Alert archive / Arkansas / Freeze Warnings in 2017

Freeze Warning 2, NWS Little Rock, AR

March 11, 201720 counties in Arkansas

NWS Little Rock, AR issued this freeze warning at Mar 11, 2017, 2:46 AM CST for 20 counties in Arkansas. It took effect at Mar 12, 2017, 12:00 AM CST. It was in force for 8 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: Mar 11, 2017, 2:46 AM CST (08:46 UTC)
In effect from: Mar 12, 2017, 12:00 AM CST
Expired: Mar 12, 2017, 9:00 AM CDT
In force: 8 hr
Issued by: NWS Little Rock, AR

Counties Baxter County, AR, Cleburne County, AR, Conway County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Lonoke County, AR, Marion County, AR, Monroe County, AR, Perry County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Sharp County, AR, Stone County, AR, White County, AR, Woodruff County, AR

The radar

The Little Rock radar (KLZK), 66 km from the middle of the area, began a volume at 08:49 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

Little Rock, AR (KBYH), launched 00:00Z, 8.8 hours before the alert went out and 201 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: 1693 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 208 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 warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this freeze warning went out at Mar 10, 11:35 PM CST, 3 hours 11 minutes earlier.

Area forecast discussion, Mar 10, 11:35 PM CST, 3 hours 11 minutes before

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Hazardous weather outlook, Mar 10, 4:15 PM CST, 10 hours 31 minutes before

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In the hours before

Special weather statement, Mar 11, 2:15 AM CST, 31 minutes before

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<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.
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        Please try again in a few minutes.
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The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 11, 1:37 PM CST	Winter Weather Advisory	LZK	Baxter, Fulton, Izard, Marion, Sharp, Stone	7 hr

Nearby

Freeze Warnings in Arkansas, 2017 Every freeze warning in 2017

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.