Alert archive / Wyoming / Red Flag Warnings in 2010
Red Flag Warning 13, NWS Riverton, WY
NWS Riverton, WY issued this red flag warning at Sep 18, 2010, 3:16 AM MDT for Lincoln County, Uinta County, Wyoming. It took effect at Sep 18, 2010, 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
- Sep 18, 2010, 3:16 AM MDT (09:16 UTC)
- In effect from
- Sep 18, 2010, 12:00 PM MDT
- Expired
- Sep 18, 2010, 8:01 PM MDT
- In force
- 8 hr
- Issued by
- NWS Riverton, WY
Counties Lincoln County, WY, Uinta County, WY
The radar
The Salt Lake City radar (KMTX), 164 km from the middle of the area, began a volume at 09:19 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
Salt Lake City I, UT (KSLC), launched 00:00Z, 9.3 hours before the alert went out and 155 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
- 6062 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
635 WWUS85 KRIW 180916 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 316 AM MDT SAT SEP 18 2010 ...DANGEROUS FIRE WEATHER CONDITIONS ARE EXPECTED FOR UINTA AND SOUTHERN LINCOLN COUNTY FOR THIS AFTERNOON*OVERVIEW HEADLINE... .SIGNIFICANT WINDS COMBINED WITH LOW RELATIVE HUMIDITY WILL COMBINE WITH DRY VEGETATION WHICH WILL RESULT IN DANGEROUS FIRE WEATHER CONDITIONS FOR UINTA AND SOUTHERN LINCOLN COUNTIES WHICH INCLUDES FIRE WEATHER ZONE 277 FOR THIS AFTERNOON. WYZ277-182130- /O.NEW.KRIW.FW.W.0013.100918T1800Z-100919T0200Z/ LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS- 316 AM MDT SAT SEP 18 2010 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 277... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. * SUMMARY...THE COMBINATION OF SIGNIFICANT WINDS AND LOW RELATIVE HUMIDITY WILL COMBINE WITH VERY DRY VEGETATION TO PRODUCE DANGEROUS FIRE WEATHER CONDITIONS FOR THIS AFTERNOON. * AFFECTED AREA...FIRE WEATHER ZONE 277. * WIND...WEST SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 30 MPH. * HUMIDITY...10 PERCENT. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ LIPSON HTTP://WEATHER.GOV/RIVERTON
2 follow-up statements
332 WWUS85 KRIW 182033 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 233 PM MDT SAT SEP 18 2010 ...DANGEROUS FIRE WEATHER CONDITIONS ARE EXPECTED FOR UINTA AND SOUTHERN LINCOLN COUNTY FOR THIS AFTERNOON WILL SPREAD ACROSS MUCH OF WESTERN AND CENTRAL WYOMING SUNDAY AFTERNOON... .SIGNIFICANT WINDS COMBINED WITH LOW RELATIVE HUMIDITY WILL COMBINE WITH DRY VEGETATION WHICH WILL RESULT IN DANGEROUS FIRE WEATHER CONDITIONS FOR UINTA AND SOUTHERN LINCOLN COUNTIES WHICH INCLUDES FIRE WEATHER ZONE 277 FOR THIS AFTERNOON. THE STRONGER WINDS AND LOW RELATIVE HUMIDITY WITH UNSEASONABLY WARM TEMPERATURES WILL SPREAD ACROSS MUCH OF WESTERN AND CENTRAL WYOMING ON SUNDAY AFTERNOON. WYZ277-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ /O.CON.KRIW.FW.W.0013.000000T0000Z-100919T0200Z/ LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS- 233 PM MDT SAT SEP 18 2010 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 277... ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 277... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...THE COMBINATION OF SIGNIFICANT WINDS AND LOW RELATIVE HUMIDITY WILL COMBINE WITH VERY DRY VEGETATION TO PRODUCE DANGEROUS FIRE WEATHER CONDITIONS FOR THIS AFTERNOON. THESE CONDITIONS WILL RETURN SUNDAY AFTERNOON. * AFFECTED AREA...FIRE WEATHER ZONE 277. * WIND...WEST SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 30 MPH. * HUMIDITY...10 PERCENT. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ279-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 279... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 279. * WIND...SOUTHWEST WIND OF 15 TO 20 MPH WILL GUST TO AROUND 35 MPH. * HUMIDITY...5 TO 10 PERCENT. 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. && $$ WYZ278-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 278... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 278. * WIND...SOUTHWEST WIND OF 15 TO 20 MPH WILL GUST TO AROUND 35 MPH. * HUMIDITY...5 TO 10 PERCENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ289-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 289... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 289. * WIND...SOUTHWEST WIND OF 20 TO 25 MPH WILL GUST TO AROUND 45 MPH. * HUMIDITY...5 TO 10 PERCENT. 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. && $$ WYZ288-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 288... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 288. * WIND...SOUTHWEST WIND OF 20 TO 30 MPH WILL GUST TO AROUND 45 MPH. * HUMIDITY...5 TO 15 PERCENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ283-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ UPPER WIND RIVER BASIN/WIND RIVER BASIN- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 283... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 283. * WIND...SOUTHWEST WIND OF 15 TO 20 MPH WILL GUST TO AROUND 30 MPH. * HUMIDITY...5 TO 10 PERCENT. 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. && $$ WYZ285-287-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ SOUTH BIGHORN MOUNTAINS-OWL CREEK MOUNTAINS- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 285 AND 287... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONES 285 AND 287. * WIND...SOUTHWEST WIND OF 15 TO 25 MPH WILL GUST TO AROUND 35 MPH. * HUMIDITY...5 TO 15 PERCENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ275-282-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ NORTH BIG HORN BASIN/WORLAND BLM-SOUTH BIG HORN BASIN/WORLAND BLM- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 275 AND 282... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONES 275 AND 282. * WIND...SOUTHWEST WIND OF 10 TO 15 MPH WILL GUST TO AROUND 25 MPH. * HUMIDITY...5 TO 10 PERCENT. 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. && $$ WYZ276-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ CODY FOOTHILLS- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 276... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 276. * WIND...SOUTHWEST WIND OF 10 TO 15 MPH WILL GUST TO AROUND 25 MPH. * HUMIDITY...5 TO 10 PERCENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ286-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ ABSAROKA MOUNTAINS/NORTH SHOSHONE NF- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 286... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 286. * WIND...SOUTHWEST WIND OF 15 TO 20 MPH WILL GUST TO AROUND 30 MPH. * HUMIDITY...5 TO 15 PERCENT. 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. && $$ WYZ280-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ NATRONA COUNTY/CASPER BLM- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 280... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. *SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 280. * WIND...SOUTHWEST WIND OF 15 TO 25 MPH WILL GUST TO AROUND 40 MPH. * HUMIDITY...5 TO 10 PERCENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ300-190845- /O.NEW.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ CASPER MOUNTAIN- 233 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 300... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING. * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 300. * WIND...SOUTHWEST WIND OF 15 TO 20 MPH WILL GUST TO AROUND 30 MPH. * HUMIDITY...5 TO 15 PERCENT. 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. && $$ HTTP://WEATHER.GOV/RIVERTON
087 WWUS85 KRIW 190201 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 801 PM MDT SAT SEP 18 2010 ...DANGEROUS FIRE WEATHER CONDITIONS ARE EXPECTED FOR MUCH OF SOUTHERN...CENTRAL AND NORTH CENTRAL WYOMING FOR SUNDAY AFTERNOON AND EARLY EVENING... .SIGNIFICANT WINDS COMBINED WITH LOW RELATIVE HUMIDITY AND UNSEASONABLY WARM TEMPERATURES COMBINING WITH DRY VEGETATION WILL RESULT IN DANGEROUS FIRE WEATHER CONDITIONS FOR MUCH OF SOUTHERN...CENTRAL AND NORTH CENTRAL WYOMING FOR SUNDAY AFTERNOON AND EARLY EVENING. WYZ277-191415- /O.CAN.KRIW.FW.W.0013.000000T0000Z-100919T0200Z/ /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 277......FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 277... ...RED FLAG WARNING IS CANCELLED FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 277......FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 277... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS EXPIRED THE RED FLAG WARNING IN EFFECT FOR THIS EVENING AS TEMPERATURES HAVE COOLED...THE RELATIVE HUMIDITY HAS INCREASED AND THE WINDS HAVE DIMINISHED. HOWEVER THE FIRE WEATHER WATCH STILL REMAINS IN EFFECT FOR SUNDAY AFTERNOON AND EARLY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ279-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 279... * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 279. * WIND...SOUTHWEST WIND OF 15 TO 20 MPH WILL GUST TO AROUND 35 MPH. * HUMIDITY...5 TO 10 PERCENT. 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. && $$ WYZ278-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 278... * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 278. * WIND...SOUTHWEST WIND OF 15 TO 20 MPH WILL GUST TO AROUND 35 MPH. * HUMIDITY...5 TO 10 PERCENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ289-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 289... * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 289. * WIND...SOUTHWEST WIND OF 20 TO 25 MPH WILL GUST TO AROUND 45 MPH. * HUMIDITY...5 TO 10 PERCENT. 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. && $$ WYZ288-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 288... * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 288. * WIND...SOUTHWEST WIND OF 20 TO 30 MPH WILL GUST TO AROUND 45 MPH. * HUMIDITY...5 TO 15 PERCENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ283-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ UPPER WIND RIVER BASIN/WIND RIVER BASIN- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 283... * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 283. * WIND...SOUTHWEST WIND OF 15 TO 20 MPH WILL GUST TO AROUND 30 MPH. * HUMIDITY...5 TO 10 PERCENT. 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. && $$ WYZ285-287-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ SOUTH BIGHORN MOUNTAINS-OWL CREEK MOUNTAINS- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 285 AND 287... * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONES 285 AND 287. * WIND...SOUTHWEST WIND OF 15 TO 25 MPH WILL GUST TO AROUND 35 MPH. * HUMIDITY...5 TO 15 PERCENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ275-282-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ NORTH BIG HORN BASIN/WORLAND BLM-SOUTH BIG HORN BASIN/WORLAND BLM- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 275 AND 282... * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONES 275 AND 282. * WIND...SOUTHWEST WIND OF 10 TO 15 MPH WILL GUST TO AROUND 25 MPH. * HUMIDITY...5 TO 10 PERCENT. 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. && $$ WYZ276-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ CODY FOOTHILLS- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 276... * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 276. * WIND...SOUTHWEST WIND OF 10 TO 15 MPH WILL GUST TO AROUND 25 MPH. * HUMIDITY...5 TO 10 PERCENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ286-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ ABSAROKA MOUNTAINS/NORTH SHOSHONE NF- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 286... * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 286. * WIND...SOUTHWEST WIND OF 15 TO 20 MPH WILL GUST TO AROUND 30 MPH. * HUMIDITY...5 TO 15 PERCENT. 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. && $$ WYZ280-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ NATRONA COUNTY/CASPER BLM- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 280... *SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 280. * WIND...SOUTHWEST WIND OF 15 TO 25 MPH WILL GUST TO AROUND 40 MPH. * HUMIDITY...5 TO 10 PERCENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ WYZ300-191415- /O.CON.KRIW.FW.A.0009.100919T1800Z-100920T0200Z/ CASPER MOUNTAIN- 801 PM MDT SAT SEP 18 2010 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 300... * SUMMARY...WINDY CONDITIONS WITH LOW RELATIVE HUMIDITY AND WARM TEMPERATURES WILL DEVELOP AROUND NOON SUNDAY AND CONTINUE UNTIL 8 PM MDT. * AFFECTED AREA...FIRE WEATHER ZONE 300. * WIND...SOUTHWEST WIND OF 15 TO 20 MPH WILL GUST TO AROUND 30 MPH. * HUMIDITY...5 TO 15 PERCENT. 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. && $$ HTTP://WEATHER.GOV/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 Sep 18, 3:11 AM MDT, 5 minutes earlier.
Area forecast discussion, Sep 18, 3:11 AM MDT, 5 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 311 AM MDT SAT SEP 18 2010 .SHORT TERM...TODAY THROUGH MONDAY NIGHT A STRONG 523MB UPPER LOW OVER SOUTHWEST HUDSON BAY HAS SWUNG A TRAILING TROUGH OF LOW PRESSURE ACROSS MONTANA AND THE NORTHERN PLAINS GIVING OUR NORTHEAST ZONES A STRONG GLANCING BLOW IN THE FORM OF A STRONG BACK DOOR COLD FRONT. THE COLD FRONT HAS TRACKED ALL THE WAY TO THE EAST SIDE OF THE DIVIDE. THERE IS QUITE THE CONTRAST IN TEMPERATURES ON EITHER SIDE OF THIS FRONT. CURRENTLY IN BYG THE TEMP IS 36 IN SPITE OF A SOLID LOW OVERCAST. ON THE OTHER SIDE OF THE DIVIDE RKS IS STILL A BALMY 64 AND EVEN JACKSON IS 50. THIS IS AFTER ROCK SPRINGS BROKE THEIR RECORD HIGH FOR FRIDAY WITH A HIGH OF 83. CASPER HAD A NEAR RECORD HIGH OF 87. THE COLD AIR THAT IS CURRENTLY PLAGUING JOHNSON COUNTY APPEARS TO BE RATHER SHALLOW IN NATURE WITH MOST NEARBY MOUNTAIN LOCATIONS AS WARM OR WARMER THAN THE LOWER ELEVATIONS. CLOUD PEAK RESERVOIR SITUATED AT 9860FT IN THE BIG HORN MTNS IS 47 DEGREES WHICH MATCHES UP WITH THE 7C 700MB TEMP FORECASTED BY THE MODELS FOR THE PRESENT TIME FRAME. SINCE THERE ARE SOME SPOTTY LIGHT SHOWERS IN THIS AREA (THERE HAVE BEEN STRONGER THUNDERSTORMS IN MONTANA) THERE WAS A LITTLE CONCERN THAT IF ANY PRECIP FELL WHERE ANY TEMPS MAY BE BELOW FREEZING THE PRECIP COULD FALL AS FREEZING DRIZZLE OR LIGHT RAIN SINCE THE CLOUDS ABOVE WOULD NOT BE COLD ENOUGH TO PRODUCE ICE CRYSTALS. BUT DEW POINTS ARE AROUND 33 AT THE LOWER ELEVATIONS AND THE ONLY LOCATIONS THAT ARE AT OR BELOW FREEZING ARE SOME OF THE MID SLOPE LOCATIONS SUCH AS SCHOOL HOUSE AT 8604 FEET WHERE THE TEMP IS 28 DEGREES AND AT POKER CREEK AT 6440 FEET WHERE IT IS 32 DEGREES. EVEN IN THE BIG HORN BASIN THE LOWER ELEVATIONS ARE COLDER THAN SOME OF THE MOUNTAIN LOCATIONS ON THE WEST SLOPE OF THE BIG HORN MTNS. FRANNIE IS 38...GREYBULL IS 43 AND CODY 36. IN CONTRAST MILL CREEK IS 49 AT 8898 FEET AND BONE SPRINGS DIVIDE AT 9350 FEET IS ALSO 49 AS THE SHALLOW COLD AIR BLEEDS IN FROM THE NORTH BETWEEN THE BIG HORNS AND THE ABSAROKAS. SO FAR MOST OF THE POST FRONTAL LOW CLOUDS SEEM TO BE CONFINED TO AREAS ALONG AND NORTH OF THE OWL CREEK MTNS AND ALONG AND EAST OF THE BIG HORN MTNS. BECAUSE OF THE SHALLOW NATURE OF THE COLD AIR THIS COLDER AIRMASS WILL REMAIN EAST OF THE DIVIDE TODAY. WILL MENTION FOG FOR THE INTERSTATE 25/90 CORRIDOR...THE LOWER EAST SLOPE OF THE BIG HORN MTNS...THE LOWER EAST SLOPE OF THE WIND RIVER MTNS AND THE TOP OF THE CASPER ARCH ALONG HIGHWAY 20/26 FOR THIS MORNING. TODAY THE FOCUS TURNS BACK TO THE WARM AND DRY AIR IN SOUTHWEST WY WHERE WE SHOULD SEE A REPEAT OF THE SAME CONDITIONS THAT WERE EXPERIENCED IN UINTA AND SOUTHERN LINCOLN COUNTY FRIDAY. RED FLAG CONDITIONS ARE ONCE AGAIN EXPECTED THERE WITH WEST SOUTHWEST WINDS OF 15 TO 25 MPH AND AN RH AROUND 10 PERCENT. AREAS EAST OF THE DIVIDE WILL REMAIN COOLER...ESPECIALLY IN JOHNSON COUNTY TODAY. THEN ON SUNDAY THE COOLER AIR WILL RETREAT NORTHEAST AND MODIFY. THE WARM AND DRY SOUTHWEST WINDS WILL PENETRATE NORTHEAST INTO NATRONA COUNTY AS THE H7 WINDS WILL INCREASE DUE TO THE APPROACH OF AN OPENING PACIFIC TROUGH THAT IS CURRENTLY CLOSED AND SPINNING OFF THE PACIFIC AT 40N/140W... WILL CONTINUE TO MONITOR THIS FOR THE POTENTIAL FOR FUTURE MORE WIDESPREAD RED FLAG CONDITIONS FOR SUNDAY. BY MONDAY H7 SOUTHWEST WINDS WILL INCREASE TO 40 KNOTS. HOWEVER...THE H7 ISOHYPSE ARE SPACED TOO FAR APART FOR A HIGH WIND EVENT IN SPITE OF THE FACT THAT THE MEX INDICATES 30 KNOT WINDS FOR CASPER MONDAY. SO THE FOCUS FOR MONDAY IS ONCE AGAIN ANTICIPATED TO BE THE POTENTIAL FOR RED FLAG CONDITIONS FOR WINDS...BORDERLINE LOW RH AND ISOLATED DRY LIGHTNING OVER CENTRAL AND SOUTHERN WY. AS FAR AS PRECIP IS CONCERNED WITH THIS TROUPHPA SCHEDULED FOR MONDAY...INSTABILITY AND MOISTURE APPEARS THAT IT WILL BE GREATEST OVER THE NORTHERN CWA FOR SUNDAY AFTERNOON THROUGH MONDAY AND MONDAY NIGHT WITH THE GREATEST CHANCE OF PRECIP ON MONDAY WITH BETTER THAN 50 POPS OVER YELLOWSTONE. .LONG TERM...TUESDAY THROUGH SATURDAY PROGRESSIVE ZONAL FLOW PREVAILS DURING THIS PERIOD WITH NEXT PACIFIC TROUGH PASSAGE...ALONG WITH HIGHER CHANCES FOR SHOWERS AND ISOLATED THUNDERSTORMS...DUE LATE WEDNESDAY THROUGH THURSDAY MORNING TIMEFRAME. MEDIUM-RANGE GLOBAL MODELS GENERALLY AGREE ON ESTABLISHING PROGRESSIVE WESTERLY FLOW ACROSS THE PACIFIC AND BTWN 40-45N ACROSS THE WESTERN U.S. HOWEVER...MODELS CONTINUE TO SHOW POOR TO FAIR RUN TO RUN CONSISTENCY AND QUITE A BIT OF SPREAD IN HANDLING SHORTWAVES WITHIN THIS FLOW. ON TUESDAY...NORTHERN STREAM CLIPPER DIVING SOUTH ACROSS CENTRAL CANADA DRIVES COLD FRONT INTO NORTHERN WYOMING DURING THE AFTERNOON...INTO CENTRAL WYOMING IN THE EVENING. THIS FRONT MAY BRING SOME LOW CLOUDS AND SPOTTY LIGHT PRECIPITATION NEAR THE MONTANA BORDER. NEXT PACIFIC TROUGH MOVES ONTO WEST COAST TUESDAY NIGHT WITH UPPER TROUGH MOVING ACROSS WYOMING WEDNESDAY NIGHT. EC NOW ON THE FAST END OF GUIDANCE WITH GFS AND GEM ON SLOW END. FORECAST BRINGS INCREASING CHANCES FOR SHOWERS AND ISOLATED THUNDERSTORMS INTO THE WEST DURING THE DAY WEDNESDAY WITH THESE CHANCES...HIGHEST ACROSS THE NORTH...SPREADING INTO CENTRAL WYOMING WEDNESDAY NIGHT AND LINGERING THROUGH THURSDAY MORNING. CONFIDENCE LOWER FRIDAY AND SATURDAY WITH EC BRINGING NEXT PACIFIC TROUGH INLAND ON FRIDAY AND ACROSS WYOMING SATURDAY...A MUCH WETTER AND COOLER SOLUTION. GFS RETROGRADES UPPER HIGH OVER LOWER MISSISSIPPI VALLEY INTO SW U.S. WITH UPPER TROUGH REMAINING OFF NW COAST THROUGH SATURDAY...A WARM AND GENERALLY DRY SOLUTION. FORECAST KEEPS LOW CHANCES OF PRECIPITATION IN THE WESTERN AND NORTHERN MOUNTAINS IN WESTERLY FLOW AND WARMS TEMPERATURES TO ABOVE NORMAL FRIDAY AND SATURDAY...WEIGHTED MORE TOWARD GFS SOLUTION THAT IS A BETTER MATCH WITH GEFS MEAN THIS MORNING. && .AVIATION... EAST OF THE DIVIDE...IFR/MVFR CEILINGS ARE EXPECTED ACROSS MUCH OF THE LOWER ELEVATIONS EAST OF THE DIVIDE...ESPECIALLY JOHNSON AND NATRONA COUNTIES. THE WIND RIVER AND BIG HORN BASINS SHOULD HAVE THE LOW CLOUDS DISSIPATE BY AROUND 15Z...WHILE NATRONA AND JOHNSON COUNTIES LOW CLOUDS WILL HOLD ON LONGER UNTIL AROUND 18Z. AFTER 18Z...VFR CONDITIONS ARE EXPECTED WITH CONSIDERABLE HIGH LEVEL CLOUDS. WINDS ARE EXPECTED TO BE MAINLY LIGHT. WEST OF THE DIVIDE...VFR CONDITIONS WILL OCCUR WITH BREEZY SOUTH TO SOUTHWEST WINDS DEVELOPING IN THE AFTERNOON. CONSIDERABLE HIGH LEVEL CLOUDS ARE EXPECTED TODAY. THE EXCEPTION TO THE VFR CONDITIONS COULD BE SMOKE FROM AREA FIRES...WHICH COULD REDUCE LOCAL VISIBILITY TO MVFR CONDITIONS...MAINLY IN JACKSON HOLE. && .FIRE WEATHER... A STRONG COLD FRONT WILL STALL OUT ALONG THE CONTINENTAL DIVIDE TODAY AND WILL SEPARATE UNSEASONABLY WARM AIR WEST OF THE DIVIDE FROM CONTRASTING COOLER AIR TO THE EAST WITH THE COOLEST AIR FORECAST TO BE OVER ZONE 281 WHERE MANY LOWER ELEVATIONS WILL NOT RISE OUT OF THE 60S. A RED FLAG WARNING FOR FIRE WEATHER ZONE 277 IS IN EFFECT FROM 1200 THIS AFTERNOON THROUGH 2000 THIS EVENING FOR SIGNIFICANT WINDS AND LOW RELATIVE HUMIDITY ON THE WARM AND DRY SIDE OF THE BOUNDARY. BY SUNDAY THE WARM AND DRY AIR WILL PENETRATE NORTHEAST INTO ZONE 280 WHERE CRITICAL FIRE WEATHER CONCERNS COULD PLAGUE ZONES 277...279...289...280...300 AND 288. A STRONG COLD FRONT WILL PUSH ACROSS THE AREA MONDAY. EVEN STRONGER WINDS ARE EXPECTED AHEAD OF THE FRONT ALONG WITH BORDERLINE LOW RH AS WELL AS ISOLATED DRY LIGHTNING FOR CONTINUED CRITICAL FIRE WEATHER CONCERNS ACROSS CENTRAL AND SOUTHERN WYOMING FOR MONDAY. AS FAR AS PRECIP IS CONCERNED WITH THIS TROUPHPA SCHEDULED FOR MONDAY...INSTABILITY AND MOISTURE APPEARS THAT IT WILL BE GREATEST OVER THE NORTHERN CWA FOR SUNDAY AFTERNOON THROUGH MONDAY AND MONDAY NIGHT WITH THE GREATEST CHANCE OF PRECIP ON MONDAY WITH BETTER THAN 50 POPS OVER YELLOWSTONE. && .RIW WATCHES/WARNINGS/ADVISORIES... RED FLAG WARNING FROM NOON MDT TODAY THROUGH 8 P.M. THIS EVENING WYZ277. && SHORT TERM...LIPSON LONG TERM...AEM AVIATION...WM FIRE WEATHER...LIPSON
Hazardous weather outlook, Sep 17, 7:34 PM MDT, 7 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 734 PM MDT FRI SEP 17 2010 WYZ001>020-022>030-181200- ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST- BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS- EAST SWEETWATER COUNTY-FLAMING GORGE- GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS- NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN- NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS- ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES- SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN- SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY- TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN- UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN- WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST- YELLOWSTONE NATIONAL PARK- 734 PM MDT FRI SEP 17 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY WARM...DRY AND BREEZY TO WINDY CONDITIONS WILL RESULT IN POSSIBLE CRITICAL FIRE WEATHER CONDITIONS AGAIN SATURDAY ACROSS SOUTHERN WYOMING. MORE WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS ARE LIKELY SUNDAY...ESPECIALLY ACROSS FREMONT AND NATRONA COUNTIES SUNDAY AFTERNOON. ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS THE AREA MONDAY AND WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. TEAM RIVERTON
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 2:33 PM MDT | Fire Weather Watch | RIW | Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 5 more | 15 hr |
Nearby
Red Flag Warnings in Wyoming, 2010Every red flag warning in 2010
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.