Alert archive / Wyoming / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 29, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 10, 2006, 2:05 PM MDT for Laramie County, Wyoming. It was in force for 25 min. 2 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 10, 2006, 2:05 PM MDT (20:05 UTC)
- Expired
- Jun 10, 2006, 2:30 PM MDT
- In force
- 25 min
- Issued by
- NWS Cheyenne, WY
- Area
- Counties, with a storm outline in the text
County Laramie County, WY
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 10, 2:06 PM MDT | HAIL 1 | 8 S Cheyenne, WY | |
| Jun 10, 2:06 PM MDT | HAIL 1 | 8 S Cheyenne, 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 2 storm reports to this severe thunderstorm warning; the first came 1 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 10, 12:10 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 8.1 hours before the alert went out and 186 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
- 151 J/kg
- Mixed-layer CIN
- -295 J/kg
- Mixed-layer LCL
- 1233 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -108 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KCYS 102005 SVRCYS WYC021-102030- /O.NEW.KCYS.SV.W.0029.060610T2005Z-060610T2030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 205 PM MDT SAT JUN 10 2006 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL LARAMIE COUNTY IN SOUTHEAST WYOMING... THIS INCLUDES THE CITY OF CHEYENNE... * UNTIL 230 PM MDT * AT 201 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL. THIS STORM WAS LOCATED 6 MILES SOUTH OF CHEYENNE...AND MOVING EAST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... 6 MILES SOUTH OF I-80 MM 370 BY 230 PM MDT... LAT...LON 4117 10489 4101 10488 4102 10428 4128 10443 $$ GOERING
2 follow-up statements
000 WWUS55 KCYS 102013 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 213 PM MDT SAT JUN 10 2006 WYC021-102030- /O.CON.KCYS.SV.W.0029.000000T0000Z-060610T2030Z/ LARAMIE WY- 213 PM MDT SAT JUN 10 2006 ...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 230 PM MDT FOR SOUTH CENTRAL LARAMIE COUNTY... AT 213 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR SOUTH GREELEY HIGHWAY...OR ABOUT 6 MILES SOUTH OF CHEYENNE...MOVING EAST AT 15 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... 7 MILES SOUTH OF I-80 MILE MARKER 370 BY 230 PM MDT... AT 206 PM MDT...THIS SEVERE STORM PRODUCED QUARTER SIZE HAIL AT A LOCATION 8 MILES SOUTH OF CHEYENNE. IF YOU ARE IN THE PATH OF THIS STORM...SEEK SAFE SHELTER NOW. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM MDT SATURDAY EVENING FOR THE PANHANDLE OF NEBRASKA AND SOUTHEASTERN WYOMING. LAT...LON 4113 10485 4101 10488 4102 10428 4122 10433 $$ RUBIN
000 WWUS55 KCYS 102101 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 301 PM MDT SAT JUN 10 2006 WYC021-102110- /O.EXP.KCYS.SV.W.0029.000000T0000Z-060610T2030Z/ LARAMIE WY- 301 PM MDT SAT JUN 10 2006 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL LARAMIE COUNTY IN SOUTHEAST WYOMING EXPIRED AT 230 PM MDT... A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN LARAMIE COUNTY IN SOUTHEAST WYOMING UNTIL 315 PM MDT. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM MDT SATURDAY EVENING FOR THE PANHANDLE OF NEBRASKA AND SOUTHEASTERN WYOMING. LAT...LON 4117 10489 4101 10488 4102 10428 4128 10443 $$
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 10, 9:21 AM MDT, 4 hours 44 minutes earlier.
Area forecast discussion, Jun 10, 9:21 AM MDT, 4 hours 44 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHEYENNE WY 921 AM MDT SAT JUN 10 2006 .UPDATE...ONE SHORTWAVE TROUGH IS PUSHING THROUGH SE WY THIS MORNING WITH ANOTHER OVER SW WY. HAVE ADDED SOME MORNING TSTMS TO SOUTHERN NEBRASKA PANHANDLE AND TO CARBON...ALBANY AND CONVERSE COUNTIES IN WY TO COVER THINGS. JLH && .PREV DISCUSSION... (ISSUED 329 AM MDT SAT JUN 10 2006) SHORT TERM...THROUGH TONIGHT. MOIST SOUTHWESTERLY FLOW ALOFT WILL CONTINUE OVER THE AREA TODAY BEFORE VEERING TO MORE OF A WESTERLY COMPONENT TONIGHT. A WEAK SURFACE COLD FRONT HAS NUDGED SOUTHWESTWARD EARLY THIS MORNING AND IS THROUGH THE PLAINS OF SOUTHEAST WY. IT WILL LOSE MOST OF ITS PUSH TODAY AND WILL BECOME QUASISTATIONARY AS IT STALLS IN THE VICINITY OF THE LARAMIE RANGE. THE SURFACE BOUNDARY WILL SERVE AS A FOCUS FOR CONVECTION AS LOW LEVEL UPSLOPE FLOW NORTH AND EAST OF THE FRONT CONVERGES WITH SOUTHWESTERLY FLOW SOUTH AND WEST OF THE FRONT. FORECAST CONVECTIVE PARAMETERS APPEAR TO SUPPORT SOME SEVERE WEATHER THIS AFTERNOON UNTIL MID EVENING AS PROGGED SOUNDINGS INDICATE GOOD SPEED AND DIRECTIONAL WIND SHEAR AS WELL AS GOOD INSTABILITY. THE PRIMARY THREAT LATER TODAY APPEARS TO BE THE POSSIBILITY OF SEVERE HAIL. TEMPERATURES TODAY WILL BE CLOSER TO NORMAL...REACHING THE MID 70S TO LOWER 80S IN MOST AREAS OUTSIDE THE MOUNTAINS. SEVERE STORMS WILL REMAIN POSSIBLE UNTIL 03Z OR SO BEFORE LOSING INTENSITY AND AERIAL COVERAGE AS DRIER AIR WORKS IN FROM THE WEST. WILL LINGER CONVECTION UNTIL AROUND MIDNIGHT OR SO THEN GO DRY LATE TONIGHT. LONG TERM...HEIGHTS ALOFT START TO RISE OVER THE CWA ON SUNDAY WITH THE RIDGE AXIS OVER THE HIGH PLAINS THROUGH WEDNESDAY ON ALL MODELS. THE BOUNDARY LAYER UPSLOPE WIND FLOW WILL PERSIST THROUGH MONDAY...BEFORE A SURFACE LOW PRESSURE TROUGH MOVES EAST OF MUSCH OF THE CWA TUESDAY AND WEDNESDAY. SUNDAY AND MONDAY WILL SEE MORE AFTERNOON AND EVENING THUNDERSTORMS AND LATE NIGHT AND EARLY MORNING SHOWERS OVER ESPECIALLY THE EAST PART OF THE CWA. MOST PARAMETERS STILL INDICATE THE GOOD POSSIBILITY OF SEVERE STORMS IN THE EAST PART OF THE CWA. DRIER AIR MOVES OVER THE REGION FOR TUESDAY AND CONTINUES FOR WEDNESDAY AND WILL EITHER LOWER OR TAKE OUT POPS FOR THOSE DAYS. AFTER A STILL RELATIVELY COOL DAY ON SUNDAY...THE TEMPERATURES WILL THEN WARM EACH DAY THROUGH WEDNESDAY. DRIER AND WARMER AIR AND BREEZY CONDITIONS ON TUESDAY AND WEDNESDAY OVER SOUTH CENTRAL WYOMING MAY CREATE A CRITICAL FIRE WEATHER SITUATION. LOW CLOUDS WILL CONTINUE TO BE A POSSIBILITY OVER THE EAST PART OF THE CWA IN THE LATE NIGHT AND EARLY MORNING HOURS IN THE MOIST BOUNDARY LAYER UPSLOPE WIND FLOW. REMAINDER OF THE FORECAST IS HANDLED DIFFERENTLY BY THE MODELS WITH THE MODELS NOW MORE PROGRESSIVE WITH THE LARGE AMPLITUDE UPPER LEVEL TROUGH LATER IN THE WEEK. THE 18Z DGEX IS THE FASTER IN MOVING THE FILLING FEATURE EAST WITH THE TROUGH PASSAGE OVER THE CWA AROUND 12Z THURSDAY. THE GFS MEANWHILE...ALSO TRENDING FASTER...HAS THE TROUGH PASSAGE AROUND 06Z FRIDAY. THE ASSOCIATED SURFACE COLD FRONT MOVES THROUGH AT SIMILAR TIMES. MODELS THEN HAVE A MORE ZONAL FLOW OVER THE WESTERN U.S. FOR NEXT WEEEKND. WILL COMPROMISE THE TIMING BETWEEN THE GFS AND DGEX AND MOVE THE COOLER AIR OVER THE CWA THURSDAY EVENING. THE HIGHEST POPS WILL PROBABLY BE AHEAD OF SHORTWAVE TROUGH THURSDAY AFTERNOON AND EVENING AND THEN LOWER THROUGH THE WEEKEND AS THE ATMOSPHERE DRIES. THE TEMPERATURES WILL ALSO TURN COOLER ON FRIDAY AND SATURDAY. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...NONE. NE...NONE. && SHORT TERM...ROBINSON LONG TERM....WEILAND
Hazardous weather outlook, Jun 10, 9:58 AM MDT, 4 hours 7 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1000 MDT SAT JUN 10 2006 NEZ001>003-019>021-054-055-WYZ059-060-067>070-111100- SIOUX-DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL- CHEYENNE-CONVERSE-NIOBRARA-PLATTE-GOSHEN-CHEYENNE FOOTHILLS- PINE BLUFFS- 1000 MDT SAT JUN 10 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE AREA EARLY THIS AFTERNOON AS A DISTURBANCE MOVES ACROSS SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE. A VERY MOIST AND UNSTABLE ATMOSPHERE WILL RESULT IN SOME SEVERE STORMS ACROSS THE AREA...EAST OF THE LARAMIE RANGE. THE MAIN THREAT WITH THE STORMS WILL BE LARGE HAIL AND HEAVY RAIN. THE STORMS WILL MOVE EAST OF THE NEBRASKA PANHANDLE EARLY THIS EVENING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THUNDERSTORMS WILL BE OVER MUCH OF SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE SUNDAY AND MONDAY AFTERNOON. THE STORMS WILL BE LESS NUMEROUS TUESDAY THROUGH FRIDAY... ESPECIALLY ON TUESDAY AND WEDNESDAY. SOME OF THE STORMS SUNDAY AFTERNOON AND EVENING WILL PRODUCE SEVERE WEATHER. THE SEVERE DROUGHT CONTINUES OVER THE SOUTHERN NEBRASKA PANHANDLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON INTO THE EARLY EVENING. WYZ061>066-111100- SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE-NORTH LARAMIE RANGE- LARAMIE VALLEY-LARAMIE RANGE- 1000 MDT SAT JUN 10 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT A SCATTERED COVERAGE OF THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS THE AREA THROUGH THIS AFTERNOON. THE THUNDERSTORMS ARE NOT EXPECTED TO BECOME SEVERE...BUT BRIEF AND LOCAL WIND GUSTS TO 40 MPH AND LIGHTNING ARE POSSIBLE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ISOLATED THUNDERSTORMS WILL DEVELOP SUNDAY AND MONDAY AFTERNOON AND EVENING...WITH GENERALLY DRY CONDITIONS BY TUESDAY. WARM AND DRY CONDITIONS AND INCREASING SOUTHWEST WINDS MAY CREATE CRITICAL FIRE WEATHER CONDITIONS TUESDAY THROUGH THURSDAY OVER THE LOWER ELEVATIONS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. WEILAND
In the hours before
Local storm report, Jun 10, 1:00 PM MDT, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
100 PM MDT SAT JUN 10 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1226 PM HAIL 3 SW YODER 41.89N 104.34W
06/10/2006 M0.88 INCH GOSHEN WY TRAINED SPOTTER
LIGHT TO MODERSTE RAIN...DIME TO NICKEL SIZE HAIL
1222 PM HAIL 9 NW HAWK SPRINGS 41.88N 104.39W
06/10/2006 M0.75 INCH GOSHEN WY TRAINED SPOTTER
DIME TO PENNY SIZE HAIL
&&
JHOUSELocal storm report, Jun 10, 2:05 PM MDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE CHEYENNE WY
205 PM MDT SAT JUN 10 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1222 PM HAIL 9 NW HAWK SPRINGS 41.88N 104.39W
06/10/2006 M0.75 INCH GOSHEN WY TRAINED SPOTTER
DIME TO PENNY SIZE HAIL
1226 PM HAIL 3 SW YODER 41.89N 104.34W
06/10/2006 M0.88 INCH GOSHEN WY TRAINED SPOTTER
LIGHT TO MODERSTE RAIN...DIME TO NICKEL SIZE HAIL
0115 PM HAIL MITCHELL 41.94N 103.81W
06/10/2006 M0.88 INCH SCOTTS BLUFF NE TRAINED SPOTTER
0138 PM HAIL 2 NW SCOTTSBLUFF 41.89N 103.69W
06/10/2006 M1.25 INCH SCOTTS BLUFF NE TRAINED SPOTTER
0148 PM HAIL MINATARE 41.81N 103.50W
06/10/2006 M1.75 INCH SCOTTS BLUFF NE LAW ENFORCEMENT
&&
JHOUSEThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 6:39 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 44 min |
| Jun 10, 12:01 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 29 min |
| Jun 10, 2:30 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 37 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2006Every severe thunderstorm warning in 2006
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.