Alert archive / Oklahoma / Special Weather Statements in 2015

Special Weather Statement, NWS Tulsa, OK

September 8, 2015Delaware County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Sep 8, 2015, 3:03 PM CDT for Delaware County, Oklahoma. It was in force for 42 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
Sep 8, 2015, 3:03 PM CDT (20:03 UTC)
Expired
Sep 8, 2015, 3:45 PM CDT
In force
42 min
Issued by
NWS Tulsa, OK

County Delaware County, OK

The radar

The Tulsa radar (KINX), 64 km from the middle of the area, began a volume at 20:04 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

Springfield, MO (KSGF), launched 12:00Z, 8.1 hours before the alert went out and 114 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, Springfield, MO at 12:00Z on 2015-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 763 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, Springfield, MO at 12:00Z on 2015-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.1939Sfc1 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
763 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
1220 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Sep 8, 2:46 PM CDT, 17 minutes earlier.

Area forecast discussion, Sep 8, 2:46 PM CDT, 17 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
246 PM CDT TUE SEP 8 2015

.DISCUSSION...
Surface cold front pushing into far northeast Oklahoma as of
mid afternoon. Low coverage of showers and storms had been
lingering across far northeast Oklahoma and southeast Kansas for
much of the day. Coverage over the last few hours has increased as
the front has gotten a little better push. Overall severe risk
will remain limited...and mainly confined to northeast Oklahoma
during the afternoon and early evening hours. As areal coverage
increases...the risk for severe will lessen some with locally
heavy rainfall becoming the main risk. The front looks to
accelerate southeast overnight...which will result in a lower
heavy rain risk further southeast. Rain chances to diminish across
most of the area Wednesday...with cooler weather expected through
Thursday before another upper system and a sfc boundary impacting
the area late Thursday night and Friday. With less moisture to
work with...will keep lower end pops as they are during that time
period. Upper system slows and wraps up over the midwest during
the weekend...resulting in a dry weekend with a sneak peek at
temperatures more typical of early fall.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   68  85  68  87 /  90  20  10  10
FSM   71  84  68  88 /  80  60  10  10
MLC   70  84  68  88 /  80  40  10   0
BVO   67  85  64  86 /  80  10  10  10
FYV   67  81  64  83 /  80  40  10  10
BYV   67  81  64  81 /  90  40  10  10
MKO   69  84  67  87 /  80  20  10  10
MIO   67  84  65  85 /  90  20  10  10
F10   69  84  67  87 /  80  20  10  10
HHW   72  86  70  88 /  70  60  20  10

&&

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

SHORT TERM...30
LONG TERM....23
Hazardous weather outlook, Sep 8, 12:52 PM CDT, 2 hours 11 minutes before
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In the hours before

Local storm report, Sep 8, 2:36 PM CDT, 27 minutes before
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Special weather statement, Sep 8, 2:36 PM CDT, 27 minutes before
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Special weather statement, Sep 8, 3:03 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 2:36 PM CDTSpecial Weather StatementTSACraig, Ottawa39 min
Sep 8, 3:28 PM CDTAreal Flood AdvisoryTSACraig, Delaware, Mayes, Ottawa3 hr
Sep 8, 3:42 PM CDTAreal Flood AdvisoryTSADelaware, Mayes, Ottawa4 hr
Sep 8, 3:49 PM CDTSpecial Weather StatementTSADelaware41 min
Sep 8, 3:56 PM CDTSpecial Weather StatementTSALeFlore34 min
Sep 8, 4:24 PM CDTSpecial Weather StatementTSACreek36 min
Sep 8, 5:08 PM CDTSpecial Weather StatementTSAPawnee37 min
Sep 8, 5:16 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee44 min
Sep 8, 5:20 PM CDTSpecial Weather StatementTSACreek25 min
Sep 8, 5:36 PM CDTAreal Flood AdvisoryTSAAdair, Cherokee3 hr
Sep 8, 5:41 PM CDTSevere Thunderstorm WarningTSACreek, Tulsa29 min
Sep 8, 6:03 PM CDTAreal Flood AdvisoryTSACreek, Okmulgee, Osage, Pawnee, Tulsa, Washington3 hr
Sep 8, 6:08 PM CDTSpecial Weather StatementTSACreek, Okmulgee, Osage, Tulsa, Washington52 min
Sep 8, 6:12 PM CDTSpecial Weather StatementTSALatimer33 min
Sep 8, 6:29 PM CDTSevere Thunderstorm WarningTSACreek, Osage, Pawnee, Tulsa, Washington46 min
Sep 8, 6:51 PM CDTSevere Thunderstorm WarningTSARogers, Wagoner39 min
Sep 8, 3:26 PM CDTSpecial Weather StatementTSASebastian49 min
Sep 8, 4:16 PM CDTSpecial Weather StatementTSABenton44 min

Nearby

Special Weather Statements in Oklahoma, 2015Every special weather statement in 2015

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.