Alert archive / Utah / Flash Flood Watches in 2010

Flash Flood Watch 2, NWS Salt Lake City, UT

April 21, 2010

NWS Salt Lake City, UT issued this flash flood watch at Apr 21, 2010, 3:08 AM MDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Apr 21, 2010, 3:08 AM MDT (09:08 UTC)
Expired
Apr 21, 2010, 10:00 AM MDT
In force
7 hr
Issued by
NWS Salt Lake City, UT
Flood severity
None

What forecasters said that day

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

NWS Salt Lake City, UT wrote its last area forecast discussion before this flash flood watch went out at Apr 20, 7:59 PM MDT, 7 hours 9 minutes earlier.

Area forecast discussion, Apr 20, 7:59 PM MDT, 7 hours 9 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>
Hazardous weather outlook, Apr 20, 6:32 AM MDT, 20 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
632 AM MDT TUE APR 20 2010

UTZ001>016-019>021-517-518-WYZ021-211300-
CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT-
SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT-
GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS-
WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-
WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS-
WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL-
SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH-
UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH-
GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS-
SOUTHERN MOUNTAINS-SOUTHWEST WYOMING-
632 AM MDT TUE APR 20 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF
UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT OVER CENTRAL NEVADA WILL GENERATE STRONG SOUTHERLY WINDS
ACROSS THE WESTERN VALLEYS OF UTAH THIS AFTERNOON THROUGH THIS
EVENING. A WIND ADVISORY WILL BE IN EFFECT LATE THIS MORNING
THROUGH LATE THIS EVENING FOR THE WESTERN VALLEYS FROM CEDAR CITY
NORTH THROUGH THE SALT FLATS...INCLUDING THE TOOELE AND WESTERN
SALT LAKE VALLEYS.

MOISTURE ALONG THE UTAH/ARIZONA BORDER WILL ALSO BE DRAWN NORTHWARD
BY THE FRONT TODAY. SCATTERED SHOWERS AND THUNDERSTORMS WILL
DEVELOP OVER THE HIGH TERRAIN THIS AFTERNOON...AND CONTINUE THROUGH
THE OVERNIGHT HOURS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A COLD LATE SEASON STORM...CURRENTLY ALONG THE NORTHERN CALIFORNIA
COAST...WILL TURN EAST SOUTHEAST THROUGH CALIFORNIA TODAY. THIS
STORM WILL SETTLE INTO SOUTHERN NEVADA EARLY WEDNESDAY...THEN
CONTINUE SLOWLY INTO CENTRAL ARIZONA THURSDAY THROUGH EARLY FRIDAY.
THE ASSOCIATED SURFACE COLD FRONT WILL ENTER SOUTHWEST UTAH
WEDNESDAY MORNING...THEN TURN NORTHEAST THROUGH CENTRAL THEN
NORTHERN UTAH WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING. MUCH
COOLER TEMPERATURES WILL REPLACE THE UNSEASONABLY WARM READINGS OF
THE PAST SEVERAL DAYS. WIDESPREAD PRECIPITATION WILL EXIST ALONG
AND BEHIND THE FRONT...WITH THE POTENTIAL FOR HEAVY SNOW AT THE
HIGHER ELEVATIONS OF SOUTHERN AND CENTRAL UTAH.

PRECIPITATION WILL TAPER OFF ACROSS CENTRAL AND SOUTHERN UTAH
THURSDAY AS THE STORM SYSTEM TRACKS THROUGH CENTRAL ARIZONA.
NORTHERN UTAH WILL SEE PRECIPITATION INCREASE THURSDAY NIGHT
THROUGH EARLY FRIDAY AS A SECONDARY WEATHER DISTURBANCES MOVES
SOUTHEAST THROUGH THE REGION. LOCALLY HEAVY SNOWFALL WILL BE
POSSIBLE IN THE MOUNTAINS WITH THIS SYSTEM.

PRECIPITATION WILL TAPER OFF LATE FRIDAY AS HIGH PRESSURE ALOFT
BUILDS ACROSS THE INTERIOR WEST. SATURDAY WILL BRING WARMER
TEMPERATURES AND DRY CONDITIONS WHICH WILL EXTEND INTO SATURDAY
NIGHT. A NEW WEATHER DISTURBANCE WILL AFFECT PRIMARILY NORTHERN
UTAH AND SOUTHWEST WYOMING LATE SUNDAY THROUGH EARLY MONDAY.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 21, 10:33 AM MDTSpecial Weather StatementSLCTooele42 min
Apr 21, 11:04 AM MDTSevere Thunderstorm WarningSLCBox Elder, Davis, Tooele41 min
Apr 21, 12:50 PM MDTSpecial Weather StatementSLCSalt Lake40 min
Apr 21, 12:59 PM MDTSevere Thunderstorm WarningSLCDavis, Salt Lake, Utah46 min
Apr 21, 1:37 PM MDTSevere Thunderstorm WarningSLCDavis, Morgan, Salt Lake38 min
Apr 21, 2:12 PM MDTSpecial Weather StatementSLCDavis, Weber48 min
Apr 21, 2:34 PM MDTSpecial Weather StatementSLCWeber41 min
Apr 21, 2:43 PM MDTSevere Thunderstorm WarningSLCBox Elder, Cache, Weber47 min
Apr 21, 3:27 PM MDTSevere Thunderstorm WarningSLCBox Elder, Cache33 min
Apr 21, 5:17 PM MDTSpecial Weather StatementSLCRich43 min

Nearby

Flash Flood Watches in Utah, 2010Every flash flood watch in 2010

Sources

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