Alert archive / Idaho / Flash Flood Warnings in 2013
Flash Flood Warning 15, NWS Boise, ID
NWS Boise, ID issued this flash flood warning at Sep 12, 2013, 6:32 PM MDT for Elmore 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
- Sep 12, 2013, 6:32 PM MDT (00:32 UTC)
- Expired
- Sep 12, 2013, 9:30 PM MDT
- In force
- 3 hr
- Issued by
- NWS Boise, ID
- Area
- Storm-based polygon
- Flood severity
- None
County Elmore County, ID
The radar
The Boise radar (KCBX), 64 km from the middle of the area, began a volume at 00:33 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, 0.5 hours before the alert went out and 64 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
- 124 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 2054 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
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 Sep 12, 2:55 PM MDT, 3 hours 37 minutes earlier.
Area forecast discussion, Sep 12, 2:55 PM MDT, 3 hours 37 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, Sep 12, 6:04 AM MDT, 12 hours 28 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BOISE ID 604 AM MDT THU SEP 12 2013 IDZ011>016-028>030-033-131215- WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY ID-BOISE MOUNTAINS- UPPER TREASURE VALLEY-SOUTHWEST HIGHLANDS-WESTERN MAGIC VALLEY- CAMAS PRAIRIE-OWYHEE MOUNTAINS-SOUTHERN TWIN FALLS COUNTY- UPPER WEISER RIVER- 604 AM MDT THU SEP 12 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL IDAHO...SOUTHWEST IDAHO AND WEST CENTRAL IDAHO. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS TODAY WILL PRODUCE BRIEF HEAVY RAIN. THOSE WITH INTERSESTS NEAR RECENT BURN SCARS...ESPECIALLY THOSE THAT HAVE RECENTLY FLOWED...SHOULD PAY ATTENTION TO WEATHER CONDITIONS THROUGH THIS EVENING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. ORZ061>064-131215- HARNEY COUNTY-BAKER COUNTY-MALHEUR COUNTY- LOWER TREASURE VALLEY OR- 604 AM MDT THU SEP 12 2013 /504 AM PDT THU SEP 12 2013/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST OREGON AND SOUTHEAST OREGON. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Special weather statement, Sep 12, 5:55 PM MDT, 37 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOISE ID 555 PM MDT THU SEP 12 2013 IDZ014-015-130100- OWYHEE ID-ELMORE ID- 555 PM MDT THU SEP 12 2013 THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... SOUTHWESTERN ELMORE COUNTY IN SOUTHWEST IDAHO... AND NORTH CENTRAL OWYHEE COUNTY IN SOUTHWEST IDAHO... UNTIL 700 PM MDT. AT 548 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR GRAND VIEW...MOVING WEST AT 10 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. THE THUNDERSTORM WILL BE NEAR... HINTON RESERVOIR AND C J STRIKE DAM AROUND 555 PM MDT... GRAND VIEW AROUND 600 PM MDT... OREANA AROUND 700 PM MDT. LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. TAKE SHELTER INSIDE A BUILDING OR VEHICLE WHEN THUNDERSTORMS APPROACH. LIGHTNING CAN OCCUR 15 MILES OR MORE AWAY FROM THE CENTER OF A STORM. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. LAT...LON 4284 11640 4312 11636 4306 11595 4288 11595 TIME...MOT...LOC 2355Z 092DEG 8KT 4297 11608 BW
Special weather statement, Sep 12, 5:59 PM MDT, 33 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>Special weather statement, Sep 12, 6:11 PM MDT, 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOISE ID 611 PM MDT THU SEP 12 2013 IDZ011>014-033-130115- ADA ID-VALLEY ID-BOISE ID-WASHINGTON ID-GEM ID- 611 PM MDT THU SEP 12 2013 THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... NORTH CENTRAL ADA COUNTY IN SOUTHWEST IDAHO... CENTRAL GEM COUNTY IN SOUTHWEST IDAHO... SOUTHEASTERN WASHINGTON COUNTY IN SOUTHWEST IDAHO... WEST CENTRAL BOISE COUNTY IN WEST CENTRAL IDAHO... AND SOUTHWESTERN VALLEY COUNTY IN WEST CENTRAL IDAHO... UNTIL 715 PM MDT. AT 606 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES EAST OF OLA TO 10 MILES SOUTH OF HORSESHOE BEND...AND MOVING WEST AT 10 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. THE THUNDERSTORMS WILL BE NEAR... BANKS AND BIG EDDY AROUND 610 PM MDT... HORSESHOE BEND AND GARDENA AROUND 625 PM MDT... OLA AROUND 655 PM MDT... SWEET AROUND 705 PM MDT... MONTOUR AROUND 710 PM MDT... SQUAW BUTTE AROUND 715 PM MDT. LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. TAKE SHELTER INSIDE A BUILDING OR VEHICLE WHEN THUNDERSTORMS APPROACH. LIGHTNING CAN OCCUR 15 MILES OR MORE AWAY FROM THE CENTER OF A STORM. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. LAT...LON 4422 11608 4380 11605 4375 11642 4419 11644 TIME...MOT...LOC 0011Z 081DEG 7KT 4419 11616 4378 11616 BW
Local storm report, Sep 12, 6:29 PM MDT, 3 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 Boise, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 12, 6:11 PM MDT | Special Weather Statement | BOI | Gem | 64 min |
| Sep 12, 6:55 PM MDT | Areal Flood Advisory | BOI | Ada, Elmore, Owyhee | 3 hr |
| Sep 12, 7:45 PM MDT | Areal Flood Advisory | BOI | Elmore | 3 hr |
| Sep 13, 3:36 AM MDT | Flash Flood Watch | BOI | Adams, Boise, Camas, Elmore, Gem, Owyhee and 3 more | 19 hr |
| Sep 13, 2:37 PM MDT | Special Weather Statement | BOI | Elmore | 83 min |
| Sep 13, 4:03 PM MDT | Areal Flood Advisory | BOI | Camas, Elmore | 3 hr |
| Sep 13, 5:24 PM MDT | Areal Flood Advisory | BOI | Adams, Boise, Gem, Valley | 3 hr |
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.