Alert archive / North Dakota / Frost Advisories in 2014

Frost Advisory 5, NWS Bismarck, ND

September 11, 20149 counties in North Dakota

NWS Bismarck, ND issued this frost advisory at Sep 11, 2014, 2:40 PM CDT for 9 counties in North Dakota. It took effect at Sep 12, 2014, 1:00 AM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Sep 11, 2014, 2:40 PM CDT (19:40 UTC)
In effect from: Sep 12, 2014, 1:00 AM CDT
Expired: Sep 12, 2014, 9:03 AM CDT
In force: 8 hr
Issued by: NWS Bismarck, ND

Counties Dickey County, ND, Emmons County, ND, Foster County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Stutsman County, ND, Wells County, ND

The radar

The Bismarck radar (KBIS), 113 km from the middle of the area, began a volume at 19:39 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

Rapid City, SD (KRAP), launched 12:00Z, 7.7 hours before the alert went out and 407 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: 478 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: 270 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 frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Bismarck, ND wrote its last area forecast discussion before this frost advisory went out at Sep 10, 6:19 PM CDT, 20 hours 21 minutes earlier.

Area forecast discussion, Sep 10, 6:19 PM CDT, 20 hours 21 minutes before

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Hazardous weather outlook, Sep 10, 3:20 PM CDT, 23 hours 20 minutes before

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<body>
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    <section class="card" role="status" aria-live="polite">
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        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 Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 11, 3:21 AM CDT	Freeze Warning	BIS	Adams, Billings, Bottineau, Bowman, Burke, Burleigh and 17 more	30 hr

Nearby

Frost Advisories in North Dakota, 2014 Every frost advisory 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.