Alert archive / Wyoming / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 93, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 30, 2011, 3:19 PM MDT for Laramie County, Wyoming. It was in force for 41 min. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 30, 2011, 3:19 PM MDT (21:19 UTC)
- Expired
- Jun 30, 2011, 4:00 PM MDT
- In force
- 41 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 19 km from the middle of the area, began a volume at 21:20 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 30, 3:38 PM MDT | TSTM WND GST 54 | 4 W Cheyenne, WY | OBSERVED AT F.E. WARREN AFB. |
| Jun 30, 3:39 PM MDT | TSTM WND GST 57 | Cheyenne, WY | |
| Jun 30, 3:52 PM MDT | TSTM WND GST 60 | 10 N Cheyenne, WY | |
| Jun 30, 4:00 PM MDT | TSTM WND GST 56 | Whitaker, WY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 33 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 30, 12:18 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 9.3 hours before the alert went out and 210 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
- 2394 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
932
WUUS55 KCYS 302119
SVRCYS
WYC021-302200-
/O.NEW.KCYS.SV.W.0093.110630T2119Z-110630T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
319 PM MDT THU JUN 30 2011
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN LARAMIE COUNTY IN SOUTHEAST WYOMING...
* UNTIL 400 PM MDT
* AT 315 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED 9 MILES SOUTH OF CRYSTAL
LAKE RESERVOIR...OR 20 MILES WEST OF CHEYENNE...AND MOVING
NORTHEAST AT 35 MPH.
* LOCATIONS IMPACTED INCLUDE...
CHEYENNE...CRYSTAL LAKE RESERVOIR...WARREN AF BASE...FEDERAL...
NORTH CHEYENNE...WHITAKER.
THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILE MARKERS 339 AND
361.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4103 10528 4160 10498 4137 10442 4099 10502
4099 10519
TIME...MOT...LOC 2118Z 212DEG 41KT 4107 10512
WIND...HAIL 70MPH <.75IN
$$
HAHN2 follow-up statements
402 WWUS55 KCYS 302142 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 342 PM MDT THU JUN 30 2011 WYC021-302200- /O.CON.KCYS.SV.W.0093.000000T0000Z-110630T2200Z/ LARAMIE WY- 342 PM MDT THU JUN 30 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN LARAMIE COUNTY UNTIL 400 PM MDT... AT 338 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES WEST OF WARREN AF BASE...OR 9 MILES WEST OF CHEYENNE...MOVING NORTHEAST AT 40 MPH. IN ADDITION...AT 339 PM A 57 MPH GUST WAS RECORDED IN CHEYENNE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... NORTH CHEYENNE...WHITAKER...I-25 EXIT 13...I-25 EXIT 21...HWY 85 AT LODGEPOLE CREEK...I-25 EXIT 29...HWY 85 AT COUNTY ROAD 222...HWY 85 MM 32 AND I-25 EXIT 39. THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILE MARKERS 345 AND 360. THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 10 AND 9. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4104 10495 4111 10518 4160 10498 4137 10442 TIME...MOT...LOC 2142Z 217DEG 36KT 4122 10493 WIND...HAIL 60MPH <.75IN $$
275 WWUS55 KCYS 302200 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 400 PM MDT THU JUN 30 2011 WYC021-302209- /O.EXP.KCYS.SV.W.0093.000000T0000Z-110630T2200Z/ LARAMIE WY- 400 PM MDT THU JUN 30 2011 ...THE SEVERE THUNDERSTORM WARNING FOR WESTERN LARAMIE COUNTY WILL EXPIRE AT 400 PM MDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM. REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN LARAMIE COUNTY UNTIL 445 PM. LAT...LON 4104 10495 4111 10518 4160 10498 4137 10442 TIME...MOT...LOC 2159Z 217DEG 36KT 4136 10479 $$ HAHN
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 2:06 PM MDT, 1 hour 13 minutes earlier.
Area forecast discussion, Jun 30, 2:06 PM MDT, 1 hour 13 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHEYENNE WY 206 PM THU JUN 30 2011 .SHORT TERM...TONIGHT THROUGH SATURDAY... THUNDERSTORMS CONTINUE TO DEVELOP EARLY THIS AFTERNOON OVER THE SOUTHEAST PART OF WYOMING AND NORTHERN COLORADO. MANY OF THE STORMS WILL BECOME STRONG OR SEVERE THROUGH THE REST OF THE AFTERNOON AND EARLY TONIGHT AS THE ACTIVITY SPREAD EAST. MAIN THREAT FROM THE STORMS WILL BE STRONG WIND GUSTS...LARGE HAIL AND HEAVY RAINFALL. SO FAR TODAY TO THE WEST OF THE LARAMIE RANGE...SMALL HAIL...WIND GUSTS TO 40 MPH AND A PERIOD OF HEAVY RAIN HAS BEEN NOTED. DEEPER MOISTURE...GREATER INSTABILITY AND LARGER CAPE VALUES ARE OVER THE EAST PART OF THE CWA. THAT IS WHERE THE POTENTIAL FOR LARGER HAIL EXISTS. ALL OF THE ACTIVITY IS AHEAD OF A POTENT SHORTWAVE TROUGH CURRENTLY OVER EXTREME EAST CENTRAL UTAH. THAT FEATURE WILL MOVE ACROSS THE CWA TONIGHT. AHEAD OF THE SHORTWAVE TROUGH IS A 250 MB JET SEGMENT WHICH HAS BEEN AIDING STORM DEVELOPMENT OVER SOUTHEAST WYOMING. MODELS DIFFER WITH THE TIMING OF THE SHORTWAVE TROUGH WITH THE NAM BEING MUCH SLOWER. AT THIS TIME WILL FOLLOW MORE CLOSELY THE 00Z ECMWF TIMING WHICH MOVES THE FEATURE JUST EAST OF THE CWA AT 12Z FRIDAY. SHOWERS AND THUNDERSTORMS WILL CONTINUE AHEAD OF THE SHORTWAVE TROUGH TONIGHT. LOW CLOUDS AND WILL BE POSSIBLE LATER TONIGHT AND THROUGH MID MORNING FRIDAY OVER THE NORTHERN PANHANDLE WHERE THE SURFACE DEW POINTS WILL BE HIGHEST. AN ASSOCIATED SURFACE COLD FRONT WILL MOVE ACROSS THE CWA TONIGHT AND IS PRECEEDED BY A PRE FRONTAL TROUGH. BEHIND THE FRONT FOR FRIDAY WILL BE COOLER AND MORE STABLE AIR AS SURFACE HIGH PRESSURE BUILDS OVER THE REGION. FOR SATURDAY THE FLOW ALOFT IS MORE WESTERLY WITH A WEAK SHORTWAVE TROUGH MOVING ACROSS THE CWA. THE SURFACE HIGH WILL BE OVER THE PLAINS WITH SOUTHEAST RETURN FLOW INCREASING THE LOW LEVEL MOISTURE. PRECIPITABLE WATER VALUES INCREASE TO AN INCH OVER THE PANHANDLE ON SATURDAY. WILL INCREASE POPS FOR SATURDAY OVER MAINLY THE EASTERN PART OF THE CWA AND WARM TEMPERATURES. SPC HAS PLACED THE RISK OVER SEVERE OVER A NARROW PART OF SOUTHEAST WYOMING SATURDAY AFTERNOON AND LOOKS REASONABLE AT THIS TIME. .LONG TERM... LINGERING CONVECTION EXPECTED TO END SATURDAY EVENING WITH MAINLY DRY WEATHER EXPECTED SUNDAY AND MONDAY AS UPPER HIGH BUILDS OVER THE CWA WITH ASSOCIATED HEIGHT RISES. TEMPERATURES QUITE WARM SUNDAY AND INDEPENDENCE DAY WITH MAXS AROUND 100 POSSIBLE OVER THE PANHANDLE...ESPECIALLY MONDAY. INCREASE IN MOISTURE THEN EXPECTED OVER THE REGION BY MIDWEEK WHICH WILL BRING SOME MINOR COOLING AS WELL AS AN INCREASE IN MAINLY LATE DAY CONVECTION...BEGINNING TUESDAY THEN SOMEWHAT MORE SO WEDNESDAY AND THURSDAY. && .AVIATION...00Z TAF ISSUANCE... MAINLY VFR CONDITIONS EXPECTED TONIGHT THROUGH FRIDAY OUTSIDE OF SCTD TSRAS TONIGHT WHERE BRIEF MVFR CIGS/VSBYS POSSIBLE. BRIEF GUSTY SFC WINDS ALSO POSSIBLE VCTY ANY CBS. && .FIRE WEATHER... THUNDERSTORMS WILL AFFECT MOST OF THE CWA THROUGH TONIGHT WITH WETTING RAIN LIKELY. BEHIND THE COLD FRONT FOR FRIDAY WILL BE COOLER TEMPERATURES...A MUCH LOWER CHANCE OF LATE DAY STORMS AND GUSTY NORTHWEST OR NORTH WINDS. TEMPERATURES THEN WARM FOR THE WEEKEND AND MINIMUM RELATIVE HUMIDITY VALUES OVER THE LOWER ELEVATIONS DROP TO BETWEEN 15 AND 30 PERCENT. SOME LATE DAY THUNDERSTORMS WILL AFFECT THE EAST PART OF THE CWA SATURDAY. MID AND UPPER LEVEL MOISTURE RETURNS TO THE CWA MONDAY AND PERSISTS THROUGH THE MID PART OF NEXT WEEK. THE ADDITIONAL MOISUTRE WILL HELP TO PRODUCE LATE DAY SHOWERS AND THUDNERSTORMS. A COLD FRONT WILL MOVE ACROSS THE CWA MONDAY AFTERNOON AND MONDAY EVENING. && .HYDROLOGY... FLOOD WARNINGS REMAIN IN EFFECT FOR SARATOGA...SINCLAIR...HENRY AND MITCHELL ALONG THE NORTH PLATTE RIVER AS WELL AS THE LARAMIE RIVER NEAR LARAMIE AND THE ENCAMPMENT RIVER AT ENCAMPMENT. RIVER LEVELS WILL REMAIN STEADY OR SLOWLY FALL THROUGH EARLY NEXT WEEK ALONG THE LOWER NORTH PLATTE RIVER...WITH DIURNAL RISES AND FALLS MIXED IN WITH A GENERAL DECREASING TREND FURTHER WEST. VERY WARM TEMPERATURES ARE FORECAST OVER THE WEEKEND AND EARLY NEXT WEEK WHICH WILL RESULT IN INCREASED MOUNTAIN SNOW MELT. HOWEVER...WITH MOST OF THE SNOW PACK BELOW 9500 FEET MSL IN THE MOUNTAINS ALREADY MELTED... DO NOT ANTICIPATE ANY SIGNIFICANT RISES THIS WEEK. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...NONE. NE...NONE. && WEILAND/EMANUEL
Hazardous weather outlook, Jun 30, 12:32 PM MDT, 2 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1232 PM MDT THU JUN 30 2011 WYZ101>119-011045- CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY- NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY- SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE- LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY- 1232 PM MDT THU JUN 30 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING... SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS WILL CONTINUE TO DEVELOP AND MOVE TO THE NORTHEAST AND SPREAD OVER THE REST OF SOUTHEAST WYOMING BY MID AFTERNOON. SOME OF THE THUNDERSTORMS WILL PRODUCE HAIL TO ONE INCH IN DIAMETER...WIND GUSTS TO 60 MPH AND HEAVY RAINFALL. THE THUNDERSTORMS WILL END OVER SOUTHEAST WYOMING BY LATE THIS EVENING. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY ISOLATED STRONG STORMS MAY DEVELOP MAINLY NORTH OF A GLENDO TO TORRINGTON LINE ON FRIDAY. THERE IS ALSO A CHANCE OF THUNDERSTORMS ON SATURDAY AND EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE NEZ002-003-019>021-054-055-095-096-011045- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 1232 PM MDT THU JUN 30 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS MAY DEVELOP OR MOVE INTO THE NEBRASKA PANHANDLE BY LATE IN THE AFTERNOON. SOME OF THE STORMS MAY BECOME SEVERE WITH THE MAIN THREATS BEING WIND GUSTS TO 70 MPH...HAIL UP TO ONE AND ONE HALF INCHES IN DIAMETER AND HEAVY RAIN. THE STORMS WILL WEAKEN AND MOVE EAST OF THE PANHANDLE SHORTLY AFTER MIDNIGHT. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE WESTERN NEBRASKA PANHANDLE UNTIL 9 PM. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY ISOLATED STRONG STORMS MAY DEVELOP MAINLY NORTH OF A TORRINGTON TO ALLIANCE LINE ON FRIDAY. THERE IS ALSO A CHANCE OF THUNDERSTORMS ON SATURDAY AND EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE WEILAND
In the hours before
Local storm report, Jun 30, 1:33 PM MDT, 1 hour 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
133 PM MDT THU JUN 30 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0127 PM TSTM WND GST 6 WSW DOUGLAS 42.72N 105.50W
06/30/2011 M53 MPH CONVERSE WY TRAINED SPOTTER
&&
MWEILANDSpecial weather statement, Jun 30, 1:39 PM MDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 139 PM MDT THU JUN 30 2011 WYZ107-108-302030- EAST PLATTE COUNTY WY-GOSHEN COUNTY WY- 139 PM MDT THU JUN 30 2011 ...SIGNIFICANT WEATHER ADVISORY FOR EXTREME EASTERN PLATTE AND NORTH CENTRAL GOSHEN COUNTIES UNTIL 230 PM MDT... AT 134 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR FORT LARAMIE NATIONAL HISTORIC SITE...OR 19 MILES NORTHEAST OF WHEATLAND...MOVING NORTHEAST AT 25 MPH. HAIL UP TO A HALF INCH IN DIAMETER AND WIND GUSTS UP TO 55 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. THIS STORM WILL BE NEAR... FORT LARAMIE NATIONAL HISTORIC SITE AROUND 145 PM MDT. FORT LARAMIE AROUND 150 PM MDT. HWY 85 AT DRY RAWHIDE CREEK AROUND 220 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. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. JAMSKI
Local storm report, Jun 30, 2:03 PM MDT, 1 hour 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
203 PM MDT THU JUN 30 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 PM HAIL 2 E LINGLE 42.14N 104.31W
06/30/2011 E0.25 INCH GOSHEN WY TRAINED SPOTTER
LIGHT RAIN/WINDS
&&
BCHAPMANLocal storm report, Jun 30, 2:07 PM MDT, 1 hour 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
207 PM MDT THU JUN 30 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0205 PM HAIL 4 S JAY EM 42.41N 104.36W
06/30/2011 M0.25 INCH GOSHEN WY TRAINED SPOTTER
NOT MUCH HAIL. LOTS OF HVY RAIN.
&&
BCHAPMANLocal storm report, Jun 30, 2:22 PM MDT, 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
222 PM MDT THU JUN 30 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0140 PM TSTM WND GST 13 S GLEN 42.42N 103.58W
06/30/2011 M57 MPH SIOUX NE DEPT OF HIGHWAYS
0150 PM TSTM WND GST DOUGLAS 42.76N 105.39W
06/30/2011 M50 MPH CONVERSE WY ASOS
&&
BCHAPMANSpecial weather statement, Jun 30, 3:04 PM MDT, 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 304 PM MDT THU JUN 30 2011 WYZ116-117-302145- SOUTH LARAMIE RANGE WY-SOUTH LARAMIE RANGE FOOTHILLS WY- 304 PM MDT THU JUN 30 2011 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LARAMIE AND SOUTHEASTERN ALBANY COUNTIES UNTIL 400 PM MDT... AT 302 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG WINDS ASSOCIATED WITH A THUNDERSTORM NEAR VIRGINIA DALE...OR 29 MILES SOUTHEAST OF LARAMIE...MOVING NORTHEAST AT 30 MPH. WIND GUSTS OUT OF THE SOUTH OF UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... BUFORD... CRYSTAL LAKE RESERVOIR... GRANITE SPRINGS RESERVOIR... FEDERAL... THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILE MARKERS 330 AND 350. THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THIS AREA. 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. HAHN
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 6:20 PM MDT | Severe Thunderstorm Warning | CYS | Albany | 51 min |
| Jun 29, 6:45 PM MDT | Severe Thunderstorm Warning | CYS | Carbon | 38 min |
| Jun 29, 6:57 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Laramie | 37 min |
| Jun 30, 11:16 AM MDT | River Flood Warning | CYS | Carbon | 34 hr |
| Jun 30, 2:03 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Niobrara | 24 min |
| Jun 30, 3:58 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie | 47 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2011Every severe thunderstorm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.