Alert archive / Oklahoma / Flood Watches in 2020

Flood Watch 1, NWS Tulsa, OK

May 16, 20204 counties in Oklahoma

NWS Tulsa, OK issued this flood watch at May 16, 2020, 10:16 AM CDT for 4 counties in Oklahoma. It took effect at May 16, 2020, 1:00 PM CDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: May 16, 2020, 10:16 AM CDT (15:16 UTC)
In effect from: May 16, 2020, 1:00 PM CDT
Expired: May 17, 2020, 2:40 AM CDT
In force: 14 hr
Issued by: NWS Tulsa, OK
Flood severity: None

Counties Choctaw County, OK, Haskell County, OK, Latimer County, OK, Pushmataha County, OK

The radar

The Western Arkansas radar (KSRX), 114 km from the middle of the area, began a volume at 15:19 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

Fort Worth, TX (KFWD), launched 12:00Z, 3.3 hours before the alert went out and 271 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: 15 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 760 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 189 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 Tulsa, OK wrote its last area forecast discussion before this flood watch went out at May 16, 6:09 AM CDT, 4 hours 7 minutes earlier.

Area forecast discussion, May 16, 6:09 AM CDT, 4 hours 7 minutes before

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Hazardous weather outlook, May 16, 4:18 AM CDT, 5 hours 58 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 8:26 PM CDT	River Flood Warning	TSA	Cherokee	30 hr
May 15, 8:27 PM CDT	River Flood Advisory	TSA	Adair, Cherokee, Delaware	24 hr
May 15, 8:46 PM CDT	River Flood Advisory	TSA	Cherokee, Delaware	5 hr
May 15, 9:17 PM CDT	River Flood Warning	TSA	LeFlore	3 days
May 15, 7:26 PM CDT	River Flood Warning	TSA	Crawford, Sebastian	37 hr
May 15, 7:26 PM CDT	River Flood Warning	TSA	Franklin, Johnson, Logan	61 hr

Nearby

Flood Watches in Oklahoma, 2020 Flood Watches in Arkansas, 2020 Every flood watch in 2020

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.