Alert archive / Wyoming / Special Weather Statements in 2013
Special Weather Statement, NWS Riverton, WY
NWS Riverton, WY issued this special weather statement at Jun 18, 2013, 2:21 PM MDT for Johnson County, Wyoming. It was in force for 39 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
- Jun 18, 2013, 2:21 PM MDT (20:21 UTC)
- Expired
- Jun 18, 2013, 3:00 PM MDT
- In force
- 39 min
- Issued by
- NWS Riverton, WY
County Johnson County, WY
The radar
The Riverton/Lander radar (KRIW), 207 km from the middle of the area, began a volume at 20:23 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 (KUNR), launched 12:00Z, 8.4 hours before the alert went out and 275 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
- 24 J/kg
- Mixed-layer CIN
- -337 J/kg
- Mixed-layer LCL
- 1258 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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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 Jun 18, 11:00 AM MDT, 3 hours 21 minutes earlier.
Area forecast discussion, Jun 18, 11:00 AM MDT, 3 hours 21 minutes before
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</html>Hazardous weather outlook, Jun 18, 5:00 AM MDT, 9 hours 21 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 500 AM MDT TUE JUN 18 2013 WYZ001>020-022>030-191100- 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- 500 AM MDT TUE JUN 18 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ALONG AND EAST OF THE DIVIDE COULD PRODUCE STRONG GUSTY WINDS THIS AFTERNOON AND EVENING...IN ADDITION TO DANGEROUS CLOUD TO GROUND LIGHTNING AND SMALL HAIL. SOME STORMS COULD BECOME STRONG IN NATRONA AND JOHNSON COUNTY LATE THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY WEDNESDAY AND THURSDAY...WARM...VERY DRY AND BREEZY/WINDY CONDITIONS ACROSS SOUTH AND CENTRAL WYOMING WILL INCREASE THE FIRE RISK. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT ANY SEVERE WEATHER. THANK YOU. TEAM RIVERTON
In the hours before
Special weather statement, Jun 18, 10:54 AM MDT, 3 hours 27 minutes before
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</html>Special weather statement, Jun 18, 1:55 PM MDT, 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 155 PM MDT TUE JUN 18 2013 WYZ009>011-182045- BIGHORN MOUNTAINS SOUTHEAST WY-NORTHEAST JOHNSON COUNTY WY-SOUTHEAST JOHNSON COUNTY WY- 155 PM MDT TUE JUN 18 2013 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL JOHNSON COUNTY UNTIL 245 PM MDT... AT 149 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR I25 MILE MARKER 290...OR 7 MILES SOUTH OF BUFFALO...MOVING NORTHEAST AT 15 MPH. TRAVELERS ON I90 AND I25 WILL BE AFFECTED BY THIS STORM. BE PREPARED FOR A SUDDEN CHANGE IN WEATHER CONDITIONS. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. THIS STORM WILL BE NEAR... I90 MILE MARKER 60 AROUND 200 PM MDT. I90 EXIT 65 AROUND 205 PM MDT. I90 EXIT 69 AROUND 210 PM MDT. I90 EXIT 73 AROUND 220 PM MDT. THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 289 AND 299. THIS INCLUDES INTERSTATE 90 IN WYOMING BETWEEN MILE MARKERS 49 AND 74. BRIEF HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED HIGHWAY OR ROADWAY. REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4449 10637 4420 10618 4412 10669 4435 10689 TIME...MOT...LOC 1953Z 244DEG 19KT 4425 10664 LYNOTT
Special weather statement, Jun 18, 2:01 PM MDT, 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 201 PM MDT TUE JUN 18 2013 WYZ002-003-005-007-182045- ABSAROKA MOUNTAINS WY-CODY FOOTHILLS WY-OWL CREEK AND BRIDGER MOUNTAINS WY-SOUTHWEST BIG HORN BASIN WY- 201 PM MDT TUE JUN 18 2013 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HOT SPRINGS AND SOUTHEASTERN PARK COUNTIES UNTIL 245 PM MDT... AT 157 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 11 MILES SOUTH OF STATE HWY 290 MILE MARKER 10... OR 17 MILES SOUTHWEST OF MEETEETSE...MOVING NORTHEAST AT 15 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. THIS STORM WILL BE NEAR... RURAL SOUTHEASTERN PARK COUNTY THROUGH 245 PM MDT RURAL NORTHWESTERN HOT SPRINGS COUNTY THROUGH 245 PM MDT RURAL NORTHERN HOT SPRINGS COUNTY THROUGH 245 PM MDT THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. BRIEF HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO POSSIBLE. REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4423 10906 4399 10865 4378 10891 4405 10933 TIME...MOT...LOC 2001Z 216DEG 14KT 4394 10900 LYNOTT
Special weather statement, Jun 18, 2:21 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 221 PM MDT TUE JUN 18 2013 WYZ010-011-182100- NORTHEAST JOHNSON COUNTY WY-SOUTHEAST JOHNSON COUNTY WY- 221 PM MDT TUE JUN 18 2013 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN JOHNSON COUNTY UNTIL 300 PM MDT... AT 215 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8 MILES NORTH OF FORT RENO HISTORICAL SITE...OR 24 MILES NORTHEAST OF KAYCEE...MOVING NORTHWEST AT 15 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 45 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. THIS STORM WILL BE NEAR... RURAL CENTRAL JOHNSON COUNTY THROUGH 300 PM MDT THIS INCLUDES INTERSTATE 90 IN WYOMING BETWEEN MILE MARKERS 78 AND 95. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. BRIEF HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4416 10661 4430 10602 4392 10603 4384 10636 TIME...MOT...LOC 2021Z 156DEG 12KT 4396 10630 BRANHAM
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 1:44 AM MDT | Fire Weather Watch | RIW | Fremont, Hot Springs, Johnson, Natrona, Washakie | 18 hr |
| Jun 18, 10:54 AM MDT | Special Weather Statement | RIW | Washakie | 51 min |
| Jun 18, 12:01 PM MDT | Special Weather Statement | RIW | Johnson | 44 min |
| Jun 18, 12:44 PM MDT | Special Weather Statement | RIW | Johnson | 61 min |
| Jun 18, 1:55 PM MDT | Special Weather Statement | RIW | Johnson | 50 min |
| Jun 18, 2:01 PM MDT | Special Weather Statement | RIW | Hot Springs | 44 min |
| Jun 18, 2:38 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 67 min |
| Jun 18, 3:22 PM MDT | Special Weather Statement | RIW | 53 min | |
| Jun 18, 4:14 PM MDT | Special Weather Statement | RIW | Teton | 46 min |
Nearby
Special Weather Statements in Wyoming, 2013Every special weather statement in 2013
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.