Alert archive / California / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 34, NWS Reno, NV
NWS Reno, NV issued this severe thunderstorm warning at Aug 28, 2007, 3:13 PM PDT for Mono County, California. It was in force for 30 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
- Aug 28, 2007, 3:13 PM PDT (22:13 UTC)
- Expired
- Aug 28, 2007, 3:43 PM PDT
- In force
- 30 min
- Issued by
- NWS Reno, NV
- Area
- Counties, with a storm outline in the text
County Mono County, CA
The radar
The Reno radar (KRGX), 179 km from the middle of the area, began a volume at 22:14 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
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 nearest sounding before it
Reno, NV (KREV), launched 12:00Z, 10.2 hours before the alert went out and 182 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
- 2866 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KREV 282214 SVRREV CAC051-282300- /O.NEW.KREV.SV.W.0034.070828T2213Z-070828T2300Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RENO NV 313 PM PDT TUE AUG 28 2007 THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL MONO COUNTY IN CENTRAL CALIFORNIA... THIS INCLUDES THE CITIES OF...BRIDGEPORT...TWIN LAKES... * UNTIL 400 PM PDT * AT 310 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL. THIS STORM WAS LOCATED NEAR THE INTERSECTION OF BODIE ROAD AND HIGHWAY 395...OR ABOUT 7 MILES SOUTHEAST OF BRIDGEPORT. THIS STORM WAS NEARLY STATIONARY. * THE SEVERE THUNDERSTORM WILL BE NEAR... 6 MILES SOUTH OF BRIDGEPORT AND 7 MILES EAST OF TWIN LAKES BY 400 PM PDT... THIS STORM IS CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL. WATCH FOR PONDING WATER ON AREA ROADWAYS AND MINOR ROCK SLIDES IN STEEP TERRAIN. DRIVERS SHOULD SLOW DOWN IF ENCOUNTERING HEAVY RAINS...AND REMEMBER TO TURN ON THEIR HEADLIGHTS. LAT...LON 3809 11941 3833 11932 3822 11902 3805 11909 TIME...MOT...LOC 2213Z 107DEG 3KT 3816 11917 $$ HOON
1 follow-up statement
000 WWUS55 KREV 282243 SVSREV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RENO NV 343 PM PDT TUE AUG 28 2007 CAC051-282253- /O.CAN.KREV.SV.W.0034.000000T0000Z-070828T2300Z/ MONO CA- 343 PM PDT TUE AUG 28 2007 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MONO COUNTY IS CANCELLED... THE STORMS THAT EARLIER PROMPTED THE SEVERE THUNDERSTORM WARNING HAVE WEAKENED...THEREFORE THE WARNING WILL BE CANCELLED. HOWEVER...STRONG THUNDERSTORMS WILL REMAIN IN THE AREA THROUGH 400 PM... CAPABLE OF PRODUCING GUSTY WINDS...DEADLY LIGHTNING...AND BRIEF HEAVY RAINS. LAT...LON 3809 11941 3833 11932 3822 11902 3805 11909 TIME...MOT...LOC 2243Z 107DEG 3KT 3817 11920 $$ HOON
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 Reno, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 28, 2:36 PM PDT, 37 minutes earlier.
Area forecast discussion, Aug 28, 2:36 PM PDT, 37 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RENO NV 236 PM PDT TUES AUG 28 2007 .SHORT TERM... WEAK UPPER DISTURBANCE OVER CENTRAL CA IS SLOWLY PUSHING NORTH OVER THE CENTRAL SIERRA THIS AFTERNOON. THIS LITTLE VORT MAX IS PROVIDING SOME ENHANCED LIFT OVER THE SOUTHERN PORTIONS OF THE CWA...CAUSING SCATTERED THUNDERSTORMS AND SHOWERS THAT WILL CONTINUE THROUGH THE REST OF THE AFTERNOON AND INTO THIS EVENING. WITH HIGH PW VALUES PUSHING UP FROM SOUTHERN NV...AS WELL AS VERY LITTLE STORM MOVEMENT...THESE STORMS WILL PRODUCE SOME MEASURABLE PRECIP. THE STRONGEST STORMS WILL PRODUCE LOCALLY HEAVY RAINFALL AND A VERY SLIGHT POSSIBILITY FOR FLASH FLOODING. SO FAR...THE STRONGEST STORMS HAVE REMAINED TO THE WEST OF THE SIERRA CREST. MOST OF THE CONVECTIVE ACTIVITY WILL END THIS EVENING AS WE LOSE DAYTIME HEATING...BUT THERE IS A POSSIBILITY OF ISOLATED SHOWERS AND THUNDERSTORMS OVERNIGHT WITH THE VORT MAX PROVIDING SOME ELEVATED CONVECTION...MAINLY ALONG THE SIERRA CREST AND PUSHING UP INTO THE TAHOE AND LASSEN ZONES BY WEDNESDAY MORNING. WE SAW SOME NOCTURNAL CONVECTION FROM THIS WAVE LAST NIGHT OVER THE SOUTHERN SIERRA...SO IT IS DEFINITELY NOT OUT OF THE QUESTION TONIGHT IN OUR AREA. WEDNESDAY...CONVECTIVE FOCUS WILL SHIFT NORTHWARD TO THE NORTHERN LASSEN-NORTHERN WASHOE CONVERGENCE AREA NORTH OF RENO AND TRUCKEE. SHORTWAVE RIDGING BEHIND THE LITTLE WAVE SHOULD INHIBIT ANY CONVECTION AROUND RENO-TAHOE. WEAK INSTABILITY ACROSS MONO-MINERAL COUNTIES WILL CAUSE SOME ISOLATED CELLS TO DEVELOP IN THE AFTERNOON AND EARLY EVENING. THURSDAY IS LOOKING LIKE PRETTY GOOD DAY FOR CONVECTION AROUND THE REGION. WEAK JET MAX/SHORTWAVE WILL BE MOVING INTO THE AREA WITH GOOD DIFFLUENCE AND STEEPER LAPSE RATES ALOFT. MOISTURE WILL CONTINUE TO PUSH UP INTO THE AREA...WITH PW VALUES JUMPING UP TO ANYWHERE FROM 3/4-1. BETTER SHEAR ALOFT WILL MAY HELP TO GET ANY STORMS THAT DO FIRE TO ORGANIZE BETTER THAN WE HAVE SEEN THE LAST COUPLE DAYS. THE MAIN CONCERN FOR ME IS THE SOUTHWEST FLOW ALOFT THAT HAS A TENDENCY TO INHIBIT CONVECTION...ESPECIALLY OVER THE LEE OF THE SIERRA. FOR NOW...WILL CONTINUE TO LEAVE SLIGHT CHANCES ACROSS THE ENTIRE CWA FOR THURSDAY AFTERNOON WITH CONVECTIVE FOCUS SHIFTING EASTWARD THROUGH THE DAY. TEMPERATURES WILL CONTINUE TO REMAIN WELL ABOVE NORMAL FOR THIS TIME OF YEAR. WE WILL APPROACH THE UPPER 90S IN THE DESERT VALLEYS ON WEDNESDAY AND THURSDAY...REMAINING JUST A FEW DEGREES BELOW RECORDS. WITH INCREASED CLOUD COVER OVER THE REGION THE NEXT COUPLE DAYS...LOW TEMPS WILL REMAIN IN THE HIGH 60S...EVEN 70S IN THE WESTERN NV VALLEYS. HOON .LONG TERM...SATURDAY THROUGH TUESDAY... BY SATURDAY THE PERSISTENT RIDGE THAT HAS BEEN OVER THE SWRN CONUS SHOULD START TO FLATTEN IN RESPONSE TO A SERIES OF SHORTWAVES MOVING THROUGH THE NRN TIER. THE RIDGE IS PROGGED TO BE CENTERED OVER THE COLORADO RIVER BASIN ON BOTH SATURDAY AND SUNDAY WITH LIGHT SWLY FLOW OVER THE NRN SIERRA AND NWRN NEVADA. THE RIDGE IS PROGGED TO BUILD SLIGHTLY TO THE WEST ON MONDAY AS A VORT MAX MOVES INTO THE PACIFIC NW. THIS WILL TURN OUR FLOW TO MORE WLY BUT THE UPR FLOW SHOULD STILL BE LIGHT WITH THE MAIN DYNAMICS STAYING WELL TO OUR NORTH. A STRONGER VORT MAX IS THEN PROGGED TO APPROACH ORE/WA ON TUESDAY. THIS STRENGTHENING SYSTEM WILL PUSH COLDER AIR TO THE SOUTH WITH LOWERING HEIGHTS. THE PRESSURE GRADIENT OVER OUR NWRN ZONES WILL ALSO TIGHTEN. CONDITIONS SHOULD REMAIN DRY THROUGH THE EXTENDED. THE ONLY CHANGE WILL BE TOWARD TUESDAY AS THE DEEPENING UPPER LOW MOVES TOWARD THE PACIFIC NW. COOLER AIR MOVING IN SHOULD DROP TEMPERATURES A DEGREE OR TWO ON TUESDAY. WIND SPEEDS SHOULD ALSO INCREASE SOMEWHAT AS THE GRADIENT TIGHTENS. TEMPERATURES WILL CONTINUE AROUND 10 DEGREES ABOVE NORMAL SATURDAY THROUGH TUESDAY. OHARA && .AVIATION... VFR CONDITIONS WILL CONTINUE THROUGH WEDNESDAY. ISOLD TSTMS CAN BE EXPECTED FROM 20Z THRU 03Z SOUTH OF A LINE FROM KTVL TO KNFL. ON WEDNESDAY TSTM COVERAGE SHOULD EXPAND AND EXTEND TO THE NE ACROSS ERN CHURCHILL AND PERSHING COUNTIES. OHARA && .REV WATCHES/WARNINGS/ADVISORIES... NV...NONE. CA...NONE. && HTTP://WEATHER.GOV/RENO
In the hours before
Special weather statement, Aug 28, 3:09 PM PDT, 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RENO NV 309 PM PDT TUE AUG 28 2007 CAZ073-282300- MONO- 309 PM PDT TUE AUG 28 2007 ...STRONG STORM JUST WEST OF BODIE STATE PARK... AT 306 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR CONWAY SUMMIT...OR 8 MILES SOUTHEAST OF BRIDGEPORT...AND MOVING SOUTHWEST AT 5 MPH. OCCASIONAL LIGHTNING...HEAVY RAIN WITH RAINFALL AMOUNTS OF AROUND ONE INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN ONE MILE...SMALL PEA OR MARBLE SIZE HAIL...AND GUSTY WINDS OF AROUND 30 TO 40 MPH... ARE EXPECTED WITH THIS STORM. THIS STORM WILL BE... NEAR JUNCTION US 395 AND CA 270 (BODIE RD) BY 315 PM PDT. NEAR JUNCTION US 395 AND CA 270 (BODIE RD) BY 320 PM PDT. NEAR CONWAY SUMMIT BY 325 PM PDT. NEAR JUNCTION US 395 AND CA 167 BY 330 PM PDT. NEAR TWIN LAKES BY 400 PM PDT. HEAVY RAINFALL IS OCCURRING WITH THIS STORM. EXPECT PONDING OF WATER ON LOCAL ROADWAYS. IN AREAS OF STEEP TERRAIN...MINOR ROCK SLIDES ARE POSSIBLE...ESPECIALLY ALONG BODIE ROAD BETWEEN HIGHWAY 395 AND BODIE STATE PARK. DRIVERS SHOULD SLOW DOWN AND TURN ON THEIR HEADLIGHTS IF ENCOUNTERING HEAVY RAINS. IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER INDOORS AND STAY AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS RADIO... WEATHER.GOV/RENO ON THE INTERNET...OR LOCAL MEDIA FOR LATER UPDATES AND POSSIBLE WARNINGS. HOON
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 4:15 PM PDT | Flash Flood Warning | REV | Nevada | 2 hr |
| Aug 28, 4:15 PM PDT | Flash Flood Warning | REV | Placer | 2 hr |
Nearby
Severe Thunderstorm Warnings in California, 2007Every severe thunderstorm warning in 2007
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.