Alert archive / Wyoming / Red Flag Warnings in 2016
Red Flag Warning 13, NWS Riverton, WY
NWS Riverton, WY issued this red flag warning at Jul 25, 2016, 2:26 AM MDT for 5 counties in Wyoming. It took effect at Jul 25, 2016, 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
- Jul 25, 2016, 2:26 AM MDT (08:26 UTC)
- In effect from
- Jul 25, 2016, 12:00 PM MDT
- Expired
- Jul 25, 2016, 9:00 PM MDT
- In force
- 9 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Natrona County, WY, Washakie County, WY
The radar
The Riverton/Lander radar (KRIW), 86 km from the middle of the area, began a volume at 08:27 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
Rapid City, SD (KRAP), launched 00:00Z, 8.4 hours before the alert went out and 386 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
- 9 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 2736 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
900 WWUS85 KRIW 250826 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 226 AM MDT MON JUL 25 2016 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED ACROSS PORTIONS OF CENTRAL WYOMING TODAY... .WARM AND DRY CONDITIONS WILL CONTINUE TODAY ACROSS MUCH OF THE STATE. AS THE AFTERNOON PROGRESSES...SOME AREAS WILL SEE THE DEVELOPMENT OF GUSTY WIND WITH MOST IMPACTED AREAS SEEING A STRONG INCREASE FIRE RELATED INSTABILITY. THE COMBINATION OF THESE ELEMENTS IS VERY FAVORABLE TO CREATE EXPLOSIVE FIRE GROWTH THIS AFTERNOON. WYZ280-252200- /O.UPG.KRIW.FW.A.0011.160725T1800Z-160726T0300Z/ /O.NEW.KRIW.FW.W.0013.160725T1800Z-160726T0300Z/ NATRONA COUNTY/CASPER BLM- 226 AM MDT MON JUL 25 2016 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WARM TEMPERATURES...LOW HUMIDITY...AND HIGH HAINES INDEX FOR FIRE WEATHER ZONE 280... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * WIND...WEST TO SOUTHWEST 10 TO 15 MPH WITH GUSTS TO 20 MPH POSSIBLE AROUND THE FOOTHILLS AREA. * HUMIDITY...9 TO 12 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. && $$ WYZ283-288-252200- /O.UPG.KRIW.FW.A.0011.160725T1800Z-160726T0300Z/ /O.NEW.KRIW.FW.W.0013.160725T1800Z-160726T0300Z/ UPPER WIND RIVER BASIN/WIND RIVER BASIN- EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF- 226 AM MDT MON JUL 25 2016 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WARM TEMPERATURES...LOW HUMIDITY...GUSTY WIND AND HIGH HAINES INDEX FOR FIRE WEATHER ZONES 283 AND 288... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * WIND...WEST TO NORTHWEST 15 TO 20 MPH WITH SOME AREAS SEEING GUSTS TO 30 MPH...ESPECIALLY AREAS NORTHWEST OF CROWHEART. * HUMIDITY...9 TO 14 PERCENT. * HAINES INDEX...5 TO 6. * IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. OUTDOOR BURNING IS NOT RECOMMENDED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$ WYZ285-287-252200- /O.UPG.KRIW.FW.A.0011.160725T1800Z-160726T0300Z/ /O.NEW.KRIW.FW.W.0013.160725T1800Z-160726T0300Z/ SOUTH BIGHORN MOUNTAINS-OWL CREEK MOUNTAINS- 226 AM MDT MON JUL 25 2016 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WARM TEMPERATURES...LOW HUMIDITY...AND HIGH HAINES INDEX FOR FIRE WEATHER ZONES 285 AND 287... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * WIND...WEST TO SOUTHWEST 10 TO 15 MPH. * HUMIDITY...9 TO 14 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. && $$ TEAM RIVERTON
2 follow-up statements
419 WWUS85 KRIW 251732 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 1132 AM MDT MON JUL 25 2016 ...RED FLAG WARNING FOR STRONG WIND GUSTS...LOW HUMIDITY AND A VERY UNSTABLE AIR MASS ACROSS CENTRAL WYOMING THIS AFTERNOON AND EVENING... .STRONGER WINDS ALOFT WILL MOVE OVER CENTRAL WYOMING TODAY. A WEAK COLD FRONT THAT HAS BROUGHT EAST WINDS AND LOW LEVEL MOISTURE TO THE AREA WILL ERODE RAPIDLY WITH THE STRONGER WINDS AND VERY DRY AIR MIXING DOWN TO THE SURFACE FROM NOON TO 3 PM MDT. THE AIR MASS WILL BECOME VERY UNSTABLE ALLOWING SMOKE COLUMNS TO RISE SEVERAL THOUSAND FEET ABOVE THE GROUND. THE STRONG WIND AND LOW RELATIVE HUMIDITY WILL CONTINUE UNTIL ABOUT 9 PM MDT. WYZ280-260300- /O.CON.KRIW.FW.W.0013.160725T1800Z-160726T0300Z/ NATRONA COUNTY/CASPER BLM- 1132 AM MDT MON JUL 25 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR HOT TEMPERATURES...LOW HUMIDITY...AND HIGH HAINES INDEX OF 6 FOR FIRE WEATHER ZONE 280... * WIND...WEST TO SOUTHWEST 15 TO 20 MPH WITH GUSTS TO 25 MPH. * HUMIDITY...7 TO 12 PERCENT. * HAINES INDEX...6. * IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. OUTDOOR BURNING IS NOT RECOMMENDED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$ WYZ283-288-260300- /O.CON.KRIW.FW.W.0013.160725T1800Z-160726T0300Z/ UPPER WIND RIVER BASIN/WIND RIVER BASIN- EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF- 1132 AM MDT MON JUL 25 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WARM TEMPERATURES...LOW HUMIDITY...GUSTY WIND AND HIGH HAINES INDEX OF 6 FOR FIRE WEATHER ZONES 283 AND 288... * WIND...WEST TO NORTHWEST 15 TO 20 MPH WITH GUSTS TO 30 MPH. * HUMIDITY...6 TO 11 PERCENT. * HAINES INDEX...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. && $$ WYZ285-287-260300- /O.CON.KRIW.FW.W.0013.160725T1800Z-160726T0300Z/ SOUTH BIGHORN MOUNTAINS-OWL CREEK MOUNTAINS- 1132 AM MDT MON JUL 25 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WARM TEMPERATURES...LOW HUMIDITY...AND HIGH HAINES INDEX OF 6 FOR FIRE WEATHER ZONES 285 AND 287... * WIND...WEST TO SOUTHWEST 15 TO 20 MPH WITH GUSTS TO 30 MPH. * HUMIDITY...7 TO 12 PERCENT. * HAINES INDEX...6. * IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. OUTDOOR BURNING IS NOT RECOMMENDED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$
667 WWUS85 KRIW 260245 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 845 PM MDT MON JUL 25 2016 WYZ280-260345- /O.EXP.KRIW.FW.W.0013.000000T0000Z-160726T0300Z/ NATRONA COUNTY/CASPER BLM- 845 PM MDT MON JUL 25 2016 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR HOT TEMPERATURES...LOW HUMIDITY...AND HIGH HAINES INDEX OF 6 FOR FIRE WEATHER ZONE 280... WEATHER CONDITIONS WILL IMPROVE AFTER 900 PM. WIDESPREAD RED FLAG CONDITIONS WILL SUBSIDE. THUS THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 900 PM MDT. $$ WYZ283-288-260345- /O.EXP.KRIW.FW.W.0013.000000T0000Z-160726T0300Z/ UPPER WIND RIVER BASIN/WIND RIVER BASIN- EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF- 845 PM MDT MON JUL 25 2016 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WARM TEMPERATURES...LOW HUMIDITY...GUSTY WIND AND HIGH HAINES INDEX OF 6 FOR FIRE WEATHER ZONES 283 AND 288... WEATHER CONDITIONS WILL IMPROVE AFTER 900 PM. WIDESPREAD RED FLAG CONDITIONS WILL SUBSIDE. THUS THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 900 PM MDT. $$ WYZ285-287-260345- /O.EXP.KRIW.FW.W.0013.000000T0000Z-160726T0300Z/ SOUTH BIGHORN MOUNTAINS-OWL CREEK MOUNTAINS- 845 PM MDT MON JUL 25 2016 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WARM TEMPERATURES...LOW HUMIDITY...AND HIGH HAINES INDEX OF 6 FOR FIRE WEATHER ZONES 285 AND 287... WEATHER CONDITIONS WILL IMPROVE AFTER 900 PM. WIDESPREAD RED FLAG CONDITIONS WILL SUBSIDE. THUS THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 900 PM MDT. $$
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.