Alert archive / Arkansas / Frost Advisories in 2013

Frost Advisory 2, NWS Little Rock, AR

April 18, 20137 counties in Arkansas

NWS Little Rock, AR issued this frost advisory at Apr 18, 2013, 2:27 PM CDT for 7 counties in Arkansas. It took effect at Apr 19, 2013, 1:00 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Apr 18, 2013, 2:27 PM CDT (19:27 UTC)
In effect from: Apr 19, 2013, 1:00 AM CDT
Expired: Apr 18, 2013, 9:35 PM CDT
In force
Issued by: NWS Little Rock, AR

Counties Cleburne County, AR, Conway County, AR, Faulkner County, AR, Fulton County, AR, Independence County, AR, Perry County, AR, Sharp County, AR

The radar

The Little Rock radar (KLZK), 86 km from the middle of the area, began a volume at 19:26 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

Springfield, MO (KSGF), launched 12:00Z, 7.5 hours before the alert went out and 209 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: 13 J/kg
Mixed-layer CIN: -167 J/kg
Mixed-layer LCL: 1125 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 220 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 Little Rock, AR wrote its last area forecast discussion before this frost advisory went out at Apr 18, 2:03 PM CDT, 24 minutes earlier.

Area forecast discussion, Apr 18, 2:03 PM CDT, 24 minutes before

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Hazardous weather outlook, Apr 18, 1:30 PM CDT, 57 minutes before

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In the hours before

Special weather statement, Apr 18, 12:01 PM CDT, 2 hours 26 minutes before

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Special weather statement, Apr 18, 12:07 PM CDT, 2 hours 20 minutes before

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Special weather statement, Apr 18, 12:44 PM CDT, 1 hour 43 minutes before

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Special weather statement, Apr 18, 1:32 PM CDT, 55 minutes before

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Special weather statement, Apr 18, 2:00 PM CDT, 27 minutes before

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Special weather statement, Apr 18, 2:11 PM CDT, 16 minutes before

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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
Apr 18, 6:54 AM CDT	Special Weather Statement	LZK	Logan	61 min
Apr 18, 7:07 AM CDT	Tornado Warning	LZK	Boone	8 min
Apr 18, 7:53 AM CDT	Special Weather Statement	LZK	Boone, Marion, Newton, Searcy	47 min
Apr 18, 8:34 AM CDT	Severe Thunderstorm Warning	LZK	Baxter, Fulton, Izard, Marion, Pope, Searcy and 2 more	41 min
Apr 18, 9:05 AM CDT	Special Weather Statement	LZK	Pope, Van Buren	45 min
Apr 18, 9:12 AM CDT	Severe Thunderstorm Warning	LZK	Baxter, Fulton, Independence, Izard, Marion, Searcy and 2 more	48 min
Apr 18, 9:39 AM CDT	Special Weather Statement	LZK	Montgomery	46 min
Apr 18, 9:50 AM CDT	Severe Thunderstorm Warning	LZK	Baxter, Fulton, Izard, Sharp, Stone	40 min
Apr 18, 9:51 AM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Faulkner, Van Buren, White	24 min
Apr 18, 9:55 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Pike	50 min
Apr 18, 11:54 AM CDT	Special Weather Statement	LZK	Faulkner	46 min
Apr 18, 12:01 PM CDT	Special Weather Statement	LZK	Pulaski	44 min
Apr 18, 12:07 PM CDT	Special Weather Statement	LZK	Grant	43 min
Apr 18, 12:19 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, White	26 min
Apr 18, 12:33 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Clark, Cleveland, Dallas, Grant, Ouachita	57 min
Apr 18, 12:35 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Sharp	40 min
Apr 18, 12:36 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Pulaski, White	39 min
Apr 18, 12:44 PM CDT	Special Weather Statement	LZK	White	46 min
Apr 18, 1:32 PM CDT	Special Weather Statement	LZK	Jefferson	43 min
Apr 18, 2:00 PM CDT	Special Weather Statement	LZK	Prairie	45 min
Apr 18, 2:11 PM CDT	Special Weather Statement	LZK	Jefferson	29 min
Apr 18, 2:27 PM CDT	Frost Advisory	LZK	Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 28 more	36 hr
Apr 18, 2:27 PM CDT	Freeze Warning	LZK	Baxter, Izard, Marion, Stone	7 hr
Apr 18, 2:27 PM CDT	Freeze Warning	LZK	Baxter, Cleburne, Conway, Fulton, Izard, Marion and 2 more	13 hr

Nearby

Frost Advisories in Arkansas, 2013 Every frost advisory in 2013

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.