Alert archive / Oklahoma / Flood Watches in 2016

Flood Watch 1, NWS Norman, OK

April 15, 201648 counties in Oklahoma; 8 counties in Texas

NWS Norman, OK issued this flood watch at Apr 15, 2016, 11:55 AM CDT for 48 counties in Oklahoma; 8 counties in Texas. It took effect at Apr 16, 2016, 7:00 PM CDT. It was in force for 33 hr.

The area

The counties it named.

The facts

Issued: Apr 15, 2016, 11:55 AM CDT (16:55 UTC)
In effect from: Apr 16, 2016, 7:00 PM CDT
Expired: Apr 18, 2016, 3:49 AM CDT
In force: 33 hr
Issued by: NWS Norman, OK
Flood severity: None

All 56 counties

Alfalfa County, OK, Atoka County, OK, Beckham County, OK, Blaine County, OK, Bryan County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Hughes County, OK, Jackson County, OK, Jefferson County, OK, Johnston County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Major County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Roger Mills County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Norman radar (KTLX), 81 km from the middle of the area, began a volume at 16:53 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 12:00Z, 4.9 hours before the alert went out and 326 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: 1416 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 195 m²/s²
0-3 km storm-relative helicity: 293 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 flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this flood watch went out at Apr 15, 6:34 AM CDT, 5 hours 21 minutes earlier.

Area forecast discussion, Apr 15, 6:34 AM CDT, 5 hours 21 minutes before

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Hazardous weather outlook, Apr 15, 4:59 AM CDT, 6 hours 56 minutes before

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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 15, 8:07 AM CDT	Dense Fog Advisory	OUN	Caddo, Comanche, Cotton, Greer, Harmon, Jackson and 3 more	113 min

Nearby

Flood Watches in Oklahoma, 2016 Flood Watches in Texas, 2016 Every flood watch in 2016

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.