Alert archive / Oklahoma / Special Weather Statements in 2016

Special Weather Statement, NWS Tulsa, OK

March 18, 2016Pittsburg County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Mar 18, 2016, 9:44 AM CDT for Pittsburg County, Oklahoma. It was in force for 31 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
Mar 18, 2016, 9:44 AM CDT (14:44 UTC)
Expired
Mar 18, 2016, 10:15 AM CDT
In force
31 min
Issued by
NWS Tulsa, OK

County Pittsburg County, OK

The radar

The Western Arkansas radar (KSRX), 130 km from the middle of the area, began a volume at 14:46 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, 2.7 hours before the alert went out and 167 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 2016-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2016-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
740 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
261 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Mar 18, 6:29 AM CDT, 3 hours 15 minutes earlier.

Area forecast discussion, Mar 18, 6:29 AM CDT, 3 hours 15 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE Tulsa OK
629 AM CDT FRI MAR 18 2016

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
Ceilings will become MVFR areawide this morning as showers
and a few thunderstorms continue to slowly develop. Some IFR
cigs will be possible this afternoon...especially across
southeast OK. Expect improving conditions this evening as
drier air overspreads the region.

&&

.PREV DISCUSSION... /ISSUED 411 AM CDT FRI MAR 18 2016/

DISCUSSION...
Cold front nearing I-44 early this morning will continue to push
south to the Red River by early this afternoon, ushering in below
normal temps for the first time this month. Impressive baroclinic
zone has set up across Kansas in response to shortwave moving
through central Rockies. This system will generally move east with
best forcing remaining to the north. However, modest isentropic
lift will be present as the front moves south, resulting in
relatively high rain chances through much of today. Precip
amounts will mostly be on the light side, but expect some
convection to break out this morning south of I-40 which will
result in heavier totals there. Precip will end in most areas by
this evening as subsidence in wake of upper system moves over the
area.

This will ultimately result in clearing skies tonight, especially
northern areas where temps likely to fall near or a few degrees
below freezing. Given early green-up taking place the Freeze Watch
looks good and will likely be upgraded for most if not all
counties with later forecasts. Cool airmass will remain in place
through the weekend with a bit of a reinforcing surge on Sunday.
Sub-freezing temps should impact more of the area Saturday night
and some areas Sunday night as well.

South winds will return Monday setting the stage for a
significant warm up, with high fire danger through mid week. Next
cold front will bring another chance of rain by the end of the
forecast period.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   51  33  56  32 /  60  20   0   0
FSM   60  36  58  34 /  70  40   0   0
MLC   57  35  57  32 /  80  30   0   0
BVO   48  30  54  29 /  70  10   0   0
FYV   53  33  50  30 /  70  40   0   0
BYV   52  32  51  31 /  60  60  10   0
MKO   54  32  56  31 /  70  30   0   0
MIO   50  29  52  30 /  70  30   0   0
F10   53  33  56  32 /  70  20   0   0
HHW   63  40  59  33 /  80  40   0   0

&&

.TSA Watches/Warnings/Advisories...
OK...Freeze Watch from late tonight through Saturday morning for
     OKZ054>064-066>070.

AR...Freeze Watch from late tonight through Saturday morning for
     ARZ001-002-010-011.

&&

AVIATION...18
Hazardous weather outlook, Mar 18, 5:04 AM CDT, 4 hours 40 minutes before
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In the hours before

Special weather statement, Mar 18, 9:44 AM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
944 AM CDT FRI MAR 18 2016

OKZ073-075-181515-
PITTSBURG OK-LATIMER OK-
944 AM CDT FRI MAR 18 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PITTSBURG AND WEST
CENTRAL LATIMER COUNTIES UNTIL 1015 AM CDT...

AT 943 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES NORTHEAST
OF BLANCO...MOVING EAST AT 40 MPH.

DIME SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH INCLUDE...
HARTSHORNE...                     BLANCO...
HAILEYVILLE...                    GOWEN...
DOW...

LAT...LON 3469 9576 3483 9582 3492 9545 3476 9543
TIME...MOT...LOC 1443Z 254DEG 33KT 3477 9573

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 9:37 AM CDTSevere Thunderstorm WarningTSAChoctaw, Pushmataha53 min
Mar 18, 10:13 AM CDTSevere Thunderstorm WarningTSAChoctaw47 min
Mar 18, 10:34 AM CDTSpecial Weather StatementTSALatimer26 min
Mar 18, 10:47 AM CDTSevere Thunderstorm WarningTSAChoctaw28 min
Mar 18, 2:14 PM CDTFreeze WatchTSAAdair, Cherokee, Craig, Creek, Delaware, Haskell and 12 more14 hr
Mar 18, 2:14 PM CDTFreeze WarningTSAAdair, Cherokee, Craig, Creek, Delaware, Mayes and 9 more19 hr

Nearby

Special Weather Statements in Oklahoma, 2016Every special weather statement 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.