 MPH.

* HUMIDITY...AS LOW AS 10 PERCENT.

* THUNDERSTORMS...ISOLATED MORNING THUNDER MAINLY ACROSS
  NORTHWEST WYOMING. 

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

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.

&&

$$
198 
WWUS85 KRIW 081220 CCA
RFWRIW

URGENT - FIRE WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE RIVERTON WY
620 AM MDT MON AUG 8 2016

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED ACROSS PORTIONS OF
SOUTHWESTERN AND CENTRAL WYOMING TODAY...MOST OF THE WESTERN TWO
THIRDS OF WYOMING ON TUESDAY...

.A VERY DRY AIRMASS COMBINED WITH GUSTY SOUTHWEST WIND WILL PUSH
ACROSS PORTIONS OF OF SOUTHWESTERN AND CENTRAL WYOMING BEGINNING 
TODAY...THEN ALL OF WYOMING ON TUESDAY...BRINGING CRITICAL FIRE
WEATHER CONDITIONS THROUGH THE AFTERNOON AND EARLY EVENING FOR
ZONES 277 AND 289 MONDAY...AND MOST OF THE WESTERN TWO THIRDS OF
WYOMING ON TUESDAY.

WYZ277-289-090030-
/O.COR.KRIW.FW.W.0018.160808T1800Z-160809T0200Z/
/O.COR.KRIW.FW.A.0014.160809T1800Z-160810T0300Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
620 AM MDT MON AUG 8 2016

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT
THIS EVENING FOR FIRE WEATHER ZONES 277 AND 289...

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH TUESDAY EVENING FOR FIRE WEATHER ZONES 277 AND 289...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE
WEATHER WATCH...WHICH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING.

* AFFECTED AREA...FIRE WEATHER ZONES 277 AND 289.

* WIND...WEST TO SOUTHWEST 15 TO 20 MPH GUSTING 25 TO 30 MPH
  TODAY...SOUTHWEST 20 TO 25 GUSTING 30 TO 35 MPH TUESDAY.

* HUMIDITY...AS LOW AS 10 PERCENT.

* THUNDERSTORMS...AN ISOLATED DRY THUNDERSTORM MAY BE POSSIBLE
  ACROSS EASTERN ZONE 289 TODAY.

* 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.

&&

$$

WYZ140-275-276-278>283-285>288-300-414>416-090030-
/O.CON.KRIW.FW.A.0014.160809T1800Z-160810T0300Z/
YELLOWSTONE NATIONAL PARK-NORTH BIG HORN BASIN/WORLAND BLM-
CODY FOOTHILLS-UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM-
SOUTH BIG HORN BASIN/WORLAND BLM-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-SOUTH BIGHORN MOUNTAINS-
ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-OWL CREEK MOUNTAINS-
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-CASPER MOUNTAIN-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
620 AM MDT MON AUG 8 2016

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH TUESDAY EVENING FOR CRITICALLY DRY FUELS...GUSTY WINDS
AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 140... 275...
276...278...279...280...281...282...283...285...286...287...
288...300...414...415 AND 416...

* AFFECTED AREA...MOST OF THE WESTERN TWO THIRDS OF WYOMING.

* WIND...SOUTHWEST 15 TO 25 GUSTING 25 TO 35 MPH.

* HUMIDITY...AS LOW AS 10 PERCENT.

* THUNDERSTORMS...ISOLATED MORNING THUNDER MAINLY ACROSS
  NORTHWEST WYOMING. 

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

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.

&&

$$
468 
WWUS85 KRIW 081512
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
912 AM MDT MON AUG 8 2016

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED ACROSS PORTIONS OF
SOUTHWESTERN AND CENTRAL WYOMING TODAY...MOST OF THE WESTERN TWO
THIRDS OF WYOMING ON TUESDAY...

.A VERY DRY AIRMASS COMBINED WITH GUSTY SOUTHWEST WIND WILL PUSH
ACROSS PORTIONS OF OF SOUTHWESTERN AND CENTRAL WYOMING BEGINNING
TODAY...THEN ALL OF WYOMING ON TUESDAY...BRINGING CRITICAL FIRE
WEATHER CONDITIONS THROUGH THE AFTERNOON AND EARLY EVENING FOR
ZONES 277...279...280...289 AND 300 TODAY...AND MOST OF THE
WESTERN TWO THIRDS OF WYOMING ON TUESDAY.

WYZ280-300-090200-
/O.EXB.KRIW.FW.W.0018.160808T1900Z-160809T0200Z/
/O.CON.KRIW.FW.A.0014.160809T1800Z-160810T0300Z/
NATRONA COUNTY/CASPER BLM-CASPER MOUNTAIN-
912 AM MDT MON AUG 8 2016

...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM
MDT THIS EVENING FOR FIRE WEATHER ZONES 277 AND 289...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH TUESDAY EVENING FOR CRITICALLY DRY FUELS...GUSTY WINDS
AND LOW RELATIVE HUMIDITY...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM MDT
THIS EVENING. 

* AFFECTED AREA...NATRONA COUNTY.

* WIND...SOUTHWEST 15 TO 20 GUSTING 25 TO 35 MPH.

* HUMIDITY...8 TO 12 PERCENT.

* THUNDERSTORMS...ISOLATED DRY THUNDERSTORMS.

* HAINES INDEX...5 TO 6.

* 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.

&&

$$

WYZ279-090200-
/O.EXA.KRIW.FW.W.0018.160808T1800Z-160809T0200Z/
/O.CON.KRIW.FW.A.0014.160809T1800Z-160810T0300Z/
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
912 AM MDT MON AUG 8 2016

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR
FIRE WEATHER ZONES 279...

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH TUESDAY EVENING FOR CRITICALLY DRY FUELS...GUSTY WINDS AND
LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 279...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT UNTIL 8 PM MDT THIS EVENING. 

* AFFECTED AREA...MOST OF THE WESTERN TWO THIRDS OF WYOMING.

* WIND...SOUTHWEST 15 TO 20 GUSTING 25 TO 35 MPH.

* HUMIDITY...AS LOW AS 10 PERCENT.

* HAINES INDEX...5 TO 6.

* 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.

&&

$$

WYZ277-289-090200-
/O.CON.KRIW.FW.W.0018.160808T1800Z-160809T0200Z/
/O.CON.KRIW.FW.A.0014.160809T1800Z-160810T0300Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
912 AM MDT MON AUG 8 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR FIRE WEATHER ZONES 277 AND 289...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH TUESDAY EVENING FOR FIRE WEATHER ZONES 277 AND 289...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE
WEATHER WATCH...WHICH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING.

* AFFECTED AREA...FIRE WEATHER ZONES 277 AND 289.

* WIND...WEST TO SOUTHWEST 15 TO 20 MPH GUSTING 25 TO 30 MPH 
  TODAY...SOUTHWEST 20 TO 25 GUSTING 30 TO 35 MPH TUESDAY.

* HUMIDITY...AS LOW AS 10 PERCENT.

* HAINES INDEX...5 TO 6.

* THUNDERSTORMS...AN ISOLATED DRY THUNDERSTORM MAY BE POSSIBLE 
  ACROSS EASTERN ZONE 289 TODAY.

* 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.

&&

$$

WYZ140-275-276-278-281>283-285>288-414>416-090200-
/O.CON.KRIW.FW.A.0014.160809T1800Z-160810T0300Z/
YELLOWSTONE NATIONAL PARK-NORTH BIG HORN BASIN/WORLAND BLM-
CODY FOOTHILLS-UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
JOHNSON COUNTY/CASPER BLM-SOUTH BIG HORN BASIN/WORLAND BLM-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-SOUTH BIGHORN MOUNTAINS-
ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-OWL CREEK MOUNTAINS-
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
912 AM MDT MON AUG 8 2016

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH TUESDAY EVENING FOR CRITICALLY DRY FUELS...GUSTY WINDS
AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 140... 275...
276...278...279...280...281...282...283...285...286...287...
288...300...414...415 AND 416...

* AFFECTED AREA...MOST OF THE WESTERN TWO THIRDS OF WYOMING.

* WIND...SOUTHWEST 15 TO 25 GUSTING 25 TO 35 MPH.

* HUMIDITY...AS LOW AS 10 PERCENT.

* THUNDERSTORMS...ISOLATED MORNING THUNDER MAINLY ACROSS 
  NORTHWEST WYOMING.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

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.

&&

$$

TEAM RIVERTON

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 Riverton, WY wrote its last area forecast discussion before this red flag warning went out at Aug 7, 1:54 PM MDT, 6 hours 58 minutes earlier.

Area forecast discussion, Aug 7, 1:54 PM MDT, 6 hours 58 minutes before
Area Forecast Discussion
National Weather Service Riverton WY
154 PM MDT SUN AUG 7 2016

.Short Term...Tonight Through Monday

A strong pacific low pressure trough will bring widespread showers
and thunderstorms across the west with scattered showers and
thunderstorms east of the Continental Divide through tonight.
Local heavy rain...large hail and strong wind gusts are expected.
Areas of fog will develop in the valleys along rivers and lakes...
especially in the west...late tonight and Monday morning. Clouds
will decrease through the morning. Isolated showers and
thunderstorms are expected mainly over the mountains Monday
afternoon and early evening. Windy conditions with sharply lower
relative humidity is expected monday afternoon and evening with
potential critical fire weather conditions in fire weather zones
277 278 279 283 and 289.

.Long Term...Monday night Through Sunday

Monday night will see clearing as dry air moves in across the
west...south and central areas. Tuesday will be dry...windy and
warmer continuing through Wednesday.  showers and thunderstorms
will move up from the south late Wednesday afternoon and evening
continuing through Thursday and Thursday evening. A high pressure
ridge will build up from the great basin into the northern Rockies
Friday through Sunday with dry and warmer conditions expected.

&&

.Aviation.../00Z Issuance/

Scattered showers and thunderstorms will prevail over the west
through this evening...more numerous in the mountains. East of the
divide...storms will be more widely scattered except near the
foothill locations. Some storms will be quite strong with
hail..heavy rain...frequent lightning and brief heavy
rain...especially along and west of the divide through this
evening. A few showers or isolated thunderstorms will linger
during the overnight hours.Monday will be drier with just isolated
showers and thunderstorms.

&&

.Fire Weather...

...a fire weather watch is in effect from monday afternoon through
Monday evening for zones 277 278 279 283 and 289...

A strong pacific low pressure trough will bring widespread showers
and thunderstorms across the west with scattered showers and
thunderstorms east of the Continental Divide through tonight.
Local heavy rain...large hail and strong wind gusts are expected.
Areas of fog will develop in the valleys late tonight and Monday
morning. Clouds will decrease through the morning. Isolated
showers and thunderstorms are expected mainly over the mountains
Monday afternoon and early evening. Windy conditions with sharply
lower relative humidity is expected monday afternoon and evening
with potential critical fire weather conditions in zones 277 278
279 283 and 289. Dry and windy conditions are expected Tuesday
with warmer temperatures.

&&

.RIW Watches/Warnings/Advisories...
Fire Weather Watch from Monday afternoon through Monday evening
for WYZ277>279-283-289.

&&

SHORT TERM...C.Baker
LONG TERM...C.Baker
AVIATION...Skrbac
FIRE WEATHER...C.Baker
Hazardous weather outlook, Aug 7, 2:48 AM MDT, 18 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
248 AM MDT SUN AUG 7 2016

WYZ001>020-022>030-081100-
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-CODY FOOTHILLS-
NORTH BIG HORN BASIN-SOUTHWEST BIG HORN BASIN-
SOUTHEAST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS-
BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST-
NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY-
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE-
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-STAR VALLEY-
SALT RIVER AND WYOMING RANGES-UPPER GREEN RIVER BASIN FOOTHILLS-
UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY-
ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY-
248 AM MDT SUN AUG 7 2016

...FIRE WEATHER WATCH FOR PORTIONS OF SOUTHERN AND CENTRAL WYOMING MONDAY
AFTERNOON AND EARLY EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

ISOLATED TO SCATTERED AFTERNOON AND EVENING THUNDERSTORMS. SOME
STORMS MAY PRODUCE GUSTY WINDS IN EXCESS OF 45 MPH.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

MONDAY THROUGH WEDNESDAY...VERY DRY...WARM AND BREEZY CONDITIONS
ACROSS SOUTH AND CENTRAL WYOMING WILL RESULT IN ELEVATED TO
CRITICAL FIRE WEATHER CONDITIONS. ISOLATED THUNDERSTORMS MONDAY
AND WEDNESDAY WITH SOME STRONG WIND GUSTS POSSIBLE.

THURSDAY...ISOLATED TO SCATTERED THUNDERSTORMS. SOME STRONG
THUNDERSTORMS POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ARE URGED TO REPORT HAIL AND WIND GUSTS OVER 45 MPH. THANK
YOU.

In the hours before

Special weather statement, Aug 7, 5:44 PM MDT, 3 hours 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
544 PM MDT SUN AUG 7 2016

WYZ012-013-023-080015-
TETON AND GROS VENTRE MOUNTAINS-STAR VALLEY-JACKSON HOLE-
544 PM MDT SUN AUG 7 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN TETON AND
NORTHWESTERN LINCOLN COUNTIES UNTIL 615 PM MDT...

AT 543 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8
MILES NORTHEAST OF PALISADES RESERVOIR...MOVING EAST AT 30 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  JACKSON...HOBACK AND RAFTER J RANCH AROUND 610 PM MDT.

LAT...LON 4345 11104 4351 11098 4356 11076 4324 11059
      4324 11076 4322 11076 4321 11105
TIME...MOT...LOC 2343Z 254DEG 25KT 4332 11100

13
Special weather statement, Aug 7, 6:08 PM MDT, 2 hours 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
608 PM MDT SUN AUG 7 2016

WYZ012>016-023>025-080130-
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE-
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
UPPER WIND RIVER BASIN-STAR VALLEY-SALT RIVER AND WYOMING RANGES-
UPPER GREEN RIVER BASIN FOOTHILLS-
INCLUDING THE CITIES OF...JACKSON...DUBOIS...AFTON...ALPINE...
STAR VALLEY RANCH...THAYNE...PINEDALE
608 PM MDT SUN AUG 7 2016

SCATTERED THUNDERSTORMS WILL OCCUR OVER THE AREA UNTIL 730 PM. A
FEW STORMS MAY BE STRONG WITH SMALL HAIL...WIND GUSTS TO 35 MPH...
BRIEF HEAVY RAIN...AND FREQUENT LIGHTNING. BE PREPARED FOR STORMS
AND SEEK SAFE SHELTER INDOORS WHEN STORMS APPROACH YOUR LOCATION.

AR
Special weather statement, Aug 7, 6:18 PM MDT, 2 hours 34 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
618 PM MDT SUN AUG 7 2016

WYZ009>011-016>020-022-080200-
BIGHORN MOUNTAINS SOUTHEAST-NORTHEAST JOHNSON COUNTY-
SOUTHEAST JOHNSON COUNTY-UPPER WIND RIVER BASIN-WIND RIVER BASIN-
LANDER FOOTHILLS-GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-
INCLUDING THE CITIES OF...BUFFALO...KAYCEE...DUBOIS...RIVERTON...
SHOSHONI...LANDER...JEFFREY CITY...CASPER
618 PM MDT SUN AUG 7 2016

ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE THIS
EVENING ACROSS PORTIONS OF CENTRAL AND NORTHERN
WYOMING...INCLUDING FREMONT...NATRONA...AND JOHNSON COUNTIES.
THESE SHOWERS AND STORMS ARE MOVING NORTHEAST AT 40 MPH AND WILL
BE ABLE TO PRODUCE WIND GUSTS OF 45 TO 55 MPH AT TIMES UNDER
STRONGER CORES...IN ADDITION TO SMALL HAIL AND BRIEF HEAVY RAIN.
SOME WIND GUSTS MAY OCCUR WELL AWAY FROM THE STORMS THEMSELVES.
THESE SHOWERS AND STORMS SHOULD DECREASE IN COVERAGE AND INTENSITY
AFTER 8 PM.
Special weather statement, Aug 7, 6:43 PM MDT, 2 hours 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
643 PM MDT SUN AUG 7 2016

WYZ009>011-016>020-022-080200-
BIGHORN MOUNTAINS SOUTHEAST-NORTHEAST JOHNSON COUNTY-
SOUTHEAST JOHNSON COUNTY-UPPER WIND RIVER BASIN-WIND RIVER BASIN-
LANDER FOOTHILLS-GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-
INCLUDING THE CITIES OF...BUFFALO...KAYCEE...DUBOIS...RIVERTON...
SHOSHONI...LANDER...JEFFREY CITY...CASPER
643 PM MDT SUN AUG 7 2016

ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE THIS
EVENING ACROSS PORTIONS OF CENTRAL AND NORTHERN
WYOMING...INCLUDING FREMONT...NATRONA...AND JOHNSON COUNTIES.
THESE SHOWERS AND STORMS ARE MOVING NORTHEAST AT 40 MPH AND WILL
BE ABLE TO PRODUCE WIND GUSTS OF 45 TO 55 MPH...WITH LOCALIZED
GUSTS GREATER THAN 60 MPH AT TIMES...UNDER STRONGER CORES...IN
ADDITION TO SMALL HAIL AND BRIEF HEAVY RAIN. SOME WIND GUSTS MAY
OCCUR WELL AWAY FROM THE STORMS THEMSELVES. THESE SHOWERS AND
STORMS SHOULD DECREASE IN COVERAGE AND INTENSITY AFTER 8 PM.
Special weather statement, Aug 7, 7:18 PM MDT, 1 hour 34 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
718 PM MDT SUN AUG 7 2016

WYZ014>016-023>025-080330-
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
UPPER WIND RIVER BASIN-STAR VALLEY-SALT RIVER AND WYOMING RANGES-
UPPER GREEN RIVER BASIN FOOTHILLS-
INCLUDING THE CITIES OF...DUBOIS...AFTON...ALPINE...
STAR VALLEY RANCH...THAYNE...PINEDALE
718 PM MDT SUN AUG 7 2016

SCATTERED THUNDERSTORMS WILL OCCUR THROUGH 930 PM ACROSS THESE
LOCATIONS. A FEW STORMS MAY BE STRONG WITH SMALL HAIL...WIND GUSTS
TO 40 MPH... BRIEF HEAVY RAIN...AND FREQUENT LIGHTNING. BE
PREPARED FOR STORMS AND SEEK SAFE SHELTER INDOORS WHEN STORMS
APPROACH YOUR LOCATION.

WYZ028>030-080330-
ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY-
INCLUDING THE CITIES OF...ROCK SPRINGS...GREEN RIVER...WAMSUTTER
718 PM MDT SUN AUG 7 2016

SCATTERED THUNDERSTORMS WILL OCCUR OVER THE AREA UNTIL 1000 PM. A
FEW STORMS MAY BE STRONG WITH SMALL HAIL...WIND GUSTS TO 45 MPH...
BRIEF HEAVY RAIN...AND FREQUENT LIGHTNING. BE PREPARED FOR STORMS
AND SEEK SAFE SHELTER INDOORS WHEN STORMS APPROACH YOUR LOCATION.

AR
Special weather statement, Aug 7, 7:48 PM MDT, 1 hour 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
748 PM MDT SUN AUG 7 2016

WYZ016>020-022-080300-
UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-
INCLUDING THE CITIES OF...DUBOIS...RIVERTON...SHOSHONI...LANDER...
JEFFREY CITY...CASPER
748 PM MDT SUN AUG 7 2016

WIDELY SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE THIS EVENING
ACROSS PORTIONS OF CENTRAL WYOMING...INCLUDING
FREMONT AND NATRONA COUNTIES. THESE SHOWERS AND STORMS ARE MOVING
NORTHEAST AT 40 MPH AND WILL BE ABLE TO PRODUCE WIND GUSTS OF 45
TO 55 MPH AT TIMES...IN ADDITION TO BRIEF HEAVY RAIN. SOME WIND
GUSTS MAY OCCUR WELL AWAY FROM THE STORMS THEMSELVES. THESE
SHOWERS AND STORMS SHOULD DECREASE IN COVERAGE AND INTENSITY AFTER
9 PM.

The office that day

Everything else NWS Riverton, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 9:28 PM MDTFire Weather WatchRIWBig Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 6 more24 hr
Aug 7, 11:58 PM MDTSpecial Weather StatementRIWNatrona32 min
Aug 8, 1:53 PM MDTSpecial Weather StatementRIWHot Springs37 min
Aug 8, 1:59 PM MDTSpecial Weather StatementRIWNatrona31 min
Aug 8, 2:04 PM MDTSpecial Weather StatementRIW41 min
Aug 8, 2:10 PM MDTSevere Thunderstorm WarningRIWHot Springs, Washakie50 min
Aug 8, 3:05 PM MDTSpecial Weather StatementRIWWashakie25 min
Aug 8, 3:35 PM MDTSpecial Weather StatementRIWWashakie25 min

Nearby

Red Flag Warnings in Wyoming, 2016Every red flag warning in 2016

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.