Alert archive / Arkansas / Special Weather Statements in 2012

Special Weather Statement, NWS Tulsa, OK

May 29, 2012Washington County, Arkansas

NWS Tulsa, OK issued this special weather statement at May 29, 2012, 5:23 AM CDT for Washington County, Arkansas. It was in force for 37 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 29, 2012, 5:23 AM CDT (10:23 UTC)
Expired: May 29, 2012, 6:00 AM CDT
In force: 37 min
Issued by: NWS Tulsa, OK

County Washington County, AR

The radar

The Western Arkansas radar (KSRX), 98 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

Springfield, MO (KSGF), launched 00:00Z, 10.4 hours before the alert went out and 100 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1923 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1564 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.4

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 May 29, 3:07 AM CDT, 2 hours 16 minutes earlier.

Area forecast discussion, May 29, 3:07 AM CDT, 2 hours 16 minutes before

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Hazardous weather outlook, May 29, 5:10 AM CDT, 13 minutes before

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In the hours before

Special weather statement, May 29, 2:05 AM CDT, 3 hours 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
205 AM CDT TUE MAY 29 2012

ARZ001-010-019-029-OKZ069-072-076-290745-
ADAIR OK-BENTON AR-CRAWFORD AR-LE FLORE OK-SEBASTIAN AR-SEQUOYAH
OK-WASHINGTON AR-
205 AM CDT TUE MAY 29 2012

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 245 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHWEST ARKANSAS
     BENTON...CRAWFORD AND WASHINGTON

IN WEST CENTRAL ARKANSAS
     NORTHWESTERN SEBASTIAN

IN SOUTHEAST OKLAHOMA
     NORTHEASTERN LE FLORE

IN EAST CENTRAL OKLAHOMA
     EASTERN SEQUOYAH

IN NORTHEAST OKLAHOMA
     SOUTHEASTERN ADAIR

AT 205 AM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 2 MILES NORTH OF BELLA VISTA TO 4 MILES SOUTHEAST OF
GALLITIN TO 3 MILES SOUTHWEST OF ODELL TO 2 MILES WEST OF
MULDROW...MOVING EAST AT 25 MPH.

A LARGE PORTION OF BENTON...CRAWFORD...NORTHWESTERN SEBASTIAN...
WASHINGTON...NORTHEASTERN LE FLORE...EASTERN SEQUOYAH AND
SOUTHEASTERN ADAIR COUNTIES WILL BE AFFECTED BY THESE STORMS THROUGH
245 AM CDT.

THESE STORMS WILL BE CAPABLE OF PRODUCING DIME SIZE HAIL AND WIND
GUSTS TO 45 MPH.

LAT...LON 3618 9394 3579 9400 3566 9406 3566 9407
      3563 9407 3532 9420 3531 9476 3575 9456
      3615 9448 3651 9433 3651 9387 3640 9387
      3638 9389 3637 9387 3633 9386
TIME...MOT...LOC 0705Z 270DEG 21KT 3646 9422 3615 9436
          3575 9444 3540 9461

Special weather statement, May 29, 2:47 AM CDT, 2 hours 36 minutes before

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Special weather statement, May 29, 3:06 AM CDT, 2 hours 17 minutes before

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Special weather statement, May 29, 3:55 AM CDT, 1 hour 28 minutes before

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Special weather statement, May 29, 5:03 AM CDT, 20 minutes before

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Special weather statement, May 29, 5:23 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 9:46 PM CDT	Special Weather Statement	TSA	Creek	44 min
May 28, 10:28 PM CDT	Special Weather Statement	TSA	Washington	62 min
May 28, 10:34 PM CDT	Special Weather Statement	TSA	Pawnee	56 min
May 28, 10:36 PM CDT	Special Weather Statement	TSA	Okfuskee	54 min
May 28, 10:43 PM CDT	Special Weather Statement	TSA	Osage	62 min
May 28, 10:51 PM CDT	Special Weather Statement	TSA	Craig	54 min
May 28, 10:58 PM CDT	Special Weather Statement	TSA	Nowata	47 min
May 28, 11:21 PM CDT	Special Weather Statement	TSA	Okmulgee	39 min
May 28, 11:28 PM CDT	Special Weather Statement	TSA	Washington	47 min
May 28, 11:31 PM CDT	Special Weather Statement	TSA	Craig	29 min
May 28, 11:57 PM CDT	Special Weather Statement	TSA	Mayes, Rogers	33 min
May 29, 12:02 AM CDT	Special Weather Statement	TSA	Craig	43 min
May 29, 12:05 AM CDT	Special Weather Statement	TSA	Nowata, Washington	25 min
May 29, 12:08 AM CDT	Special Weather Statement	TSA	McIntosh, Muskogee, Wagoner	37 min
May 29, 12:19 AM CDT	Special Weather Statement	TSA	Craig, Ottawa	56 min
May 29, 1:00 AM CDT	Special Weather Statement	TSA	Adair, Cherokee, Sequoyah	45 min
May 29, 5:03 AM CDT	Special Weather Statement	TSA	Delaware	27 min
May 29, 5:25 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Delaware	35 min
May 29, 1:24 AM CDT	Special Weather Statement	TSA	Benton	36 min
May 29, 2:05 AM CDT	Special Weather Statement	TSA	Benton, Crawford, Washington	40 min
May 29, 2:47 AM CDT	Special Weather Statement	TSA	Carroll, Madison, Washington	43 min
May 29, 3:06 AM CDT	Special Weather Statement	TSA	Crawford	39 min
May 29, 3:55 AM CDT	Special Weather Statement	TSA	Franklin, Sebastian	65 min

Nearby

Special Weather Statements in Arkansas, 2012 Every special weather statement in 2012

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.