Alert archive / Texas / Areal Flood Warnings in 2012

Areal Flood Warning 1, NWS Amarillo, TX

April 11, 2012Moore County, Texas

NWS Amarillo, TX issued this areal flood warning at Apr 11, 2012, 11:17 PM CDT for Moore County, Texas. It was in force for 12 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: Apr 11, 2012, 11:17 PM CDT (04:17 UTC)
Expired: Apr 12, 2012, 11:15 AM CDT
In force: 12 hr
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Flood severity: None

County Moore County, TX

The radar

The Amarillo radar (KAMA), 69 km from the middle of the area, began a volume at 04:19 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.3 hours before the alert went out and 70 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: 706 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1480 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Amarillo, TX wrote its last area forecast discussion before this areal flood warning went out at Apr 11, 6:45 PM CDT, 4 hours 32 minutes earlier.

Area forecast discussion, Apr 11, 6:45 PM CDT, 4 hours 32 minutes before

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Hazardous weather outlook, Apr 11, 3:15 PM CDT, 8 hours 2 minutes before

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In the hours before

Special weather statement, Apr 11, 6:20 PM CDT, 4 hours 57 minutes before

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Local storm report, Apr 11, 6:31 PM CDT, 4 hours 46 minutes before

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Local storm report, Apr 11, 6:40 PM CDT, 4 hours 37 minutes before

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Special weather statement, Apr 11, 6:45 PM CDT, 4 hours 32 minutes before

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Local storm report, Apr 11, 6:51 PM CDT, 4 hours 26 minutes before

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Local storm report, Apr 11, 6:55 PM CDT, 4 hours 22 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
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      </p>
      <p id="message2">
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The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 11, 7:03 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Sherman	57 min
Apr 11, 7:05 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Moore, Sherman	42 min
Apr 11, 7:18 PM CDT	Areal Flood Advisory	AMA	Moore, Sherman	4 hr
Apr 11, 7:25 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	65 min
Apr 11, 7:39 PM CDT	Tornado Warning	AMA	Carson, Hutchinson	22 min
Apr 11, 8:12 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	2 hr
Apr 11, 8:40 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	38 min
Apr 11, 11:57 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Moore	63 min
Apr 12, 12:20 AM CDT	Areal Flood Advisory	AMA	Moore	4 hr
Apr 12, 11:04 AM CDT	Areal Flood Warning	AMA	Moore	8 hr

Nearby

Areal Flood Warnings in Texas, 2012 Every areal flood warning 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.