Alert archive / Colorado / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 324, NWS Goodland, KS

August 27, 2014Yuma County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Aug 27, 2014, 9:10 PM MDT for Yuma County, Colorado. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 27, 2014, 9:10 PM MDT (03:10 UTC)
Expired: Aug 27, 2014, 9:47 PM MDT
In force: 37 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Yuma County, CO

The radar

The Goodland radar (KGLD), 94 km from the middle of the area, began a volume at 03:13 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

Denver, CO (KDEN), launched 00:00Z, 3.2 hours before the alert went out and 70 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 81 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 1662 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Aug 27, 8:46 PM MDT, 24 minutes earlier.

Area forecast discussion, Aug 27, 8:46 PM MDT, 24 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 27, 8:42 PM MDT, 28 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>

In the hours before

Local storm report, Aug 27, 6:30 PM MDT, 2 hours 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
630 PM MDT WED AUG 27 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0629 PM     FLASH FLOOD      MORLAND                 39.35N 100.07W
08/27/2014                   GRAHAM             KS   LAW ENFORCEMENT

            WATER 3-6 INCHES DEEP ON ROADS IN MORLAND. APPROXIMATELY
            3 FEET OF WATER COVERING ROAD BETWEEN MORLAND AND HIGHWAY
            24.

&&

JJM

Special weather statement, Aug 27, 7:20 PM MDT, 1 hour 50 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
820 PM CDT WED AUG 27 2014

KSZ004-016-280215-
NORTON KS-GRAHAM KS-
820 PM CDT WED AUG 27 2014

...SIGNIFICANT WEATHER ADVISORY FOR GRAHAM AND NORTON COUNTIES UNTIL
915 PM CDT...

AT 818 PM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR LENORA TO BOGUE...AND
MOVING NORTHEAST AT 25 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THESE STORMS. TORRENTIAL RAIN WITH THESE STORMS WILL ALSO LEAD TO
VISIBILITIES NEAR ZERO...AND MAY LEAD TO LOCALIZED FLASH FLOODING.

LOCATIONS IMPACTED INCLUDE...
NORTON...HILL CITY...ALMENA...LENORA...BOGUE...NICODEMUS...EDMOND...
CALVERT...DENSMORE...PENOKEE AND NEW ALMELO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3923 10003 3966 10016 3980 10006 3999 9963
      3957 9963 3957 9960 3925 9961
TIME...MOT...LOC 0118Z 235DEG 27KT 3964 9994 3935 9972

DR

Special weather statement, Aug 27, 7:54 PM MDT, 1 hour 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
754 PM MDT WED AUG 27 2014

COZ090-091-280230-
YUMA COUNTY CO-KIT CARSON COUNTY CO-
754 PM MDT WED AUG 27 2014

...SIGNIFICANT WEATHER ADVISORY FOR YUMA AND NORTHWESTERN KIT CARSON
COUNTIES UNTIL 830 PM MDT...

AT 750 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR HIGHLAND CENTER TO 6
MILES SOUTH OF THURMAN...AND MOVING EAST AT 20 MPH.

NICKEL SIZE HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE
WITH MOST OF THESE STORMS. BE PREPARED FOR THE POSSIBILITY OF SEVERE
THUNDERSTORMS WITHIN THIS LINE.

LOCATIONS IMPACTED INCLUDE...
YUMA...WRAY...ECKLEY...CLARKVILLE...ABARR...KIRK...JOES...
HEARTSTRONG...VERNON...IDALIA AND WAUNETA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4044 10207 3934 10234 3931 10315 3957 10315
      3957 10280 4044 10278
TIME...MOT...LOC 0150Z 269DEG 16KT 4051 10253 3951 10324

DR

Special weather statement, Aug 27, 8:18 PM MDT, 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
918 PM CDT WED AUG 27 2014

KSZ016-280230-
GRAHAM KS-
918 PM CDT WED AUG 27 2014

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN GRAHAM AND SOUTHEASTERN
NORTON COUNTIES UNTIL 930 PM CDT...

AT 918 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
BOGUE...MOVING NORTHEAST AT 35 MPH.

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

LOCATIONS IMPACTED INCLUDE...
BOGUE AND NICODEMUS.

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.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3917 9980 3952 9979 3957 9964 3957 9960
      3924 9961
TIME...MOT...LOC 0218Z 241DEG 30KT 3935 9964

DR

Local storm report, Aug 27, 8:49 PM MDT, 21 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>

Local storm report, Aug 27, 9:08 PM MDT, 2 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 Goodland, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 27, 6:24 PM MDT	Special Weather Statement	GLD	Decatur, Graham, Norton, Rawlins, Sheridan, Thomas	36 min
Aug 27, 6:48 PM MDT	Flash Flood Warning	GLD	Thomas	3 hr
Aug 27, 7:20 PM MDT	Special Weather Statement	GLD	Graham, Norton	55 min
Aug 27, 8:18 PM MDT	Special Weather Statement	GLD	Graham	12 min
Aug 27, 8:35 PM MDT	Flash Flood Watch	GLD	Cheyenne, Decatur, Gove, Graham, Logan, Norton and 5 more	9 hr
Aug 27, 10:36 PM MDT	Areal Flood Warning	GLD	Graham, Norton	6 hr
Aug 28, 4:11 PM MDT	Special Weather Statement	GLD	Cheyenne	64 min
Aug 28, 4:57 PM MDT	Special Weather Statement	GLD	Cheyenne	48 min
Aug 28, 5:20 PM MDT	Special Weather Statement	GLD	Cheyenne, Rawlins	55 min
Aug 27, 7:54 PM MDT	Special Weather Statement	GLD	Yuma	36 min
Aug 27, 8:15 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	60 min
Aug 27, 9:13 PM MDT	Special Weather Statement	GLD	Yuma	62 min
Aug 27, 9:50 PM MDT	Special Weather Statement	GLD	Yuma	40 min
Aug 27, 10:28 PM MDT	Special Weather Statement	GLD	Yuma	47 min
Aug 27, 11:41 PM MDT	Special Weather Statement	GLD	Yuma	19 min
Aug 28, 5:00 PM MDT	Special Weather Statement	GLD	Hitchcock	45 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2014 Every severe thunderstorm warning in 2014

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.