Alert archive / Oklahoma / Special Weather Statements in 2017

Special Weather Statement, NWS Tulsa, OK

May 17, 2017Adair County, Sequoyah County, Oklahoma

NWS Tulsa, OK issued this special weather statement at May 17, 2017, 5:24 AM CDT for Adair County, Sequoyah County, Oklahoma. It was in force for 51 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 17, 2017, 5:24 AM CDT (10:24 UTC)
Expired
May 17, 2017, 6:15 AM CDT
In force
51 min
Issued by
NWS Tulsa, OK

Counties Adair County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 51 km from the middle of the area, began a volume at 10:24 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 00:00Z, 10.4 hours before the alert went out and 227 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 00:00Z on 2017-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 768 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 00:00Z on 2017-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 232 square meters per square second.1939587897Sfc1 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
768 J/kg
Mixed-layer CIN
-307 J/kg
Mixed-layer LCL
953 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
232 m²/s²
0-3 km storm-relative helicity
308 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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 17, 2:52 AM CDT, 2 hours 32 minutes earlier.

Area forecast discussion, May 17, 2:52 AM CDT, 2 hours 32 minutes before
Area Forecast Discussion
National Weather Service Tulsa OK
252 AM CDT Wed May 17 2017

.DISCUSSION...
Band of showers/thunderstorms continues to make progress into the
eastern fringes of our forecast area early this morning. Leading
edge of convection has produced sporadic 40-55 mph
gusts...although expect a gradual decrease in storm intensity over
the next several hours as convection moves into more stable air.
This activity will weaken further by late morning into far eastern
OK/western AR...with only slight chance PoPs remaining in the
afternoon forecast across western AR.

South to southwest winds will push wind advisory criteria across
parts of northeast OK...although will hold off on any headlines at
this time. Day shift can monitor morning conditions and issue if
necessary.

The dryline should temporarily move through a large portion of
eastern OK this afternoon before retreating west overnight as
breezy south winds persist. Thursday should remain convection free
as the dryline retreats farther west to near the TX
panhandle/western OK border. Storms are expected to develop in
this area by late afternoon/early evening...with upscale growth
into the overnight hours as storms move into parts of eastern OK.
Severe weather will be a possibility with this activity.

The active pattern will continue into late week as a secondary
upper wave swings around the primary central Rockies cyclone. This
will result in yet another round of dryline convection moving east
into the area late Friday into Friday night...with storms
lingering into at least Saturday night before the synoptic front
finally shifts southeast of the region. Severe weather along with
heavy rainfall will be possible for much of the area.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   86  68  87  69 /  20  10  10  50
FSM   87  69  89  70 /  40  10  10  30
MLC   87  68  88  70 /  40  10  10  50
BVO   85  63  86  66 /  20  10  10  60
FYV   82  63  83  65 /  40  10  10  40
BYV   82  65  84  66 /  20  10  10  40
MKO   86  66  87  68 /  50  10  10  50
MIO   85  63  86  66 /  50  10  10  60
F10   86  68  86  68 /  20  10  10  50
HHW   86  70  87  70 /  50  10  10  30

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...None.
AR...None.
&&

SHORT TERM...11
LONG TERM....18
Hazardous weather outlook, May 17, 4:43 AM CDT, 41 minutes before
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In the hours before

Special weather statement, May 17, 3:14 AM CDT, 2 hours 10 minutes before
Special Weather Statement
National Weather Service Tulsa OK
314 AM CDT WED MAY 17 2017

OKZ054-055-060-061-064>067-070-071-170845-
Tulsa OK-Muskogee OK-Okmulgee OK-Osage OK-Rogers OK-Okfuskee OK-
Washington OK-Wagoner OK-Creek OK-McIntosh OK-
314 AM CDT WED MAY 17 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ROGERS...
SOUTHEASTERN OSAGE...EASTERN CREEK...NORTHWESTERN MCINTOSH...
SOUTHWESTERN WASHINGTON...WESTERN WAGONER...NORTHWESTERN MUSKOGEE...
OKMULGEE...TULSA AND EASTERN OKFUSKEE COUNTIES UNTIL 345 AM CDT...

At 314 AM CDT, strong thunderstorms were located along a line
extending from 7 miles north of Sand Springs to 5 miles north of
Pharoah. Movement was northeast at 50 mph.

Dime size hail and winds in excess of 40 mph will be possible with
these storms.

Locations in or near the path include...
Tulsa...                          Broken Arrow...
Sand Springs...                   Claremore...
Okmulgee...                       Okemah...
Owasso...                         Bixby...
Sapulpa...                        Jenks...
Okfuskee...                       Glenpool...
Coweta...                         Skiatook...
Catoosa...                        Henryetta...
Collinsville...                   Verdigris...
Haskell...                        Kiefer...

This includes the following highways,
 Interstate 40 in Oklahoma between mile markers 221 and 260.
 Interstate 44 between mile markers 200 and 250.

LAT...LON 3533 9558 3532 9628 3616 9628 3620 9624
      3622 9625 3623 9628 3644 9628 3645 9557
TIME...MOT...LOC 0814Z 229DEG 52KT 3625 9614 3550 9615
Special weather statement, May 17, 3:16 AM CDT, 2 hours 8 minutes before
Special Weather Statement
National Weather Service Tulsa OK
316 AM CDT WED MAY 17 2017

OKZ054-055-170845-
Osage OK-Washington OK-
316 AM CDT WED MAY 17 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN OSAGE AND WASHINGTON
COUNTIES UNTIL 345 AM CDT...

At 316 AM CDT, strong thunderstorms were located along a line
extending from 6 miles southeast of Cedar Vale to 2 miles southeast
of Bigheart to 5 miles northeast of Barnsdall. Movement was north at
60 mph.

Dime size hail and winds in excess of 40 mph will be possible with
these storms.

Locations in or near the path include...
Bartlesville...                   Pawhuska...
Dewey...                          Barnsdall...
Copan...                          Ramona...
Shidler...                        Wynona...
Ochelata...                       Avant...
Vera...                           Wann...
Elgin...                          Grainola...
Foraker...                        Bigheart...
Osage Hills State Park...         Pearsonia...
Hulah...                          Okesa...

LAT...LON 3700 9580 3644 9582 3643 9628 3683 9676
      3700 9675
TIME...MOT...LOC 0816Z 194DEG 51KT 3702 9645 3683 9619 3661 9608
Local storm report, May 17, 3:41 AM CDT, 1 hour 43 minutes before
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Special weather statement, May 17, 3:58 AM CDT, 1 hour 26 minutes before
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Special weather statement, May 17, 4:14 AM CDT, 1 hour 10 minutes before
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Special weather statement, May 17, 5:24 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 1:43 AM CDTSpecial Weather StatementTSAPawnee32 min
May 17, 2:13 AM CDTSpecial Weather StatementTSACreek, Osage, Pawnee32 min
May 17, 2:40 AM CDTSpecial Weather StatementTSAOsage, Pawnee35 min
May 17, 2:42 AM CDTSpecial Weather StatementTSACreek, Okfuskee33 min
May 17, 3:14 AM CDTSpecial Weather StatementTSAMcIntosh, Okmulgee, Rogers, Tulsa31 min
May 17, 3:16 AM CDTSpecial Weather StatementTSAOsage, Washington29 min
May 17, 3:20 AM CDTWind AdvisoryTSAAdair, Cherokee, Craig, Creek, Delaware, McIntosh and 11 more16 hr
May 17, 3:25 AM CDTSevere Thunderstorm WarningTSAMayes, Okmulgee, Rogers, Tulsa, Wagoner50 min
May 17, 3:58 AM CDTSpecial Weather StatementTSANowata32 min
May 17, 4:14 AM CDTSpecial Weather StatementTSACraig, Mayes, Ottawa46 min
May 17, 7:25 AM CDTSpecial Weather StatementTSASebastian35 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.