Alert archive / Oklahoma / Freeze Watches in 2011

Freeze Watch 3, NWS Tulsa, OK

October 18, 201122 counties in Oklahoma; 4 counties in Arkansas

NWS Tulsa, OK issued this freeze watch at Oct 18, 2011, 4:10 PM CDT for 22 counties in Oklahoma; 4 counties in Arkansas. It took effect at Oct 20, 2011, 1:00 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Oct 18, 2011, 4:10 PM CDT (21:10 UTC)
In effect from: Oct 20, 2011, 1:00 AM CDT
Expired: Oct 19, 2011, 3:50 AM CDT
In force
Issued by: NWS Tulsa, OK

All 26 counties

Benton County, AR, Carroll County, AR, Madison County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Pawnee County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 42 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

Lamont, OK (KLMN), launched 12:00Z, 9.2 hours before the alert went out and 214 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1166 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -110 m²/s²
0-3 km storm-relative helicity: -58 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 freeze watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this freeze watch went out at Oct 18, 4:02 PM CDT, 8 minutes earlier.

Area forecast discussion, Oct 18, 4:02 PM CDT, 8 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, Oct 18, 12:56 PM CDT, 3 hours 14 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 Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 17, 7:11 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okfuskee, Okmulgee	64 min
Oct 17, 7:19 PM CDT	Special Weather Statement	TSA	Creek	41 min
Oct 17, 7:46 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	59 min
Oct 17, 7:53 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Muskogee, Okmulgee, Tulsa, Wagoner	26 min
Oct 17, 8:37 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg	38 min
Oct 17, 8:51 PM CDT	Special Weather Statement	TSA	Craig, Nowata, Ottawa	39 min
Oct 17, 9:01 PM CDT	Special Weather Statement	TSA	Choctaw, Pushmataha	59 min
Oct 17, 9:17 PM CDT	Special Weather Statement	TSA	Haskell, Latimer, LeFlore	28 min
Oct 17, 9:44 PM CDT	Special Weather Statement	TSA	Choctaw, LeFlore, Pushmataha	46 min
Oct 17, 10:31 PM CDT	Special Weather Statement	TSA	LeFlore	44 min
Oct 18, 12:45 AM CDT	Special Weather Statement	TSA	Latimer	30 min
Oct 17, 7:43 PM CDT	Special Weather Statement	TSA	Benton	47 min
Oct 17, 8:25 PM CDT	Special Weather Statement	TSA	Benton	65 min
Oct 17, 9:39 PM CDT	Special Weather Statement	TSA	Carroll	51 min
Oct 17, 10:35 PM CDT	Special Weather Statement	TSA	Carroll, Madison	40 min

Nearby

Freeze Watches in Oklahoma, 2011 Freeze Watches in Arkansas, 2011 Every freeze watch in 2011

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.