Alert archive / Montana / River Flood Warnings in 2008

River Flood Warning 15, NWS Missoula, MT

May 21, 2008Missoula County, Montana

NWS Missoula, MT issued this river flood warning at May 21, 2008, 5:18 AM MDT for Missoula County, Montana. It took effect at May 23, 2008, 11:25 PM MDT. It was in force for .

The area

The counties it named.

The facts

Issued: May 21, 2008, 5:18 AM MDT (11:18 UTC)
In effect from: May 23, 2008, 11:25 PM MDT
Expired: May 21, 2008, 9:39 AM MDT
In force
Issued by: NWS Missoula, MT
Flood severity: Minor

County Missoula County, MT

The radar

The Missoula radar (KMSX), 5 km from the middle of the area, began a volume at 11:17 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 Clark Fork River above Missoula (ABOM8). The gauge peaked at 9.48 ft at May 21, 2008, 11:00 PM MDT.

Action stage: 7 ft
Minor stage: 7.5 ft
Moderate stage: 11 ft
Major stage: 13 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12340500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

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 Missoula, MT wrote its last area forecast discussion before this river flood warning went out at May 21, 4:05 AM MDT, 1 hour 13 minutes earlier.

Area forecast discussion, May 21, 4:05 AM MDT, 1 hour 13 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, May 20, 12:59 PM MDT, 16 hours 19 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MISSOULA MT
1259 PM MDT TUE MAY 20 2008

MTZ002-043-211130-
WEST GLACIER REGION-POTOMAC/SEELEY LAKE REGION-
1259 PM MDT TUE MAY 20 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
MONTANA AND WEST CENTRAL MONTANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A PACIFIC COLD FRONT WILL SWEEP ACROSS THE REGION LATE THIS AFTERNOON
AND TONIGHT PRODUCING STRONG GUSTY WINDS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A VERY MOIST SOUTHEASTERLY FLOW IS EXPECTED TO DEVELOP WEDNESDAY
NIGHT AND CONTINUE INTO FRIDAY. THIS FLOW MAY PRODUCE MODERATE TO
HEAVY AMOUNTS OF PRECIPITATION...ESPECIALLY ALONG THE CONTINENTAL
DIVIDE AND THE HIGHER TERRAIN FROM GLACIER PARK SOUTHWARD TO THE
SEELEY REGION. SNOW LEVELS WILL BE NEAR 6000 FEET THURSDAY AND
THURSDAY NIGHT WITH SIGNIFICANT SNOW ACCUMULATION POSSIBLE AT THE
HIGHER ELEVATIONS. HOWEVER...IN THE LOWER ELEVATIONS...THE
MODERATE TO HEAVY RAIN MAY AGAIN PRODUCE A SIGNIFICANT INCREASE TO
STREAM AND RIVER FLOWS.

.SPOTTER INFORMATION STATEMENT...

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

The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 20, 6:15 PM MDT	Severe Thunderstorm Warning	MSO	Silver Bow	30 min
May 20, 11:21 PM MDT	Severe Thunderstorm Warning	MSO	Deer Lodge, Granite, Powell, Silver Bow	39 min
May 21, 3:07 AM MDT	Flood Watch	MSO	Flathead, Powell	4 days
May 21, 12:14 PM MDT	River Flood Warning	MSO	Ravalli	2 hr
May 21, 12:14 PM MDT	River Flood Warning	MSO	Flathead	5 hr
May 21, 12:14 PM MDT	River Flood Warning	MSO	Flathead	5 hr
May 21, 12:14 PM MDT	River Flood Warning	MSO	Flathead	5 hr
May 21, 12:16 AM MDT	Severe Thunderstorm Warning	MSO	Lemhi	50 min

Nearby

River Flood Warnings in Montana, 2008 Every river flood warning in 2008

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.