Alert archive / Wyoming / Special Weather Statements in 2016
Special Weather Statement, NWS Riverton, WY
NWS Riverton, WY issued this special weather statement at May 9, 2016, 8:02 PM MDT for Johnson County, Wyoming. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 9, 2016, 8:02 PM MDT (02:02 UTC)
- Expired
- May 9, 2016, 8:45 PM MDT
- In force
- 43 min
- Issued by
- NWS Riverton, WY
County Johnson County, WY
The radar
The Riverton/Lander radar (KRIW), 171 km from the middle of the area, began a volume at 02:05 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 text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at May 9, 3:06 PM MDT, 4 hours 56 minutes earlier.
Area forecast discussion, May 9, 3:06 PM MDT, 4 hours 56 minutes before
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</html>Hazardous weather outlook, May 9, 3:07 AM MDT, 16 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 307 AM MDT MON MAY 9 2016 WYZ001>020-022>030-101200- 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- 307 AM MDT MON MAY 9 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. ...RIVER FLOOD WARNING FOR THE LITTLE WIND RIVER NEAR RIVERTON THROUGH TUESDAY MORNING... ...AREAL FLOOD WARNING FOR MUCH OF CENTRAL AND SOUTHERN FREMONT COUNTIES THROUGH 300 PM MDT THIS AFTERNOON... .DAY ONE...THIS AFTERNOON AND TONIGHT RAIN/SNOWMELT FLOODING CONTINUES FOR PORTIONS OF CENTRAL AND SOUTHERN FREMONT COUNTY. MORE SHOWERS AND THUNDERSTORMS WILL OCCUR ACROSS THE NORTHWEST AND NORTH TODAY. LIGHT TO OCCASIONALLY MODERATE SNOW TO RETURN TO THE WESTERN...CENTRAL AND NORTHERN MOUNTAINS AND VALLEYS TONIGHT...WITH SNOW LOWERING TO VALLEY FLOORS BY TUESDAY MORNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY MORE RAIN AND SNOW SHOWERS WILL CONTINUE ACROSS THE WEST AND NORTH TUESDAY AS A COLD FRONT WILL BRING MORE WIDESPREAD SHOWERS TO THE NORTH WITH SNOW DOWN AS LOW AS 5500 FEET TUESDAY NIGHT. THUNDERSTORMS AND SHOWERS ARE EXPECTED TO INCREASE ONCE AGAIN OVER THE WEEKEND FROM WEST TO EAST ALONG WITH FALLING TEMPERATURES ONCE SATURDAY NIGHT AND SUNDAY ALONG WITH SOME MOUNTAIN AND POTENTIAL FOOTHILL SNOW. WARMER TEMPERATURES THOUGH FRIDAY AND SATURDAY WILL INCREASE RUNOFF FROM SNOWMELT ACROSS WESTERN AND CENTRAL WYOMING. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT ANY FLOODING...HAIL...WIND GUSTS OVER 45 MPH AS WELL AS ANY HEAVY SNOW ACCUMULATIONS.
In the hours before
Special weather statement, May 9, 6:49 PM MDT, 1 hour 13 minutes before
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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
710 PM MDT MON MAY 9 2016
WYZ009-011-020-100145-
SOUTHEAST JOHNSON COUNTY-NATRONA COUNTY LOWER ELEVATIONS-BIGHORN
MOUNTAINS SOUTHEAST-
710 PM MDT MON MAY 9 2016
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL NATRONA AND SOUTH
CENTRAL JOHNSON COUNTIES UNTIL 745 PM MDT...
AT 707 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM RED WALL TO 10 MILES
NORTHEAST OF NATRONA...AND MOVING EAST AND NORTHEAST AT 25 MPH.
THE MAIN HAZARDS WILL BE BRIEF HEAVY RAINFALL...SMALL HAIL...AND
DANGEROUS LIGHTNING. HEAVY RAINFALL MAY LEAD TO FLOODING OF LOW
LYING OR POOR DRAINAGE AREAS. DO NOT DRIVE YOUR VEHICLE THROUGH
FLOODED ROADWAYS.
THESE STORMS WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH CENTRAL
NATRONA AND SOUTH CENTRAL JOHNSON COUNTIES...INCLUDING THE FOLLOWING
LOCATIONS...WILLOW CREEK SCHOOL.
LAT...LON 4358 10662 4332 10645 4311 10642 4304 10659
4323 10682 4341 10702 4356 10690
TIME...MOT...LOC 0107Z 253DEG 21KT 4338 10688 4325 10673 4311 10657
21Special weather statement, May 9, 7:16 PM MDT, 46 minutes before
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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
719 PM MDT MON MAY 9 2016
WYZ004-006-008-100200-
NORTH BIG HORN BASIN-SOUTHEAST BIG HORN BASIN-BIGHORN MOUNTAINS WEST-
719 PM MDT MON MAY 9 2016
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WASHAKIE AND SOUTH
CENTRAL BIG HORN COUNTIES UNTIL 800 PM MDT...
AT 719 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM GREYBULL TO 10 MILES WEST
OF MANDERSON...AND MOVING NORTHEAST AT 30 MPH.
HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THESE STORMS.
STRONG THUNDERSTORMS WILL BE NEAR...
GREYBULL AROUND 725 PM MDT.
BASIN AND MANDERSON AROUND 740 PM MDT.
SHELL AROUND 745 PM MDT.
SHELL CANYON AROUND 755 PM MDT.
SHELL FALLS AROUND 800 PM MDT.
LAT...LON 4471 10768 4469 10769 4468 10767 4470 10762
4466 10752 4464 10753 4463 10751 4464 10750
4462 10749 4426 10762 4411 10827 4454 10810
4471 10772
TIME...MOT...LOC 0119Z 242DEG 27KT 4450 10805 4422 10816
BRAUNSpecial weather statement, May 9, 8:02 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 802 PM MDT MON MAY 9 2016 WYZ009-011-020-100245- SOUTHEAST JOHNSON COUNTY-NATRONA COUNTY LOWER ELEVATIONS-BIGHORN MOUNTAINS SOUTHEAST- 802 PM MDT MON MAY 9 2016 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN NATRONA AND SOUTHEASTERN JOHNSON COUNTIES UNTIL 845 PM MDT... AT 802 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR HOLE IN THE WALL TO 14 MILES SOUTHWEST OF RED WALL...AND MOVING NORTHEAST AT 55 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS. STRONG THUNDERSTORMS WILL BE NEAR... HOLE IN THE WALL AROUND 805 PM MDT. RED WALL AROUND 820 PM MDT. FORT RENO HISTORICAL SITE AROUND 845 PM MDT. OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE SUSSEX...WILLOW CREEK SCHOOL...SALT CREEK COUNTRY CLUB AND MIDWEST SCHOOL. THIS INCLUDES INTERSTATE 25 BETWEEN MILE MARKERS 226 AND 251. PRECAUTIONARY/PREPAREDNESS ACTIONS... FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. && LAT...LON 4396 10608 4340 10626 4324 10728 4358 10685 TIME...MOT...LOC 0202Z 243DEG 46KT 4356 10685 4332 10716 BRAUN
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 6:00 PM MDT | Special Weather Statement | RIW | Big Horn | 45 min |
| May 9, 6:20 PM MDT | Special Weather Statement | RIW | Washakie | 25 min |
| May 9, 6:32 PM MDT | Special Weather Statement | RIW | Natrona | 43 min |
| May 9, 6:37 PM MDT | Special Weather Statement | RIW | Big Horn | 38 min |
| May 9, 6:49 PM MDT | Special Weather Statement | RIW | 41 min | |
| May 9, 6:53 PM MDT | Special Weather Statement | RIW | Big Horn | 37 min |
| May 9, 7:10 PM MDT | Special Weather Statement | RIW | Natrona | 35 min |
| May 9, 7:16 PM MDT | Special Weather Statement | RIW | 44 min | |
| May 9, 7:19 PM MDT | Special Weather Statement | RIW | Big Horn | 41 min |
| May 9, 8:18 PM MDT | Special Weather Statement | RIW | Big Horn | 42 min |
| May 9, 11:07 PM MDT | Special Weather Statement | RIW | Natrona | 53 min |
| May 9, 11:28 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 32 min |
| May 9, 11:57 PM MDT | Special Weather Statement | RIW | Natrona | 48 min |
| May 10, 12:58 AM MDT | Special Weather Statement | RIW | Natrona | 32 min |
| May 10, 1:32 AM MDT | Special Weather Statement | RIW | Natrona | 28 min |
| May 10, 1:56 PM MDT | Freeze Warning | RIW | Fremont, Lincoln, Natrona, Sublette, Sweetwater | 19 hr |
Nearby
Special Weather Statements in Wyoming, 2016Every special weather statement 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; radar from the NEXRAD Level II archive.