Alert archive / Arkansas / Special Weather Statements in 2017

Special Weather Statement, NWS Tulsa, OK

March 24, 2017Franklin County, Arkansas

NWS Tulsa, OK issued this special weather statement at Mar 24, 2017, 4:36 PM CDT for Franklin County, Arkansas. It was in force for 54 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 24, 2017, 4:36 PM CDT (21:36 UTC)
Expired
Mar 24, 2017, 5:30 PM CDT
In force
54 min
Issued by
NWS Tulsa, OK

County Franklin County, AR

The radar

The Western Arkansas radar (KSRX), 71 km from the middle of the area, began a volume at 21:35 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

Shreveport, LA (KBAD), launched 12:00Z, 9.6 hours before the alert went out and 349 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, Shreveport, LA at 12:00Z on 2017-03-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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, Shreveport, LA at 12:00Z on 2017-03-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 234 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
10 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
854 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
234 m²/s²
0-3 km storm-relative helicity
407 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 24, 3:09 PM CDT, 1 hour 27 minutes earlier.

Area forecast discussion, Mar 24, 3:09 PM CDT, 1 hour 27 minutes before
Area Forecast Discussion
National Weather Service Tulsa OK
309 PM CDT Fri Mar 24 2017

.DISCUSSION...
Showers and thunderstorms have persisted across southeastern Oklahoma into
northwest Arkansas this afternoon. This activity has been elevated in nature
and is occurring in a area of favorable upper level divergence in advance
of an upper level low currently spinning over the Texas Panhandle. Rainfall
amounts are approaching 1 inch in a few locations across southeast Oklahoma.
This activity will shift to the east over the next several hours. There is still
the potential that some of these storms could become strong to severe as they move
into something of a more favorable airmass. These storms are expected to be east of
the Tulsa County Warning Area by mid-evening.

A few showers and thunderstorms have also begun to develop along the dryline across
western Osage and Pawnee counties. There is potential for this activity to continue
to develop along the dryline and move into northeast Oklahoma for the next several
hours as well. The airmass just ahead of the dryline is becoming increasingly unstable
with stronger heating taking place. There is also the potential that some of these
storms could become strong to severe with damaging winds to around 70 mph and golf ball size
hail the concern.

Scattered showers and thunderstorms are expected overnight and into Saturday morning
as the upper level low moves out of the Texas Panhandle and across Oklahoma. The upper
level low will be over southwest Missouri by early Saturday morning. These storms will
be elevated in nature but will be capable of producing large hail.

Will continue the Red Flag Warning through 00z for areas of west of Highway 75 in
northeast Oklahoma as the dryline tries to move into that area.

The remainder of Saturday will be dry as ridging aloft builds over the region. The
next chance of Thunderstorms will Sunday into Monday morning as the next in a
series of upper level disturbances move across the area. There is expected to be
adequate shear and instability for some of these storms to become strong to severe
especially Sunday afternoon and evening.

After a benign period of weather most of Monday and Tuesday, the chances of showers
and thunderstorms ramp up Tuesday night into Wednesday as the next upper level
low moves out of the Southwest United States and across the Plains. Models suggest
that this system will be even more vigorous than the previous two. Shower and thunderstorm
chances will linger into Thursday before the system exits to the east.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   52  66  46  78 /  70  20   0  30
FSM   53  68  47  81 /  70  20   0  10
MLC   52  71  47  82 /  50  10   0  30
BVO   50  65  42  75 /  70  20   0  30
FYV   51  62  44  74 /  70  50  10  10
BYV   53  64  46  73 /  70  70  10  10
MKO   52  67  46  79 /  60  20   0  30
MIO   52  61  44  74 /  70  60  10  10
F10   52  68  47  80 /  60  10   0  30
HHW   53  73  49  82 /  30   0   0  20

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Red Flag Warning until 7 PM CDT this evening for OKZ054-059-064-
     065.

AR...None.
&&

LONG TERM....10
Hazardous weather outlook, Mar 24, 1:00 PM CDT, 3 hours 36 minutes before
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In the hours before

Special weather statement, Mar 24, 2:51 PM CDT, 1 hour 45 minutes before
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Special weather statement, Mar 24, 3:30 PM CDT, 1 hour 6 minutes before
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Special weather statement, Mar 24, 4:01 PM CDT, 35 minutes before
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Special weather statement, Mar 24, 4:27 PM CDT, 9 minutes before
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Special weather statement, Mar 24, 4:36 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
Mar 24, 3:15 AM CDTWind AdvisoryTSAAdair, Cherokee, Craig, Creek, Delaware, McIntosh and 12 more8 hr
Mar 24, 3:21 AM CDTRed Flag WarningTSACreek, Okfuskee, Pawnee16 hr
Mar 24, 2:51 PM CDTSpecial Weather StatementTSALeFlore39 min
Mar 24, 5:56 PM CDTSpecial Weather StatementTSALeFlore49 min
Mar 24, 3:30 PM CDTSpecial Weather StatementTSACrawford, Sebastian45 min
Mar 24, 4:01 PM CDTSpecial Weather StatementTSACrawford, Sebastian44 min
Mar 24, 4:27 PM CDTSpecial Weather StatementTSAMadison, Washington48 min
Mar 24, 5:04 PM CDTSpecial Weather StatementTSACarroll41 min
Mar 24, 5:22 PM CDTSpecial Weather StatementTSAMadison38 min
Mar 24, 6:14 PM CDTSpecial Weather StatementTSACarroll, Madison, Washington46 min
Mar 24, 6:29 PM CDTSpecial Weather StatementTSACrawford, Franklin, Sebastian46 min
Mar 24, 6:54 PM CDTSpecial Weather StatementTSACarroll, Madison51 min

Nearby

Special Weather Statements in Arkansas, 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.