Alert archive / Idaho / Flash Flood Warnings in 2013

Flash Flood Warning 1, NWS Boise, ID

July 2, 2013Camas County, Idaho

NWS Boise, ID issued this flash flood warning at Jul 2, 2013, 6:04 PM MDT for Camas County, Idaho. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 2, 2013, 6:04 PM MDT (00:04 UTC)
Expired
Jul 2, 2013, 9:00 PM MDT
In force
3 hr
Issued by
NWS Boise, ID
Area
Storm-based polygon
Flood severity
None

County Camas County, ID

The radar

The Boise radar (KCBX), 115 km from the middle of the area, began a volume at 00:04 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

Boise Airport, ID (KBOI), launched 00:00Z, 0.1 hours before the alert went out and 113 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.

Skew-T log-pSkew-T log-p diagram, Boise Airport, ID at 00:00Z on 2013-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Boise Airport, ID at 00:00Z on 2013-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
5680 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
17 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Boise, ID wrote its last area forecast discussion before this flash flood warning went out at Jul 2, 3:15 PM MDT, 2 hours 49 minutes earlier.

Area forecast discussion, Jul 2, 3:15 PM MDT, 2 hours 49 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
315 PM MDT TUE JUL 2 2013

.SHORT TERM...GRADUAL COOLING TREND BUT STILL QUITE HOT THROUGH
THURSDAY AS UPPER LEVEL HIGH PRESSURE BEGINS TO WEAKEN.  HEAT
ADVISORY WILL END WEDNESDAY MORNING IN EASTERN OREGON AS HIGH
TEMPS WEDNESDAY STAY BELOW ADVISORY THRESHOLD.  THE ADVISORY
WILL CONTINUE UNTIL THURSDAY MORNING ON THE IDAHO SIDE.  AIR MASS
REMAINS UNSTABLE ENOUGH FOR AFTERNOON AND EVENING THUNDERSTORMS
THROUGHOUT THE CWA BUT MAINLY IN ERN OREGON...OWYHEE MOUNTAINS...
AND IDAHO ZONES NORTH OF THE SNAKE BASIN.

.LONG TERM...THURSDAY NIGHT THROUGH TUESDAY...AN UPPER LEVEL TROUGH
WILL MOVE ACROSS THE PACIFIC NORTHWEST THURSDAY NIGHT THROUGH FRIDAY
WHICH WILL RESULT IN VALLEY TEMPS IN THE LOWER-MID 90S AND MOUNTAIN
TEMPS IN THE LOWER 80S.  LINGERING MOISTURE ON THE BACK SIDE OF THE
DEPARTING RIDGE WILL ALLOW FOR A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS ALONG THE NEVADA BORDER AND IN THE CENTRAL IDAHO
MOUNTAINS THROUGH THE WEEKEND. MONDAY AND TUESDAY LOOK DRY...BUT
WARMER /MID TO UPPER 90S ACROSS LOWER VALLEYS/ AS THE WESTERN CONUS
RIDGE REAMPLIFIES BEHIND THE EXITING TROUGH.

&&

.AVIATION...VFR UNDER SCT-BKN MID AND HIGH CLOUDS THROUGH 21Z.
SCATTERED MVFR SHOWERS AND IFR THUNDERSTORMS WILL REDEVELOP AFTER
21Z MAINLY ACROSS EASTERN OREGON AND THE HIGHER TERRAIN OF SW IDAHO.
THUNDERSTORMS MAY PRODUCE HEAVY RAIN...SMALL HAIL...AND GUSTY/ERRATIC
WINDS. LIGHT SURFACE WINDS /GENERALLY 10 KTS OR LESS/ EXCEPT IN THE
VICINITY STORMS. VARIABLE WINDS ALOFT WILL AVERAGE 12 KTS OR LESS
UP TO 10K FEET MSL.

HOT TEMPERATURES THROUGH WEDNESDAY WILL INCREASE DENSITY ALTITUDE -
MAKING SHORTER HIGH-ELEVATION BACKCOUNTRY STRIPS MORE TECHNICAL.
PLAN ACCORDINGLY.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...HEAT ADVISORY UNTIL 10 AM MDT THURSDAY IDZ012-014-016-033.
OR...HEAT ADVISORY UNTIL 9 AM PDT WEDNESDAY ORZ063.
     HEAT ADVISORY UNTIL 10 AM MDT THURSDAY ORZ064.
     RED FLAG WARNING FROM 3 PM MDT / 2 PM PDT/ THIS AFTERNOON TO
     MIDNIGHT MDT / 11 PM PDT/ TONIGHT ORZ636-637.

&&

WEATHER.GOV/BOISE

SHORT TERM...LC
LONG TERM....CB/WH
AVIATION.....CB
Hazardous weather outlook, Jul 2, 3:19 AM MDT, 14 hours 45 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BOISE ID
319 AM MDT TUE JUL 2 2013

IDZ012-014-016-033-ORZ063-064-030930-
LOWER TREASURE VALLEY ID-UPPER TREASURE VALLEY-
WESTERN MAGIC VALLEY-UPPER WEISER RIVER-MALHEUR COUNTY-
LOWER TREASURE VALLEY OR-
319 AM MDT TUE JUL 2 2013 /219 AM PDT TUE JUL 2 2013/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
IDAHO...SOUTHWEST IDAHO...WEST CENTRAL IDAHO AND SOUTHEAST
OREGON.

.DAY ONE...TODAY AND TONIGHT

THE HEAT ADVISORY IS NOW IN EFFECT UNTIL 4 AM MDT OR 3 AM PDT
THURSDAY FOR THE TREASURE VALLEY...WESTERN MAGIC VALLEY...UPPER
WEISER RIVER AND MALHEUR COUNTY.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THE HEAT ADVISORY IS NOW IN EFFECT UNTIL 4 AM MDT OR 3 AM PDT
THURSDAY FOR THE TREASURE VALLEY...WESTERN MAGIC VALLEY...UPPER
WEISER RIVER AND MALHEUR COUNTY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

IDZ011-013-015-028>030-ORZ061-062-030930-
WEST CENTRAL MOUNTAINS-BOISE MOUNTAINS-SOUTHWEST HIGHLANDS-
CAMAS PRAIRIE-OWYHEE MOUNTAINS-SOUTHERN TWIN FALLS COUNTY-
HARNEY COUNTY-BAKER COUNTY-
319 AM MDT TUE JUL 2 2013 /219 AM PDT TUE JUL 2 2013/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
IDAHO...SOUTHWEST IDAHO...WEST CENTRAL IDAHO...NORTHEAST OREGON
AND SOUTHEAST OREGON.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

In the hours before

Local storm report, Jul 2, 5:34 PM MDT, 30 minutes before
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Local storm report, Jul 2, 5:48 PM MDT, 16 minutes before
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<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.
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The office that day

Everything else NWS Boise, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 1:35 AM MDTSpecial Weather StatementBOIAda85 min
Jul 3, 3:08 AM MDTAreal Flood AdvisoryBOIOwyhee4 hr
Jul 3, 8:20 AM MDTRed Flag WarningBOIOwyhee, Twin Falls19 hr
Jul 3, 5:40 PM MDTSpecial Weather StatementBOIGooding50 min
Jul 3, 5:57 PM MDTSpecial Weather StatementBOI48 min

Nearby

Flash Flood Warnings in Idaho, 2013Every flash flood warning in 2013

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.