Alert archive / California / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 7, NWS Reno, NV
NWS Reno, NV issued this severe thunderstorm warning at Aug 15, 2012, 4:47 PM PDT for Nevada County, California. It was in force for 43 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
- Aug 15, 2012, 4:47 PM PDT (23:47 UTC)
- Expired
- Aug 15, 2012, 5:30 PM PDT
- In force
- 43 min
- Issued by
- NWS Reno, NV
- Area
- Storm-based polygon
County Nevada County, CA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 15, 5:00 PM PDT | HAIL 0.88 | 3 S Boca Reservoir, CA | ACCUMULATION OF SMALL HAIL ON ROADS. LARGEST HAIL ESTIMATED ABOUT THE SIZE OF NICKELS. HEAVY RAINFALL AND RUNOFF. NEAR GLENSHIRE DRIVE. |
| Aug 15, 5:10 PM PDT | HAIL 0.5 | 3 S Boca Reservoir, CA | THUNDERSTORM WITH PEA TO MARBLE SIZE HAIL NOW STICKING TO PAYMENT. 1.25 INCHES RAIN REPORTED WITHIN 35 MINUTES FROM 435 PM TO 505 PM. WATER RUNNING DOWN LOCAL STREETS IN GLENSHIRE AREA OF TRUCKEE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Reno, NV (KREV), launched 12:00Z, 11.8 hours before the alert went out and 165 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
- 2583 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
034 WUUS55 KREV 152347 SVRREV CAC057-160030- /O.NEW.KREV.SV.W.0007.120815T2347Z-120816T0030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RENO NV 447 PM PDT WED AUG 15 2012 THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL NEVADA COUNTY IN CENTRAL CALIFORNIA... THIS INCLUDES BOCA RESERVOIR...GLENSHIRE-DEVONSHIRE...AND HIRSCHDALE... * UNTIL 530 PM PDT * AT 441 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR HIRSCHDALE...OR 4 MILES SOUTH OF BOCA RESERVOIR. THIS STORM WAS NEARLY STATIONARY. * LOCATIONS AFFECTED INCLUDE...BOCA RESERVOIR AND HIRSCHDALE. THIS STORM IS CAPABLE OF PRODUCING HEAVY RAINFALL. WATCH FOR PONDING OF WATER ON ROADS. DRIVERS SHOULD SLOW DOWN IF ENCOUNTERING HEAVY RAIN TO AVOID HYDROPLANING...AND REMEMBER TO TURN ON THEIR HEADLIGHTS. LAT...LON 3940 12016 3940 12001 3932 12001 3932 12017 TIME...MOT...LOC 2346Z 117DEG 2KT 3934 12008 $$ HOON
3 follow-up statements
111 WUUS55 KREV 152350 CCA SVRREV CAC057-160030- /O.COR.KREV.SV.W.0007.120815T2347Z-120816T0030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED NATIONAL WEATHER SERVICE RENO NV 447 PM PDT WED AUG 15 2012 THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL NEVADA COUNTY IN CENTRAL CALIFORNIA... THIS INCLUDES INTERSTATE 80 NEAR HIRSCHDALE...BOCA RESERVOIR... AND GLENSHIRE-DEVONSHIRE. * UNTIL 530 PM PDT * AT 441 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR INTERSTATE 80 NEAR HIRSCHDALE...OR 4 MILES SOUTH OF BOCA RESERVOIR. THIS STORM WAS NEARLY STATIONARY. * LOCATIONS AFFECTED INCLUDE...BOCA RESERVOIR AND HIRSCHDALE. THIS STORM IS CAPABLE OF PRODUCING HEAVY RAINFALL. WATCH FOR PONDING OF WATER ON ROADS...ESPECIALLY INTERSTATE 80. DRIVERS SHOULD SLOW DOWN IF ENCOUNTERING HEAVY RAIN TO AVOID HYDROPLANING...AND REMEMBER TO TURN ON THEIR HEADLIGHTS. LAT...LON 3940 12016 3940 12001 3932 12001 3932 12017 TIME...MOT...LOC 2346Z 117DEG 2KT 3934 12008 $$ HOON
279 WWUS55 KREV 160001 SVSREV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RENO NV 501 PM PDT WED AUG 15 2012 CAC057-160030- /O.CON.KREV.SV.W.0007.000000T0000Z-120816T0030Z/ NEVADA CA- 501 PM PDT WED AUG 15 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM PDT FOR EAST CENTRAL NEVADA COUNTY... AT 458 PM PDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR GLENSHIRE-DEVONSHIRE...OR 4 MILES SOUTH OF BOCA RESERVOIR. THIS STORM WAS NEARLY STATIONARY. * LOCATIONS AFFECTED INCLUDE...INTERSTATE 80 NEAR BOCA RESERVOIR... GLENSHIRE-DEVONSHIRE...HIRSCHDALE...TRUCKEE-TAHOE AIRPORT...ALPINE MEADOWS CAMPGROUND AND BOCA CAMPGROUND. THIS STORM IS PRODUCING HEAVY RAINFALL. WATCH FOR PONDING OF WATER ON ROADS. DRIVERS SHOULD SLOW DOWN WHEN ENCOUNTERING HEAVY RAIN TO AVOID HYDROPLANING...AND REMEMBER TO TURN ON THEIR HEADLIGHTS. HAIL UP TO ONE INCH IN DIAMETER AND HEAVY RAINFALL OF UP TO TWO-THIRDS OF AN INCH IN 20 MINUTES WAS RECENTLY REPORTED IN GLENSHIRE-DEVONSHIRE. SEEK SAFE SHELTER AND STAY AWAY FROM WINDOWS! LAT...LON 3940 12016 3940 12001 3932 12001 3932 12017 TIME...MOT...LOC 2359Z 117DEG 2KT 3934 12009 $$ HOON
722 WWUS55 KREV 160028 SVSREV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RENO NV 528 PM PDT WED AUG 15 2012 CAC057-160037- /O.EXP.KREV.SV.W.0007.000000T0000Z-120816T0030Z/ NEVADA CA- 528 PM PDT WED AUG 15 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL NEVADA COUNTY WILL EXPIRE AT 530 PM PDT... THE STORMS THAT EARLIER PROMPTED THE SEVERE THUNDERSTORM WARNING HAVE WEAKENED...THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER...STRONG THUNDERSTORMS WILL REMAIN IN THE AREA THROUGH 630 PM THIS EVENING...CAPABLE OF PRODUCING GUSTY WINDS...DEADLY LIGHTNING...AND HEAVY RAINS. LAT...LON 3940 12016 3940 12001 3932 12001 3932 12017 TIME...MOT...LOC 0027Z 117DEG 2KT 3935 12011 $$ HOON
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 3:31 PM PDT | Areal Flood Advisory | REV | Sierra | 119 min |
Nearby
Severe Thunderstorm Warnings in California, 2012Every severe thunderstorm warning in 2012
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.