Alert archive / Colorado / Special Weather Statements in 2015

Special Weather Statement, NWS Goodland, KS

August 8, 2015Cheyenne County, Colorado

NWS Goodland, KS issued this special weather statement at Aug 8, 2015, 3:08 PM MDT for Cheyenne County, Colorado. It was in force for 22 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 8, 2015, 3:08 PM MDT (21:08 UTC)
Expired
Aug 8, 2015, 3:30 PM MDT
In force
22 min
Issued by
NWS Goodland, KS

County Cheyenne County, CO

The radar

The Goodland radar (KGLD), 103 km from the middle of the area, began a volume at 21:10 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

Dodge City, (KDDC), launched 12:00Z, 9.1 hours before the alert went out and 283 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, Dodge City, at 12:00Z on 2015-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 257 joules per kilogram.LCLLFCEL10008507005003002001001 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, Dodge City, at 12:00Z on 2015-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.193958Sfc1 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
257 J/kg
Mixed-layer CIN
-300 J/kg
Mixed-layer LCL
2087 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

<!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>

What forecasters said that day

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

NWS Goodland, KS wrote its last area forecast discussion before this special weather statement went out at Aug 8, 2:29 PM MDT, 39 minutes earlier.

Area forecast discussion, Aug 8, 2:29 PM MDT, 39 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, Aug 8, 2:47 PM MDT, 21 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GOODLAND KS
247 PM MDT SAT AUG 8 2015

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-092100-
YUMA-KIT CARSON-CHEYENNE CO-CHEYENNE KS-RAWLINS-DECATUR-NORTON-
SHERMAN-THOMAS-SHERIDAN-GRAHAM-WALLACE-LOGAN-GOVE-GREELEY-WICHITA-
DUNDY-HITCHCOCK-RED WILLOW-
247 PM MDT SAT AUG 8 2015 /347 PM CDT SAT AUG 8 2015/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL COLORADO...
EXTREME SOUTHWEST NEBRASKA AND NORTHWEST KANSAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

ISOLATED THUNDERSTORMS WILL DEVELOP LATE THIS AFTERNOON ACROSS
EASTERN COLORADO AND WESTERN KANSAS...WITH COVERAGE INCREASING
OVER NORTHWEST KANSAS AS ACTIVITY SPREADS NORTHEAST. THE BEST
CHANCE FOR SEVERE THUNDERSTORMS WILL BE ALONG AND SOUTH OF
INTERSTATE 70. THE MAIN THREATS WITH ANY STORMS THAT BECOME SEVERE
ARE DAMAGING WINDS UP TO 70 MPH...LARGE HAIL IN EXCESS OF 2
INCHES...AND HEAVY RAIN THAT MAY PRODUCE LOCALIZED FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE EACH DAY FROM
SUNDAY THROUGH THE MIDDLE OF NEXT WEEK. THE BEST CHANCE FOR SEVERE
THUNDERSTORMS DURING THESE PERIODS WILL BE SUNDAY AFTERNOON AND
EVENING WITH LARGE HAIL...DAMAGING WINDS...AND LOCALLY HEAVY
RAINFALL THE MAIN THREATS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING.

In the hours before

Local storm report, Aug 8, 9:38 AM MDT, 5 hours 30 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, Aug 8, 3:08 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
308 PM MDT SAT AUG 8 2015

COZ092-082130-
CHEYENNE COUNTY CO-
308 PM MDT SAT AUG 8 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHEYENNE COUNTY
UNTIL 330 PM MDT...

AT 307 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9
MILES NORTH OF KIT CARSON...OR 24 MILES WEST OF CHEYENNE WELLS...
MOVING NORTHEAST AT 10 MPH.

DIME SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS
STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTHWESTERN
CHEYENNE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3904 10281 3904 10264 3889 10254 3880 10286
      3892 10295
TIME...MOT...LOC 2107Z 226DEG 8KT 3890 10278

HUSTED

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 6:19 PM MDTSevere Thunderstorm WarningGLDLogan, Wichita56 min
Aug 7, 6:27 PM MDTSpecial Weather StatementGLDWallace63 min
Aug 7, 6:34 PM MDTSpecial Weather StatementGLDSherman41 min
Aug 7, 6:36 PM MDTSevere Thunderstorm WarningGLDLogan, Wallace, Wichita39 min
Aug 7, 6:51 PM MDTSevere Thunderstorm WarningGLDGove, Logan, Sheridan, Sherman, Thomas54 min
Aug 7, 7:20 PM MDTSevere Thunderstorm WarningGLDCheyenne, Rawlins, Sherman, Thomas55 min
Aug 7, 7:33 PM MDTSevere Thunderstorm WarningGLDCheyenne, Decatur, Gove, Logan, Rawlins, Sheridan and 1 more57 min
Aug 7, 8:04 PM MDTSevere Thunderstorm WarningGLDCheyenne, Decatur, Rawlins56 min
Aug 7, 8:09 PM MDTSevere Thunderstorm WarningGLDDecatur, Gove, Graham, Norton, Rawlins, Sheridan66 min
Aug 7, 8:16 PM MDTSevere Thunderstorm WarningGLDCheyenne59 min
Aug 7, 8:52 PM MDTSevere Thunderstorm WarningGLDCheyenne, Decatur, Norton, Rawlins53 min
Aug 7, 9:04 PM MDTSevere Thunderstorm WarningGLDDecatur, Gove, Graham, Norton, Sheridan56 min
Aug 7, 11:27 PM MDTSevere Thunderstorm WarningGLDGraham, Norton37 min
Aug 8, 12:06 AM MDTSpecial Weather StatementGLDNorton39 min
Aug 8, 4:43 PM MDTSevere Thunderstorm WarningGLDWallace52 min
Aug 8, 5:34 PM MDTSpecial Weather StatementGLDWallace26 min
Aug 8, 5:49 PM MDTSpecial Weather StatementGLDWichita26 min
Aug 7, 6:49 PM MDTSevere Thunderstorm WarningGLDYuma56 min
Aug 7, 7:03 PM MDTTornado WarningGLDYuma27 min
Aug 7, 7:33 PM MDTSevere Thunderstorm WarningGLDYuma57 min
Aug 8, 3:29 PM MDTSpecial Weather StatementGLDCheyenne16 min
Aug 8, 3:43 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson47 min
Aug 8, 4:10 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson52 min
Aug 8, 4:25 PM MDTSpecial Weather StatementGLDKit Carson35 min
Aug 8, 4:51 PM MDTSevere Thunderstorm WarningGLDKit Carson39 min
Aug 8, 5:16 PM MDTSevere Thunderstorm WarningGLDKit Carson44 min
Aug 7, 6:52 PM MDTSpecial Weather StatementGLDDundy53 min
Aug 7, 7:29 PM MDTTornado WarningGLDDundy31 min
Aug 7, 8:00 PM MDTSevere Thunderstorm WarningGLDDundy60 min
Aug 7, 8:47 PM MDTFlash Flood WarningGLDHitchcock6 hr
Aug 7, 9:25 PM MDTSpecial Weather StatementGLDDundy50 min
Aug 7, 9:30 PM MDTSevere Thunderstorm WarningGLDDundy14 min

Nearby

Special Weather Statements in Colorado, 2015Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.