Alert archive / California / Flood Watches in 2015

Flood Watch 2, NWS Sacramento, CA

July 9, 2015

NWS Sacramento, CA issued this flood watch at Jul 9, 2015, 2:49 PM PDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Jul 9, 2015, 2:49 PM PDT (21:49 UTC)
Expired
Jul 9, 2015, 8:00 PM PDT
In force
5 hr
Issued by
NWS Sacramento, CA
Flood severity
None

What forecasters said that day

The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sacramento, CA wrote its last area forecast discussion before this flood watch went out at Jul 9, 4:30 AM PDT, 10 hours 19 minutes earlier.

Area forecast discussion, Jul 9, 4:30 AM PDT, 10 hours 19 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
430 AM PDT THU JUL 9 2015

.SYNOPSIS...
SCATTERED MAINLY MOUNTAIN SHOWERS OR THUNDERSTORMS THROUGH FRIDAY
WITH HEAVY RAIN IN MOUNTAINS. ISOLATED FLASH FLOODING IS POSSIBLE.
TEMPERATURES WILL BE BELOW NORMAL WITH A STRONG DELTA BREEZE. DRY
SUNDAY THROUGH THE MIDDLE OF NEXT WEEK WITH A WARMING TREND.

&&
.DISCUSSION...
UPPER LOW NOW CENTERED OVER SOUTH CENTRAL CALIFORNIA AND SHIFTING
EASTWARD. A SHORTWAVE CURRENTLY ROTATING AROUND THE TOPSIDE OF THE
LOW BRINGING SOME SCATTERED LIGHT SHOWERS NORTH OF ABOUT OROVILLE.
ANOTHER SHORTWAVE ROTATING UP THE EAST SIDE OF THE LOW BRINGING
SOME ISOLATED THUNDERSTORM ACTIVITY OVER THE CENTRAL SIERRA AND
THIS THUNDERSTORM ACTIVITY WILL LIKELY ROTATE INTO THE NORTHERN
SIERRA PORTION OF THE CWA LATER THIS MORNING. MEANWHILE...FORT ORD
PROFILER SHOWING A RATHER DEEP MARINE LAYER THIS MORNING AT ABOVE
3500 FEET COMBINED WITH A STRONG DELTA BREEZE. AS A
RESULT...STRATUS DECK HAS EDGED INTO THE DELTA AND MAY MAKE IT
INTO THE SOUTHERN SACRAMENTO VALLEY LATER THIS MORNING. UPPER LOW
WILL SHIFT SLIGHTLY EASTWARD TODAY BUT REMAIN STATIONED MAINLY
OVER NORTHERN AND CENTRAL CALIFORNIA PROVIDING MOISTURE AND
INSTABILITY THROUGH THE DAY FOR A THREAT OF SHOWERS OR
THUNDERSTORMS MOST AREAS. MOST UNSTABLE AREAS REMAIN OVER THE
MOUNTAINS BUT CAN NOT RULE OUT SHOWER OR THUNDERSTORM THREAT
VALLEY AREAS NORTH OF ABOUT SACRAMENTO. SLIGHTLY COOLER AIRMASS
AND CLOUD COVER WILL BRING DOWN HIGH TEMPERATIRES TODAY TO A FEW
TO SEVERAL DEGREES BELOW NORMAL. PRECIPITABLE WATER VALUES
FORECAST TO REMAIN ABOVE AN INCH SO ANY THUNDERSTORM ACTIVITY
SHOULD BE QUITE WET AND ISOLATED FLOODING MAY BE AN ISSUE AGAIN
LIKE YESTERDAY. UPPER LOW LIFTS TO THE NORTHEAST INTO THE GREAT
BASIN ON FRIDAY LEAVING A TROUGH ALONG THE COAST. ENOUGH
INSTABILITY REMAINS FOR ANOTHER ROUND OF MOUNTAIN THUNDERSTORMS
WITH A SLIGHT THREAT OVER THE NORTHERN SACRAMENTO VALLEY. LITTLE
CHANGE IN THE SLIGHTLY BELOW NORMAL TEMPERATURES IS EXPECTED
FRIDAY. A PORTION OF THE WEST COAST UPPER TROUGH MOVES NORTHEAST
TOWARDS THE PACIFIC NORTHWEST ON SATURDAY BRINGING A THREAT OF
SHOWERS OR THUNDERSTORMS OVER THE NORTHERN MOUNTAINS BUT OTHERWISE
MOST LOCATIONS WILL SEE A DRIER PATTERN SATURDAY WITH TEMPERATURES
STARTING TO WARM UP. SUNDAY LOOKS LIKE A DRY DAY ALL AREAS UNDER
STABLE SOUTHWEST FLOW ALOFT AND A WEAK TROUGH OFF THE COAST.
TEMPERATURES WARM SLIGHTLY ON SUNDAY BUT STILL CONE IN A LITTLE
BELOW SEASON NORMALS.

&&

.EXTENDED DISCUSSION (MONDAY THROUGH THURSDAY)

MONDAY INTO THURSDAY, NORCAL WILL BE UNDER THE INFLUENCE OF A
BROAD TROUGH AXIS WITHIN 100 MILES OF THE COAST, WHILE HIGH
PRESSURE LINGERS OVER THE DESERT SOUTHWEST. AS A RESULT, THE
SOUTHWEST FLOW ALOFT WILL BE FAIRLY STABLE AND DRY. TEMPERATURES
WILL GRADUALLY WARM, BUT STAY NEAR TO JUST ABOVE NORMAL.
JCLAPP

&&

.AVIATION...

SCT LIGHT SHOWERS ACROSS NORCAL THIS MORNING NORTH OF I-80.
EXPECT SCT SHOWERS AND THUNDERSTORMS IN THE MOUNTAINS BRINGING
LOCAL MVFR/IFR LATER TODAY WITH ISOLD STORMS SPREADING INTO THE
NRN SAC VALLEY LATE AFTN/EVENING.

MARINE LAYER BETWEEN 3000-4000 FT THICK THIS MORNING. CREEPING IN
SOUTH OF TRAVIS AND REFORMING IN LOWER FOOTHILLS AND ERN SAC
VALLEY FROM NEAR KLHM THROUGH ERN SAC COUNTY. STRATUS EXPANDING
WESTWARD INTO KMCC, KMHR AND KSAC BY SUNRISE. BASES AROUND 012 TO
015 IN VALLEY.  JCLAPP
&&

.STO WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

In the hours before

Special weather statement, Jul 9, 11:15 AM PDT, 3 hours 34 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Jul 9, 12:47 PM PDT, 2 hours 2 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Jul 9, 1:06 PM PDT, 1 hour 43 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Jul 9, 1:17 PM PDT, 1 hour 32 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Jul 9, 1:56 PM PDT, 53 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Sacramento, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 8, 5:11 PM PDTAreal Flood AdvisorySTOLake3 hr
Jul 8, 5:21 PM PDTSpecial Weather StatementSTOLake54 min
Jul 8, 6:12 PM PDTAreal Flood WarningSTOLassen, Plumas, Shasta, Tehama6 hr
Jul 9, 11:15 AM PDTSpecial Weather StatementSTOEl Dorado45 min
Jul 9, 3:03 PM PDTSpecial Weather StatementSTOPlumas87 min

Nearby

Flood Watches in California, 2015Every flood watch in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.