Alert archive / California / River Flood Warnings in 2011
River Flood Warning 2, NWS Hanford, CA
NWS Hanford, CA issued this river flood warning at Jun 13, 2011, 12:09 PM PDT for Mariposa County, California. It took effect at Jun 15, 2011, 2:30 AM PDT. It was in force for 55 hr.
The area
The counties it named.
The facts
- Issued
- Jun 13, 2011, 12:09 PM PDT (19:09 UTC)
- In effect from
- Jun 15, 2011, 2:30 AM PDT
- Expired
- Jun 17, 2011, 9:45 AM PDT
- In force
- 55 hr
- Issued by
- NWS Hanford, CA
- Flood severity
- Minor
County Mariposa County, CA
The radar
The San Joaquin Valley radar (KHNX), 143 km from the middle of the area, began a volume at 19:05 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 river
Written for the forecast point Merced River at Pohono Bridge (POHC1). The gauge peaked at 10.40 ft at Jun 16, 2011, 5:00 AM PDT.
- Minor stage
- 10 ft
- Moderate stage
- 12.5 ft
- Major stage
- 20 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 11266500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The text
As transmitted, in the capitals the NWS used until 2016.
447 WGUS46 KHNX 131909 FLWUSJ BULLETIN - IMMEDIATE BROADCAST REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 1209 PM PDT MON JUN 13 2011 ...THE NATIONAL WEATHER SERVICE IN HANFORD HAS ISSUED A FLOOD WARNING FOR THE FOLLOWING RIVERS IN CALIFORNIA... MERCED RIVER AT POHONO BRIDGE THE WARMEST TEMPERATURES OF THE SNOWMELT SEASON ARE EXPECTED OVER THE NEXT SEVERAL DAYS. THIS WILL CAUSE THE MERCED RIVER AT POHONO BRIDGE TO REACH FLOOD STAGE TUESDAY EVENING...CONTINUING UNTIL FURTHER NOTICE. THIS WILL BRING FLOODING TO CAMPGROUNDS AND TRAILS IN YOSEMITE VALLEY AND YOU SHOULD PAY CLOSE ATTENTION TO PARK OFFICIALS FOR ANY CLOSURES. FORECASTS ARE BASED ON PRESENT AND FORECASTED METEOROLOGICAL AND HYDROLOGIC CONDITIONS AT TIME OF ISSUANCE. PRECAUTIONARY/PREPAREDNESS ACTIONS... UNLISTED FORECAST POINTS ARE EXPECTED TO REMAIN BELOW MONITOR STAGE. ALL THOSE AFFECTED BY RIVER CONDITIONS SHOULD REMAIN ALERT FOR RAPID CHANGES AND FOR POSSIBLE FORECAST REVISIONS. FOR MORE HYDROLOGIC INFORMATION AND STAGE DEFINITIONS REFER TO THE FOLLOWING WEB SITE (ALL LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/HNX/HYDRO.PHP && CAC043-142109- /O.NEW.KHNX.FL.W.0002.110615T0340Z-000000T0000Z/ /POHC1.1.ER.110615T0340Z.110615T1200Z.000000T0000Z.NO/ 1209 PM PDT MON JUN 13 2011 THE NATIONAL WEATHER SERVICE IN HANFORD HAS ISSUED A * FLOOD WARNING FOR THE MERCED RIVER AT POHONO BRIDGE. * FROM TUESDAY EVENING UNTIL FURTHER NOTICE. * AT 11:00 AM MONDAY THE STAGE WAS 8.8 FEET. * MINOR FLOODING IS FORECAST. * FORECAST TO RECEDE TO NEAR 8.0 FT THIS EVENING THEN EXPECTED TO RISE ABOVE FLOOD STAGE OF 10.0 FT TOMORROW EVENING THEN FORECAST TO RISE TO NEAR 11.0 FT WEDNESDAY MORNING THEN FORECAST TO RECEDE TO NEAR 10.5 FT WEDNESDAY EARLY AFTERNOON. * FLOOD STAGE 10.0 FT * IMPACT...NEAR 11.5 FEET, SEWAGE PUMPING RELAY STATION AT NORTH PINES CAMPGROUND BECOMES FLOODED. * IMPACT...NEAR 10.5 FEET, WATER TOPS THE SWINGING BRIDGE DOWNSTREAM FROM CHAPEL MEADOW. OVERFLOW FROM WOSKI POND FLOODS ACCESS ROAD(NORTHSIDE DRIVE) LEADING OUT OF THE WEST ENTRANCE OF THE PARK. * IMPACT...NEAR 10.0 FEET, WESTERN PORTION OF NORTH PINES CAMPGROUND...LOCATED AT THE EAST END OF YOSEMITE VALLEY BETWEEN THE CONFLUENCE OF THE MERCED RIVER AND TENAYA CREEK...BEGINS TO FLOOD. WATER RISES TO THE BASE OF THE SWINGING BRIDGE DOWNSTREAM FROM CHAPEL MEADOW. $$ BINGHAM
4 follow-up statements
041 WGUS86 KHNX 141631 FLSUSJ FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 931 AM PDT TUE JUN 14 2011 ...A FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN CALIFORNIA... MERCED RIVER AT POHONO BRIDGE .THE WARMEST TEMPERATURES OF THE SNOWMELT SEASON ARE EXPECTED OVER THE NEXT SEVERAL DAYS. THIS WILL CAUSE THE MERCED RIVER AT POHONO BRIDGE TO REACH FLOOD STAGE LATE TONIGHT...CONTINUING UNTIL FURTHER NOTICE. THIS WILL BRING FLOODING TO CAMPGROUNDS AND TRAILS IN YOSEMITE VALLEY AND YOU SHOULD PAY CLOSE ATTENTION TO PARK OFFICIALS FOR ANY CLOSURES. FORECASTS ARE BASED ON PRESENT AND FORECASTED METEOROLOGICAL AND HYDROLOGIC CONDITIONS AT TIME OF ISSUANCE. PRECAUTIONARY/PREPAREDNESS ACTIONS... UNLISTED FORECAST POINTS ARE EXPECTED TO REMAIN BELOW MONITOR STAGE. ALL THOSE AFFECTED BY RIVER CONDITIONS SHOULD REMAIN ALERT FOR RAPID CHANGES AND FOR POSSIBLE FORECAST REVISIONS. FOR MORE HYDROLOGIC INFORMATION AND STAGE DEFINITIONS REFER TO THE FOLLOWING WEB SITE (ALL LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/HNX/HYDRO.PHP && CAC043-151831- /O.EXT.KHNX.FL.W.0002.110615T0930Z-000000T0000Z/ /POHC1.1.ER.110615T0930Z.110616T1300Z.000000T0000Z.NO/ 931 AM PDT TUE JUN 14 2011 THE FLOOD WARNING CONTINUES FOR THE MERCED RIVER AT POHONO BRIDGE. * FROM LATE TONIGHT UNTIL FURTHER NOTICE. * AT 8:00 AM TUESDAY THE STAGE WAS 9.3 FEET. * MINOR FLOODING IS FORECAST. * FORECAST TO RECEDE TO NEAR 8.5 FT THIS EVENING THEN EXPECTED TO RISE ABOVE FLOOD STAGE OF 10.0 FT AFTER MIDNIGHT TOMORROW THEN FORECAST TO CREST NEAR 12.0 FT THURSDAY MORNING THEN FORECAST TO FLUCTUATE NEAR 11.0 FT THRU LATE THURSDAY MORNING. * FLOOD STAGE 10.0 FT * MONITOR STAGE MSG FT, * IMPACT...NEAR 11.5 FEET, SEWAGE PUMPING RELAY STATION AT NORTH PINES CAMPGROUND BECOMES FLOODED. * IMPACT...NEAR 10.5 FEET, WATER TOPS THE SWINGING BRIDGE DOWNSTREAM FROM CHAPEL MEADOW. OVERFLOW FROM WOSKI POND FLOODS ACCESS ROAD(NORTHSIDE DRIVE) LEADING OUT OF THE WEST ENTRANCE OF THE PARK. * IMPACT...NEAR 10.0 FEET, WESTERN PORTION OF NORTH PINES CAMPGROUND...LOCATED AT THE EAST END OF YOSEMITE VALLEY BETWEEN THE CONFLUENCE OF THE MERCED RIVER AND TENAYA CREEK...BEGINS TO FLOOD. WATER RISES TO THE BASE OF THE SWINGING BRIDGE DOWNSTREAM FROM CHAPEL MEADOW. $$
451 WGUS86 KHNX 151635 FLSUSJ FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 935 AM PDT WED JUN 15 2011 ...A FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN CALIFORNIA... MERCED RIVER AT POHONO BRIDGE .THE WARMEST TEMPERATURES OF THE SNOWMELT SEASON ARE EXPECTED TODAY. THIS WILL CAUSE THE MERCED RIVER AT POHONO BRIDGE TO REACH FLOOD STAGE TONIGHT...CONTINUING UNTIL FURTHER NOTICE. THIS WILL BRING FLOODING TO CAMPGROUNDS AND TRAILS IN YOSEMITE VALLEY AND YOU SHOULD PAY CLOSE ATTENTION TO PARK OFFICIALS FOR ANY CLOSURES. FORECASTS ARE BASED ON PRESENT AND FORECASTED METEOROLOGICAL AND HYDROLOGIC CONDITIONS AT TIME OF ISSUANCE. PRECAUTIONARY/PREPAREDNESS ACTIONS... UNLISTED FORECAST POINTS ARE EXPECTED TO REMAIN BELOW MONITOR STAGE. ALL THOSE AFFECTED BY RIVER CONDITIONS SHOULD REMAIN ALERT FOR RAPID CHANGES AND FOR POSSIBLE FORECAST REVISIONS. FOR MORE HYDROLOGIC INFORMATION AND STAGE DEFINITIONS REFER TO THE FOLLOWING WEB SITE (ALL LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/HNX/HYDRO.PHP && CAC043-161835- /O.CON.KHNX.FL.W.0002.000000T0000Z-000000T0000Z/ /POHC1.1.ER.110616T0630Z.110617T1000Z.000000T0000Z.NO/ 935 AM PDT WED JUN 15 2011 THE FLOOD WARNING CONTINUES FOR THE MERCED RIVER AT POHONO BRIDGE. * AT 9:00 AM WEDNESDAY THE STAGE WAS 9.8 FEET. * MINOR FLOODING IS FORECAST. * FORECAST TO RECEDE TO NEAR 9.0 FT LATE THIS AFTERNOON THEN EXPECTED TO RISE ABOVE FLOOD STAGE OF 10.0 FT TONIGHT THEN FORECAST TO RISE TO NEAR 11.0 FT FRIDAY MORNING THEN FORECAST TO RECEDE TO NEAR 11.0 FT LATE FRIDAY MORNING. * FLOOD STAGE 10.0 FT * MONITOR STAGE MSG FT, * IMPACT...NEAR 11.5 FEET, SEWAGE PUMPING RELAY STATION AT NORTH PINES CAMPGROUND BECOMES FLOODED. * IMPACT...NEAR 10.5 FEET, WATER TOPS THE SWINGING BRIDGE DOWNSTREAM FROM CHAPEL MEADOW. OVERFLOW FROM WOSKI POND FLOODS ACCESS ROAD(NORTHSIDE DRIVE) LEADING OUT OF THE WEST ENTRANCE OF THE PARK. * IMPACT...NEAR 10.0 FEET, WESTERN PORTION OF NORTH PINES CAMPGROUND...LOCATED AT THE EAST END OF YOSEMITE VALLEY BETWEEN THE CONFLUENCE OF THE MERCED RIVER AND TENAYA CREEK...BEGINS TO FLOOD. WATER RISES TO THE BASE OF THE SWINGING BRIDGE DOWNSTREAM FROM CHAPEL MEADOW. $$
102 WGUS86 KHNX 161606 FLSUSJ FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 906 AM PDT THU JUN 16 2011 ...A FLOOD WARNING CONTINUES FOR THE MERCED RIVER AT POHONO BRIDGE UNTIL NOON FRIDAY... .WARM TEMPERATURES WILL CONTINUE TO CAUSE SNOWMELT TODAY AND THE MERCED RIVER AT POHONO BRIDGE WILL REACH FLOOD STAGE AGAIN LATE TONIGHT. FORECASTS ARE BASED ON PRESENT AND FORECASTED METEOROLOGICAL AND HYDROLOGIC CONDITIONS AT TIME OF ISSUANCE. PRECAUTIONARY/PREPAREDNESS ACTIONS... UNLISTED FORECAST POINTS ARE EXPECTED TO REMAIN BELOW MONITOR STAGE. ALL THOSE AFFECTED BY RIVER CONDITIONS SHOULD REMAIN ALERT FOR RAPID CHANGES AND FOR POSSIBLE FORECAST REVISIONS. FOR MORE HYDROLOGIC INFORMATION AND STAGE DEFINITIONS REFER TO THE FOLLOWING WEB SITE (ALL LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/HNX/HYDRO.PHP && CAC043-171806- /O.EXT.KHNX.FL.W.0002.000000T0000Z-110618T0700Z/ /POHC1.1.ER.110616T0610Z.110616T1115Z.110617T1300Z.NO/ 906 AM PDT THU JUN 16 2011 THE FLOOD WARNING CONTINUES FOR THE MERCED RIVER AT POHONO BRIDGE. * AT 8:00 AM THURSDAY THE STAGE WAS 10.2 FEET. * FORECAST TO RECEDE TO 9.2 FEET THURSDAY AFTERNOON THEN RISE TO 10.0 FEET AROUND 3 AM FRIDAY. * FORECAST TO RECEDE TO NEAR 9.0 FT FRIDAY EVENING THEN FORECAST TO FLUCTUATE NEAR 9.5 FT THRU SATURDAY MORNING. * FLOOD STAGE 10.0 FT * MONITOR STAGE MSG FT, * IMPACT...NEAR 10.5 FEET, WATER TOPS THE SWINGING BRIDGE DOWNSTREAM FROM CHAPEL MEADOW. OVERFLOW FROM WOSKI POND FLOODS ACCESS ROAD(NORTHSIDE DRIVE) LEADING OUT OF THE WEST ENTRANCE OF THE PARK. * IMPACT...NEAR 10.0 FEET, WESTERN PORTION OF NORTH PINES CAMPGROUND...LOCATED AT THE EAST END OF YOSEMITE VALLEY BETWEEN THE CONFLUENCE OF THE MERCED RIVER AND TENAYA CREEK...BEGINS TO FLOOD. WATER RISES TO THE BASE OF THE SWINGING BRIDGE DOWNSTREAM FROM CHAPEL MEADOW. $$ BEAN
279 WGUS86 KHNX 171645 FLSUSJ FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 945 AM PDT FRI JUN 17 2011 ...THE FLOOD WARNING FOR THE MERCED RIVER AT POHONO BRIDGE WILL BE ALLOWED TO EXPIRE AT NOON TODAY... .WARM TEMPERATURES WILL CONTINUE TO CAUSE SNOWMELT TODAY AND THE MERCED RIVER AT POHONO BRIDGE WILL REMAIN JUST BELOW FLOOD STAGE THIS MORNING. FORECASTS ARE BASED ON PRESENT AND FORECASTED METEOROLOGICAL AND HYDROLOGIC CONDITIONS AT TIME OF ISSUANCE. PRECAUTIONARY/PREPAREDNESS ACTIONS... UNLISTED FORECAST POINTS ARE EXPECTED TO REMAIN BELOW MONITOR STAGE. ALL THOSE AFFECTED BY RIVER CONDITIONS SHOULD REMAIN ALERT FOR RAPID CHANGES AND FOR POSSIBLE FORECAST REVISIONS. FOR MORE HYDROLOGIC INFORMATION AND STAGE DEFINITIONS REFER TO THE FOLLOWING WEB SITE (ALL LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/HNX/HYDRO.PHP && CAC043-171715- /O.CAN.KHNX.FL.W.0002.000000T0000Z-110618T0700Z/ /POHC1.1.ER.110616T0610Z.110616T1115Z.000000T0000Z.NO/ 945 AM PDT FRI JUN 17 2011 THE FLOOD WARNING IS CANCELLED FOR THE MERCED RIVER AT POHONO BRIDGE. * AT 9:00 AM FRIDAY THE STAGE WAS 9.4 FEET. * FORECAST TO RECEDE TO NEAR 8.5 FT THIS EVENING THEN FORECAST TO RISE TO NEAR 9.5 FT EARLY TOMORROW THEN FORECAST TO FLUCTUATE NEAR 9.0 FT THRU TOMORROW LATE MORNING. * FLOOD STAGE 10.0 FT * IMPACT...NEAR 9.5 FEET, PORTION OF LOWER PINES CAMPGROUND BECOMES FLOODED. LIMITED SITE-SPECIFIC EVACUATIONS BEGIN AT HOUSEKEEPING CAMP LOCATED ALONG THE SOUTH-FACING BANK OF THE MERCED RIVER. (UPSTREAM FROM SENTINEL BRIDGE AND DOWNSTREAM FROM STONEMAN BRIDGE) * IMPACT...NEAR 9.0 FEET, CHAPEL MEADOW (SOUTH SIDE OF RIVER) AND COOKS MEADOW (NORTH SIDE OF RIVER) BEGINS TO EXPERIENCE OVERFLOW. * IMPACT...NEAR 6.5 FEET, RIVER IS CLOSED TO RAFTERS AND FLOTATION. $$
What forecasters said that day
The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Hanford, CA wrote its last area forecast discussion before this river flood warning went out at Jun 13, 9:20 AM PDT, 2 hours 49 minutes earlier.
Area forecast discussion, Jun 13, 9:20 AM PDT, 2 hours 49 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 920 AM PDT MON JUN 13 2011 .SYNOPSIS... HIGH PRESSURE WILL BUILD INTO THE REGION THROUGH TUESDAY BRINGING WARMING TEMPERATURES. THE HIGH WILL WEAKEN ON WEDNESDAY AND THURSDAY AS A TROUGH OF LOW PRESSURE MOVES ACROSS THE PACIFIC NORTHWEST. THIS WILL INDUCE COOLER TEMPERATURES AND AN INCREASE IN WINDS WHICH WILL PERSIST INTO THE WEEKEND. && .DISCUSSION...NO UPDATE THIS MORNING AS FCST HAS THE WARMING TREND WELL DEPICTED. MARINE LAYER HAS DECREASED TO 1600 FEET ON THE FT ORD PROFILER AND SHUT DOWN THE ONSHORE FLOW INTO THE VALLEY. CURRENT TEMPS RUNNING 5-9 DEGS ABOVE YESTERDAY...AND AS MUCH AS 12 DEGS IN THE MTNS. && .PREV DISCUSSION... /ISSUED 420 AM PDT MON JUN 13 2011/ DISCUSSION... AN UPPER LEVEL RIDGE BUILDING INTO THE REGION FROM THE PACIFIC WILL INTERRUPT THE RECENT DAYS OF COOLER THAN NORMAL TEMPERATURES. ANOTHER WEAK SHORTWAVE IMPULSE CURRENTLY DROPPING INTO THE GREAT BASIN WILL HOWEVER TEMPER THE WARMUP FOR TODAY AND HIGHS THIS AFTERNOON SHOULD TOP OUT RIGHT AROUND CLIMO. WARMING WILL CONTINUE INTO MIDWEEK AS THE UPPER RIDGE STRENGTHENS...REACHING AS MUCH AS 5-10 DEGREES ABOVE SEASONAL AVERAGES BY WEDNESDAY. ANOTHER DEVELOPING TROUGH DROPPING SOUTH FROM THE PACIFIC NORTHWEST WILL THEN RETURN A COOLING TREND TO OUR AREA INTO THE WEEKEND. THE GFS CONTINUES TO SHOW A DEEPER TROUGH PASSING THROUGH THE AREA THAN THE ECMWF...THOUGH THE ECMWF HAS LATELY BEEN TRENDING TOWARD THE GFS SOLUTION. OUR FORECAST HAS THE PASSING TROUGH LOWERING TEMPERATURES BACK TO AROUND 5-10 DEGREES BELOW CLIMO BY THE WEEKEND THEN CLIMBING JUST A FEW DEGREES FOR THE FIRST OF NEXT WEEK AS THE TROUGH EXITS TO THE EAST. THERE SHOULD BE JUST SOME SCATTERED CU DEVELOPING OVER THE SIERRA EACH AFTERNOON...WITH NO PRECIPITATION EXPECTED THROUGH THE PERIOD. THE FLOOD WATCH CONTINUES FOR THE SIERRA ZONES ABOVE THE RESERVOIRS AS THE ABUNDANT SNOWPACK MELTS IN THE WARMING TEMPERATURES. && .AVIATION... VFR CONDITIONS CAN BE EXPECTED ACROSS THE CENTRAL CA INTERIOR THROUGH 18Z TUESDAY. && .AIR QUALITY ISSUES... NONE. && .HNX WATCHES/WARNINGS/ADVISORIES... FLOOD WATCH THROUGH LATE WEDNESDAY NIGHT CAZ093-094-096-097. && PUBLIC...BINGHAM AVN/FW...MV SYNOPSIS...BSO WEATHER.GOV/HANFORD
Hazardous weather outlook, Jun 13, 5:08 AM PDT, 7 hours 1 minute before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 508 AM PDT MON JUN 13 2011 CAZ096-097-141230- SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON- TULARE COUNTY MOUNTAINS- 508 AM PDT MON JUN 13 2011 ...POSSIBLE FLOODING IN THE SIERRA NEVADA... THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE HIGHER ELEVATIONS OF THE SOUTHERN SIERRA NEVADA. .DAY ONE...TODAY AND TONIGHT A FLOOD WATCH IS IN EFFECT. FOR DETAILS REFER TO THE FLOOD WATCH MESSAGE SFOFFAHNX ISSUED BY THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN HANFORD. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THE FLOOD WATCH WILL REMAIN IN EFFECT UNTIL FURTHER NOTICE. FOR DETAILS REFER TO THE FLOOD WATCH MESSAGE SFOFFAHNX ISSUED BY THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN HANFORD. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION IS NOT ANTICIPATED. WEATHER SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT OR UNUSUAL CONDITIONS TO THE NATIONAL WEATHER SERVICE. WEATHER.GOV/HANFORD
Nearby
River Flood Warnings in California, 2011Every river flood 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.