Alert archive / Nebraska / Special Weather Statements in 2017

Special Weather Statement, NWS North Platte, NE

March 6, 20174 counties in Nebraska

NWS North Platte, NE issued this special weather statement at Mar 6, 2017, 2:09 PM MST for 4 counties in Nebraska. It was in force for 81 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
Mar 6, 2017, 2:09 PM MST (21:09 UTC)
Expired
Mar 6, 2017, 3:30 PM MST
In force
81 min
Issued by
NWS North Platte, NE

Counties Cherry County, NE, Garden County, NE, Grant County, NE, Sheridan County, NE

The radar

The North Platte radar (KLNX), 106 km from the middle of the area, began a volume at 21:13 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.2 hours before the alert went out and 170 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, N. Platte/Lee Bi, NE at 12:00Z on 2017-03-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2017-03-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 217 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2545 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
217 m²/s²
0-3 km storm-relative helicity
229 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 North Platte, NE wrote its last area forecast discussion before this special weather statement went out at Mar 6, 10:36 AM MST, 3 hours 33 minutes earlier.

Area forecast discussion, Mar 6, 10:36 AM MST, 3 hours 33 minutes before
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</head>
<body>
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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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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Hazardous weather outlook, Mar 6, 10:36 AM MST, 3 hours 33 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service North Platte NE
1136 AM CST Mon Mar 6 2017

NEZ004>010-022>029-035>038-056>059-069>071-094-071745-
Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden-
Grant-Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson-
Logan-Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier-
Western Cherry-
1136 AM CST Mon Mar 6 2017 /1036 AM MST Mon Mar 6 2017/

This Hazardous Weather Outlook is for portions of western and
north central Nebraska.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

Strong west winds will develop behind an exiting cold front
this afternoon. Sustained winds of 30 to 40 MPH with gusts up to
60 MPH are expected and a high wind warning is in effect for all
of western and north central Nebraska. Please see the latest
weather message for details in your area.

Critical fire weather conditions are likely this afternoon for
most of western and north central Nebraska. The exception is
across portions of north central Nebraska from Valentine to north
of O'Neill. Minimum relative humidity of 15 to 20 percent is
expected in the critical fire weather area along with strong wind
gusts which may approach 50 to 60 MPH.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

Critical to near critical fire weather conditions are possible
Tuesday afternoon across portions of western and north central
Nebraska. A fire weather watch is in effect Tuesday afternoon for
southwestern into central Nebraska.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

Get your weather, hydrological, and climate information at
http://www.weather.gov/northplatte

In the hours before

Special weather statement, Mar 6, 2:09 PM MST, 0 minutes before
Special Weather Statement
National Weather Service North Platte NE
309 PM CST MON MAR 6 2017

NEZ004-022>024-035-036-094-062230-
Sheridan NE-Hooker NE-Grant NE-Arthur NE-McPherson NE-
Western Cherry NE-Garden NE-
309 PM CST MON MAR 6 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ARTHUR...WESTERN
CHERRY...GRANT...WESTERN HOOKER...NORTHERN GARDEN...NORTHWESTERN
MCPHERSON AND SHERIDAN COUNTIES UNTIL 430 PM CST/330 PM MST/...

At 306 PM CST/206 PM MST/, Doppler radar...weather observations and
public reports indicate strong winds and snow showers along a line
extending from 9 miles west of Merriman to 13 miles east of Crescent
Lake Nwr. Movement was east at 30 mph. This area of harsh weather
extended west across Sheridan and Garden Counties.

Wind gusts of 50 to 55 mph will be possible with these snow showers.
Visibility will fall below 1/4 mile at times. Less than 1 inch of
snow is expected.

Locations impacted include...
Gordon, Rushville, Hay Springs, Ellsworth, Hyannis, Cody, Merriman,
Kilgore, Nenzel, Crescent Lake Nwr, Medicine Lake, Whitman, White
Clay, Ashby, Antioch, Clinton, Dogtown Flats, Billys Lake, Lone Butte
and Highway 250 Crossing The Niobrara River.

This includes the following highways...
 Highway 20 between mile markers 77 and 176.
 Highway 250 between mile markers 1 and 48.
 Highway 2 between mile markers 98 and 180.
 Highway 61 between mile markers 125 and 231.
 Highway 92 between mile markers 165 and 178.

LAT...LON 4300 10092 4158 10121 4157 10262 4300 10277
TIME...MOT...LOC 2106Z 281DEG 25KT 4293 10189 4171 10214

CDC

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 6, 2:32 AM MSTFire Weather WatchLBFChase, Custer, Frontier, Garfield, Hayes, Holt and 4 more11 hr
Mar 6, 1:57 PM MSTRed Flag WarningLBFArthur, Chase, Cherry, Custer, Deuel, Frontier and 11 more28 hr
Mar 6, 3:13 PM MSTSpecial Weather StatementLBFArthur, Cherry, Grant, Hooker, Logan, McPherson and 2 more92 min

Nearby

Special Weather Statements in Nebraska, 2017Every special weather statement 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.