Alert archive / Oklahoma / Special Weather Statements in 2017

Special Weather Statement, NWS Tulsa, OK

May 10, 2017Pittsburg County, Oklahoma

NWS Tulsa, OK issued this special weather statement at May 10, 2017, 3:20 PM CDT for Pittsburg County, Oklahoma. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 10, 2017, 3:20 PM CDT (20:20 UTC)
Expired
May 10, 2017, 3:45 PM CDT
In force
25 min
Issued by
NWS Tulsa, OK

County Pittsburg County, OK

The radar

The Norman radar (KTLX), 131 km from the middle of the area, began a volume at 20:24 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

Norman, OK (KOUN), launched 12:00Z, 8.3 hours before the alert went out and 137 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, Norman, OK at 12:00Z on 2017-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 614 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, Norman, OK at 12:00Z on 2017-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 square meters per square second.19395878Sfc1 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
614 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
611 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 10, 12:48 PM CDT, 2 hours 32 minutes earlier.

Area forecast discussion, May 10, 12:48 PM CDT, 2 hours 32 minutes before
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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, May 10, 1:10 PM CDT, 2 hours 10 minutes before
Hazardous Weather Outlook
National Weather Service Tulsa OK
110 PM CDT Wed May 10 2017

ARZ001-002-010-011-019-020-029-OKZ049-053>076-111015-
Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
Washington OK-Washington AR-
110 PM CDT Wed May 10 2017

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...This afternoon and Tonight.

SEVERE THUNDERSTORM.
	RISK...Limited.
	AREA...Northeast Oklahoma along/north of I-44.
 	ONSET...This Afternoon.

DISCUSSION...

A moist and unstable air-mass will allow scattered showers and
thunderstorms to develop this afternoon. A few storms could approach
severe limits along and north of I-44 with large hail and damaging
winds.

Later tonight...storms that develop to the north along a cold front
may enter northeast Oklahoma late tonight. Severe weather appears
unlikely with this activity.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... Local Spotter
Activation May Be Needed.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
THURSDAY...Severe Thunderstorm Potential...Heavy Rain Potential.
FRIDAY Through SUNDAY...No Hazards. MONDAY and
TUESDAY...Thunderstorm Potential.

EXTENDED DISCUSSION... Thunderstorms on Thursday will be focused on
the cold front and upper system that will move through the area
during the day and evening. Storms will increases in areal coverage
during the afternoon along the front...with the highest coverage
expected across far eastern Oklahoma and northwest Arkansas as these
locations will have the greatest instability in place. Any severe
storm will be capable of producing large hail and damaging winds.
Severe weather chances will diminish by late evening as the frontal
boundary pushes east. However...storm chances will likely linger
during the overnight hours as the lagging upper system clears the
area.

After a dry weekend that will see moderating temperatures... another
upper low will moves into the northwest United States and increase
thunderstorm chances for the plains by early next work week.

weather.gov/tulsa Contains additional information.

In the hours before

Special weather statement, May 10, 3:20 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Tulsa OK
320 PM CDT WED MAY 10 2017

OKZ073-102045-
Pittsburg OK-
320 PM CDT WED MAY 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN PITTSBURG COUNTY
UNTIL 345 PM CDT...

At 320 PM CDT, a strong thunderstorm was located 6 miles southwest of
Ashland, moving northeast at 40 mph.

Nickel size hail will be possible with this storm.

Locations in or near the path include...
Mcalester...                      Kiowa...
Savanna...                        Ashland...
Haywood...                        Arpelar...

LAT...LON 3489 9609 3505 9589 3484 9568 3468 9598
      3468 9609
TIME...MOT...LOC 2020Z 231DEG 35KT 3471 9616

Lacy

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 3:36 PM CDTSpecial Weather StatementTSAOkfuskee24 min
May 10, 3:46 PM CDTSpecial Weather StatementTSAKay29 min
May 10, 3:56 PM CDTSevere Thunderstorm WarningTSAOsage34 min
May 10, 4:00 PM CDTSpecial Weather StatementTSAOkmulgee30 min
May 10, 4:04 PM CDTSpecial Weather StatementTSAPittsburg26 min
May 10, 4:25 PM CDTSevere Thunderstorm WarningTSAOsage35 min
May 10, 4:27 PM CDTSpecial Weather StatementTSAKay33 min
May 10, 5:03 PM CDTSpecial Weather StatementTSAPittsburg27 min
May 10, 5:35 PM CDTAreal Flood AdvisoryTSAOsage3 hr
May 10, 5:48 PM CDTSpecial Weather StatementTSAOttawa27 min

Nearby

Special Weather Statements in Oklahoma, 2017Every special weather statement in 2017

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.