Alert archive / Oklahoma / Heat Advisories in 2016

Heat Advisory 21, NWS Tulsa, OK

August 2, 201616 counties in Oklahoma

NWS Tulsa, OK issued this heat advisory at Aug 2, 2016, 4:56 PM CDT for 16 counties in Oklahoma. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Aug 2, 2016, 4:56 PM CDT (21:56 UTC)
Expired
Aug 2, 2016, 8:44 PM CDT
In force
4 hr
Issued by
NWS Tulsa, OK

Counties Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Pawnee County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 9 km from the middle of the area, began a volume at 21:55 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, 9.9 hours before the alert went out and 186 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 2016-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 793 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2016-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 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
793 J/kg
Mixed-layer CIN
-189 J/kg
Mixed-layer LCL
1632 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted.

742 
WWUS74 KTSA 022156
NPWTSA

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TULSA OK
456 PM CDT TUE AUG 2 2016

OKZ054>067-070>072-074-030200-
/O.NEW.KTSA.HT.Y.0021.160802T2200Z-160803T0200Z/
OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE-TULSA-ROGERS-MAYES-
DELAWARE-CREEK-OKFUSKEE-OKMULGEE-WAGONER-MUSKOGEE-MCINTOSH-
SEQUOYAH-HASKELL-
INCLUDING THE CITIES OF...PAWHUSKA...BARTLESVILLE...NOWATA...
VINITA...MIAMI...PAWNEE...TULSA...CLAREMORE...PRYOR...GROVE...
JAY...SAPULPA...OKEMAH...OKMULGEE...WAGONER...MUSKOGEE...
CHECOTAH...SALLISAW...STIGLER
456 PM CDT TUE AUG 2 2016

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A HEAT
ADVISORY...WHICH IS IN EFFECT UNTIL 9 PM CDT THIS EVENING. 

* AFFECTED AREA...IN OKLAHOMA...OSAGE...WASHINGTON...NOWATA... 
  CRAIG...OTTAWA...PAWNEE...TULSA...ROGERS...MAYES...DELAWARE... 
  CREEK...OKFUSKEE...OKMULGEE...WAGONER...MUSKOGEE...MCINTOSH... 
  SEQUOYAH...AND HASKELL COUNTIES.

* TEMPERATURE...HEAT INDICES FROM 105 TO 110 DEGREES WILL CONTINUE
  INTO THIS EVENING.

* IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY HAS
  CREATED A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PERSONS THAT MUST BE OUTSIDE SHOULD LESSEN THEIR ACTIVITY, DRINK
PLENTY OF LIQUIDS, PREFERABLY WATER.  TAKE FREQUENT BREAKS AND
WEAR LIGHT COLORED, LOOSE-FITTING CLOTHING.  STRENUOUS ACTIVITIES
SHOULD BE REDUCED, ELIMINATED OR RESCHEDULED TO THE COOLEST TIME
OF THE DAY. PROLONGED EXPOSURE COMBINED WITH PHYSICAL ACTIVITY CAN
CAUSE HEAT EXHAUSTION AND HEAT STROKE.

$$

69
1 follow-up statement
523 
WWUS74 KTSA 030144
NPWTSA

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TULSA OK
844 PM CDT TUE AUG 2 2016

OKZ054>067-070>072-074-030245-
/O.CAN.KTSA.HT.Y.0021.000000T0000Z-160803T0200Z/
OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE-TULSA-ROGERS-MAYES-
DELAWARE-CREEK-OKFUSKEE-OKMULGEE-WAGONER-MUSKOGEE-MCINTOSH-
SEQUOYAH-HASKELL-
INCLUDING THE CITIES OF...PAWHUSKA...BARTLESVILLE...NOWATA...
VINITA...MIAMI...PAWNEE...TULSA...CLAREMORE...PRYOR...GROVE...
JAY...SAPULPA...OKEMAH...OKMULGEE...WAGONER...MUSKOGEE...
CHECOTAH...SALLISAW...STIGLER
844 PM CDT TUE AUG 2 2016

...HEAT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN TULSA HAS CANCELLED THE HEAT
ADVISORY. 

HEAT INDEX VALUES HAVE FALLEN BELOW TRIPLE DIGITS...AND HENCE
BELOW DANGEROUS LEVELS THIS EVENING. HEAT INDEX VALUES NEAR 105
DEGREES CAN BE EXPECTED ACROSS MUCH OF EASTERN OKLAHOMA AND WEST
CENTRAL ARKANSAS AGAIN TOMORROW.

$$

69

Nearby

Heat Advisories in Oklahoma, 2016Every heat advisory 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.