Alert archive / Nebraska / Fire Weather Watches in 2012

Fire Weather Watch 11, NWS North Platte, NE

March 17, 20125 counties in Nebraska

NWS North Platte, NE issued this fire weather watch at Mar 17, 2012, 3:55 PM CDT for 5 counties in Nebraska. It took effect at Mar 18, 2012, 12:00 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued
Mar 17, 2012, 3:55 PM CDT (20:55 UTC)
In effect from
Mar 18, 2012, 12:00 PM CDT
Expired
Mar 18, 2012, 4:24 AM CDT
In force
Issued by
NWS North Platte, NE

Counties Custer County, NE, Garfield County, NE, Holt County, NE, Loup County, NE, Wheeler County, NE

The radar

The North Platte radar (KLNX), 122 km from the middle of the area, began a volume at 20:54 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

Aberdeen, SD (KABR), launched 12:00Z, 8.9 hours before the alert went out and 336 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, Aberdeen, SD at 12:00Z on 2012-03-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 180 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2012-03-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 142 square meters per square second.1939Sfc1 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
180 J/kg
Mixed-layer CIN
-449 J/kg
Mixed-layer LCL
1774 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
142 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 17, 3:49 AM CDTHigh Wind WatchLBFArthur, Blaine, Brown, Chase, Cherry, Deuel and 13 more24 hr
Mar 17, 4:11 AM CDTRed Flag WarningLBFArthur, Blaine, Boyd, Brown, Chase, Cherry and 16 more16 hr
Mar 17, 3:55 PM CDTRed Flag WarningLBFArthur, Blaine, Boyd, Brown, Chase, Cherry and 20 more31 hr

Nearby

Fire Weather Watches in Nebraska, 2012Every fire weather watch in 2012

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.