Alert archive / Nevada / Flash Flood Watches in 2011
Flash Flood Watch 2, NWS Reno, NV
NWS Reno, NV issued this flash flood watch at Jul 30, 2011, 2:55 AM PDT for Mono County, California; Lyon County, Mineral County, Nevada. It took effect at Jul 30, 2011, 1:00 PM PDT. It was in force for 28 hr.
The area
The counties it named.
The facts
- Issued
- Jul 30, 2011, 2:55 AM PDT (09:55 UTC)
- In effect from
- Jul 30, 2011, 1:00 PM PDT
- Expired
- Jul 31, 2011, 4:58 PM PDT
- In force
- 28 hr
- Issued by
- NWS Reno, NV
- Flood severity
- None
Counties Mono County, CA, Lyon County, NV, Mineral County, NV
The radar
The Reno radar (KRGX), 150 km from the middle of the area, began a volume at 09:55 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
Reno, NV (KREV), launched 00:00Z, 9.9 hours before the alert went out and 131 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
- 19 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 3922 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- -27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
111 WGUS65 KREV 300955 FFAREV URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE RENO NV 255 AM PDT SAT JUL 30 2011 .MONSOON MOISTURE WILL CONTINUE TO PUSH NORTH AND NORTHWEST INTO EASTERN CALIFORNIA AND THE SIERRA TODAY. WEAK FLOW ALOFT WILL RESULT IN SLOW MOVEMENT OF ANY THUNDERSTORMS THAT DEVELOP. THIS SLOW MOVEMENT COMBINED WITH FAIRLY DEEP MOISTURE COULD LEAD TO AREAS OF VERY HEAVY RAIN AND THE POTENTIAL FOR FLASH FLOODING ACROSS PARTS OF MONO COUNTY THIS AFTERNOON AND EVENING. CAZ073-302300- /O.NEW.KREV.FF.A.0002.110730T2000Z-110731T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MONO- INCLUDING THE CITIES OF...BRIDGEPORT...MAMMOTH LAKES 255 AM PDT SAT JUL 30 2011 ...FLASH FLOOD WATCH IN EFFECT FROM 1 PM PDT THIS AFTERNOON THROUGH THIS EVENING FOR MONO COUNTY... THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF EAST CENTRAL CALIFORNIA... INCLUDING THE FOLLOWING AREA...MONO. * FROM 1 PM PDT THIS AFTERNOON THROUGH THIS EVENING * SLOW MOVING THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL THIS AFTERNOON AND EVENING. INCREASED POTENTIAL FOR HEAVY DOWNPOURS COULD CAUSE LOCALIZED FLASH FLOODING IN SOME AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT FLOODING OF SMALL STREAMS...CREEKS AND OTHER DRAINAGE AREAS IS POSSIBLE WITHIN THE WATCH AREA. PEOPLE IN THE WATCH AREA SHOULD MONITOR WEATHER.GOV/RENO FOR UPDATES AND BE PREPARED FOR IMMEDIATE ACTION SHOULD HEAVY RAINS AND FLOODING OCCUR OR A FLASH FLOOD WARNING BE ISSUED. && $$ HTTP://WEATHER.GOV/RENO
5 follow-up statements
166 WGUS65 KREV 302057 FFAREV URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE RENO NV 157 PM PDT SAT JUL 30 2011 .MONSOON MOISTURE WILL CONTINUE TO PUSH NORTH AND NORTHWEST INTO THE SOUTHERN SIERRA AND WESTERN NEVADA. WEAK FLOW ALOFT WILL RESULT IN SLOW MOVEMENT OF ANY THUNDERSTORMS THAT DEVELOP. THIS SLOW MOVEMENT COMBINED WITH FAIRLY DEEP MOISTURE COULD LEAD TO AREAS OF VERY HEAVY RAIN AND THE POTENTIAL FOR FLASH FLOODING ACROSS PARTS OF MONO...MINERAL...AND SOUTHERN LYON COUNTIES THIS AFTERNOON AND EVENING. HEAVY RAINFALL IS ONCE AGAIN EXPECTED SUNDAY FROM SLOW MOVING THUNDERSTORMS ACROSS THE SAME AREAS CONTINUING THE FLASH FLOOD POTENTIAL. NVZ001-311200- /O.EXB.KREV.FF.A.0002.000000T0000Z-110801T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MINERAL AND SOUTHERN LYON COUNTIES- INCLUDING THE CITIES OF...HAWTHORNE...YERINGTON...SMITH VALLEY 157 PM PDT SAT JUL 30 2011 ...FLASH FLOOD WATCH IN EFFECT THROUGH SUNDAY EVENING... THE NATIONAL WEATHER SERVICE IN RENO HAS EXPANDED THE * FLASH FLOOD WATCH TO INCLUDE A PORTION OF WESTERN NEVADA... INCLUDING THE FOLLOWING AREA...MINERAL AND SOUTHERN LYON COUNTIES. * THROUGH SUNDAY EVENING. * SLOW MOVING THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL THIS AFTERNOON AND EVENING. INCREASED POTENTIAL FOR HEAVY DOWNPOURS COULD CAUSE LOCALIZED FLASH FLOODING IN SOME AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT FLOODING OF SMALL STREAMS...CREEKS AND OTHER DRAINAGE AREAS IS POSSIBLE WITHIN THE WATCH AREA. PEOPLE IN THE WATCH AREA SHOULD MONITOR WEATHER.GOV/RENO FOR UPDATES AND BE PREPARED FOR IMMEDIATE ACTION SHOULD HEAVY RAINS AND FLOODING OCCUR OR A FLASH FLOOD WARNING BE ISSUED. && $$ CAZ073-311200- /O.EXT.KREV.FF.A.0002.000000T0000Z-110801T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MONO- INCLUDING THE CITIES OF...BRIDGEPORT...MAMMOTH LAKES 157 PM PDT SAT JUL 30 2011 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH SUNDAY EVENING... THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR * A PORTION OF EAST CENTRAL CALIFORNIA...INCLUDING THE FOLLOWING AREA...MONO. * THROUGH SUNDAY EVENING * SLOW MOVING THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL THIS AFTERNOON AND EVENING. INCREASED POTENTIAL FOR HEAVY DOWNPOURS COULD CAUSE LOCALIZED FLASH FLOODING IN SOME AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT FLOODING OF SMALL STREAMS...CREEKS AND OTHER DRAINAGE AREAS IS POSSIBLE WITHIN THE WATCH AREA. PEOPLE IN THE WATCH AREA SHOULD MONITOR WEATHER.GOV/RENO FOR UPDATES AND BE PREPARED FOR IMMEDIATE ACTION SHOULD HEAVY RAINS AND FLOODING OCCUR OR A FLASH FLOOD WARNING BE ISSUED. && $$ HTTP://WEATHER.GOV/RENO
178 WGUS65 KREV 310507 FFAREV FLOOD WATCH NATIONAL WEATHER SERVICE RENO NV 1007 PM PDT SAT JUL 30 2011 .MONSOON MOISTURE WILL CONTINUE TO PUSH NORTH AND NORTHWEST INTO THE SOUTHERN SIERRA AND WESTERN NEVADA. WEAK FLOW ALOFT WILL RESULT IN SLOW MOVEMENT OF ANY THUNDERSTORMS THAT DEVELOP. THIS SLOW MOVEMENT COMBINED WITH FAIRLY DEEP MOISTURE COULD LEAD TO AREAS OF VERY HEAVY RAIN AND THE POTENTIAL FOR FLASH FLOODING ACROSS PARTS OF MONO...MINERAL...AND SOUTHERN LYON COUNTIES SUNDAY AFTERNOON AND EVENING. CAZ073-NVZ001-311300- /O.CON.KREV.FF.A.0002.000000T0000Z-110801T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MONO-MINERAL AND SOUTHERN LYON COUNTIES- INCLUDING THE CITIES OF...BRIDGEPORT...MAMMOTH LAKES... HAWTHORNE...YERINGTON...SMITH VALLEY 1007 PM PDT SAT JUL 30 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SUNDAY EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF EAST CENTRAL CALIFORNIA AND WESTERN NEVADA... INCLUDING THE FOLLOWING AREAS...IN EAST CENTRAL CALIFORNIA... MONO. IN WESTERN NEVADA...MINERAL AND SOUTHERN LYON COUNTIES. * THROUGH SUNDAY EVENING * THUNDERSTORM ACTIVITY HAS DIMINISHED THIS EVENING...ALONG WITH THE THREAT OF FLASH FLOODING THROUGH TONIGHT. * SLOW MOVING THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL AGAIN SUNDAY AFTERNOON AND EVENING. HEAVY DOWNPOURS MAY CAUSE LOCALIZED FLASH FLOODING IN SOME AREAS SUNDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT FLOODING OF SMALL STREAMS...CREEKS AND OTHER DRAINAGE AREAS IS POSSIBLE WITHIN THE WATCH AREA. PEOPLE IN THE WATCH AREA SHOULD MONITOR WEATHER.GOV/RENO FOR UPDATES AND BE PREPARED FOR IMMEDIATE ACTION SHOULD HEAVY RAINS AND FLOODING OCCUR OR A FLASH FLOOD WARNING BE ISSUED. && $$ HOON HTTP://WEATHER.GOV/RENO
773 WGUS65 KREV 310847 FFAREV FLOOD WATCH NATIONAL WEATHER SERVICE RENO NV 147 AM PDT SUN JUL 31 2011 .MONSOON MOISTURE WILL CONTINUE TO PUSH NORTH AND NORTHWEST INTO THE SOUTHERN SIERRA AND WESTERN NEVADA. WEAK FLOW ALOFT WILL RESULT IN SLOW MOVEMENT OF ANY THUNDERSTORMS THAT DEVELOP. THIS SLOW MOVEMENT COMBINED WITH FAIRLY DEEP MOISTURE COULD LEAD TO AREAS OF VERY HEAVY RAIN AND THE POTENTIAL FOR FLASH FLOODING ACROSS PARTS OF MONO...MINERAL...AND SOUTHERN LYON COUNTIES SUNDAY AFTERNOON AND EVENING. CAZ073-NVZ001-312300- /O.CON.KREV.FF.A.0002.000000T0000Z-110801T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MONO-MINERAL AND SOUTHERN LYON COUNTIES- INCLUDING THE CITIES OF...BRIDGEPORT...MAMMOTH LAKES... HAWTHORNE...YERINGTON...SMITH VALLEY 147 AM PDT SUN JUL 31 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH 9 PM THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF EAST CENTRAL CALIFORNIA AND WESTERN NEVADA... INCLUDING THE FOLLOWING AREAS...IN EAST CENTRAL CALIFORNIA... MONO. IN WESTERN NEVADA...MINERAL AND SOUTHERN LYON COUNTIES. * THROUGH 9 PM THIS EVENING * SLOW MOVING THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL AGAIN THIS AFTERNOON AND EVENING. HEAVY DOWNPOURS MAY CAUSE LOCALIZED FLASH FLOODING IN SOME AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT FLOODING OF SMALL STREAMS...CREEKS AND OTHER DRAINAGE AREAS IS POSSIBLE WITHIN THE WATCH AREA. PEOPLE IN THE WATCH AREA SHOULD MONITOR WEATHER.GOV/RENO FOR UPDATES AND BE PREPARED FOR IMMEDIATE ACTION SHOULD HEAVY RAINS AND FLOODING OCCUR OR A FLASH FLOOD WARNING BE ISSUED. && $$ HTTP://WEATHER.GOV/RENO
577 WGUS65 KREV 311715 FFAREV FLOOD WATCH NATIONAL WEATHER SERVICE RENO NV 1015 AM PDT SUN JUL 31 2011 .MONSOON MOISTURE WILL CONTINUE TO PUSH NORTH AND NORTHWEST INTO THE SOUTHERN SIERRA AND WESTERN NEVADA. WEAK FLOW ALOFT WILL RESULT IN SLOW MOVEMENT OF ANY THUNDERSTORMS THAT DEVELOP. THIS SLOW MOVEMENT COMBINED WITH FAIRLY DEEP MOISTURE COULD LEAD TO AREAS OF VERY HEAVY RAIN AND THE POTENTIAL FOR FLASH FLOODING ACROSS PARTS OF MONO...MINERAL...AND SOUTHERN LYON COUNTIES SUNDAY AFTERNOON AND EVENING. CAZ073-NVZ001-010400- /O.CON.KREV.FF.A.0002.000000T0000Z-110801T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MONO-MINERAL AND SOUTHERN LYON COUNTIES- INCLUDING THE CITIES OF...BRIDGEPORT...MAMMOTH LAKES... HAWTHORNE...YERINGTON...SMITH VALLEY 1015 AM PDT SUN JUL 31 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF EAST CENTRAL CALIFORNIA AND WESTERN NEVADA... INCLUDING THE FOLLOWING AREAS...IN EAST CENTRAL CALIFORNIA... MONO. IN WESTERN NEVADA...MINERAL AND SOUTHERN LYON COUNTIES. * UNTIL 9 PM PDT THIS EVENING * STRONG AND SLOW MOVING THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL AGAIN THIS AFTERNOON AND EVENING. HEAVY DOWNPOURS MAY CAUSE LOCALIZED FLASH FLOODING. IN ADDITION...HEAVY RAINFALL FROM YESTERDAY HAS SATURATED SOILS IN SOME AREAS. ADDITIONAL HEAVY RAIN TODAY COULD CAUSE LIFE THREATENING ROCK AND MUDSLIDES IN AREAS OF STEEP TERRAIN. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT FLOODING OF SMALL STREAMS...CREEKS AND OTHER DRAINAGE AREAS IS POSSIBLE WITHIN THE WATCH AREA. PEOPLE SHOULD REMAIN ALERT FOR ROCK AND MUDSLIDES IN AREAS OF STEEP TERRAIN. MONITOR WEATHER.GOV/RENO FOR UPDATES AND BE PREPARED FOR IMMEDIATE ACTION SHOULD HEAVY RAINS AND FLOODING OCCUR OR A FLASH FLOOD WARNING BE ISSUED. && $$ HTTP://WEATHER.GOV/RENO
490 WGUS65 KREV 312358 FFAREV FLOOD WATCH NATIONAL WEATHER SERVICE RENO NV 458 PM PDT SUN JUL 31 2011 CAZ073-NVZ001-010100- /O.CAN.KREV.FF.A.0002.000000T0000Z-110801T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MONO-MINERAL AND SOUTHERN LYON COUNTIES- INCLUDING THE CITIES OF...BRIDGEPORT...MAMMOTH LAKES... HAWTHORNE...YERINGTON...SMITH VALLEY 458 PM PDT SUN JUL 31 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF EAST CENTRAL CALIFORNIA AND WESTERN NEVADA HAS BEEN CANCELLED. MOST THUNDERSTORMS HAVE MOVED OFF TO THE NORTH AND EAST OF THE MONO...MINERAL...AND SOUTHERN LYON COUNTY AREA...THEREFORE THE FLASH FLOOD WATCH HAS BEEN CANCELLED. $$ HTTP://WEATHER.GOV/RENO
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 1:47 PM PDT | Special Weather Statement | REV | Mono | 2 hr |
| Jul 30, 4:27 PM PDT | Flash Flood Warning | REV | Alpine | 96 min |
| Jul 29, 5:10 PM PDT | Special Weather Statement | REV | Douglas | 50 min |
| Jul 29, 5:43 PM PDT | Areal Flood Advisory | REV | Douglas | 2 hr |
| Jul 29, 5:52 PM PDT | Special Weather Statement | REV | Douglas | 23 min |
| Jul 29, 6:14 PM PDT | Special Weather Statement | REV | Douglas, Lyon | 91 min |
| Jul 29, 6:34 PM PDT | Special Weather Statement | REV | 41 min | |
| Jul 29, 6:53 PM PDT | Special Weather Statement | REV | Douglas | 37 min |
| Jul 29, 7:16 PM PDT | Severe Thunderstorm Warning | REV | Storey, Washoe | 44 min |
| Jul 29, 7:55 PM PDT | Severe Thunderstorm Warning | REV | Washoe | 50 min |
| Jul 29, 9:25 PM PDT | Special Weather Statement | REV | Storey | 110 min |
| Jul 30, 3:22 PM PDT | Flash Flood Warning | REV | Lyon | 3 hr |
| Jul 30, 4:40 PM PDT | Special Weather Statement | REV | Douglas | 65 min |
| Jul 30, 4:58 PM PDT | Areal Flood Advisory | REV | Douglas | 48 hr |
Nearby
Flash Flood Watches in Nevada, 2011Flash Flood Watches in California, 2011Every flash flood watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.