Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 326, NWS Tulsa, OK

May 23, 1999McIntosh County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 23, 1999, 4:17 AM CDT for McIntosh County, Oklahoma. It was in force for 43 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 23, 1999, 4:17 AM CDT (09:17 UTC)
Expired: May 23, 1999, 5:00 AM CDT
In force: 43 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County McIntosh County, OK

What was reported inside it

Time	Report	Where	Remark
May 23, 4:30 AM CDT	Thunderstorm Wind	Eufaula, OK	Several large tree limbs were blown down in Eufaula.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 23, 2:15 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 9.3 hours before the alert went out and 158 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: 1374 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1632 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at May 22, 11:07 PM CDT, 5 hours 10 minutes earlier.

Area forecast discussion, May 22, 11:07 PM CDT, 5 hours 10 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
1107 PM CDT SAT MAY 22 1999

HAVE ISSUED A FLASH FLOOD WATCH FOR MUCH OF EASTERN OKLAHOMA.  WHILE
SOME UNCERTAINTIES REMAIN ON THE EVOLUTION OF THE COMPLEX TO THE
NORTH...IT APPEARS THAT THERE IS A GOOD CHANCE THAT IT WILL TURN
MORE SOUTH AND TRAVEL ALONG AND JUST SOUTH OF THE H850 WEAK
BAROCLINIC ZONE EXTENDING NEAR AN ICT-FYV LINE AT 00Z.

WHILE THERE WILL BE A SEVERE THREAT...AM ALSO CONCERNED THAT WITH A
30 KNOT H850 JET FEEDING INTO THE COMPLEX...THE SOUTHWEST EDGE OF
THE COMPLEX WILL ANCHOR IN OR NEAR THE AREA AND RESULT IN A PERIOD
OF TRAINING ECHOES.

LAPES RATES IN THE AREA ARE STEEP RESULTING SUFFICIENT ELEVATED
INSTABILITY TO SUPPORT THE IDEA OF BOTH A HAIL AND WIND THREAT WITH
THESE STORMS..DESPITE A CONVECTIVELY MODIFIED BOUNDARY LAYER IN MOST
OF THE FORECAST AREA.  AT THIS TIME WE ARE EXPECTING THAT THE STORMS
WILL BE MOVING INTO OSAGE / PAWNEE COUNTIES AROUND 07Z AND PROGRESS
SOUTHEAST FROM THERE.

/8

.TUL...
AR...NONE.
OK...OKZ054>075 FLASH FLOOD WATCH TONIGHT.

In the hours before

Local storm report, May 22, 10:42 PM CDT, 5 hours 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1042 PM CDT SAT MAY 22 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0400 PM    SILOAM SPGS               AR    .75 INCH HAIL
05/22/99   BENTON

0440 PM    WESTVILLE                 OK    .75 INCH HAIL
05/22/99   ADAIR

0530 PM    3 W MARAMEC               OK    1 INCH HAIL
05/22/99   PAWNEE

0530 PM    BARNSDALL                 OK    1 INCH HAIL
05/22/99   OSAGE

0530 PM    VERA                      OK    .88 INCH HAIL
05/22/99   WASHINGTON

0640 PM    NATURAL DAM               AR    1 INCH HAIL
05/22/99   CRAWFORD

0700 PM    TULSA                     OK    FLOOD
05/22/99   TULSA                           STREET FLOODING

0700 PM    JENKS                     OK    1 INCH HAIL
05/22/99   TULSA

0715 PM    BEGGS                     OK    .88 INCH HAIL
05/22/99   OKMULGEE

0715 PM    3 N MOODYS                OK    .75 INCH HAIL
05/22/99   CHEROKEE

0730 PM    2 W BEGGS                 OK    .75 INCH HAIL
05/22/99   OKMULGEE

0730 PM    BOLEY                     OK    .75 INCH HAIL
05/22/99   OKFUSKEE

Local storm report, May 22, 10:42 PM CDT, 5 hours 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1042 PM CDT SAT MAY 22 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0400 PM    SILOAM SPGS               AR    .75 INCH HAIL
05/22/99   BENTON

0440 PM    WESTVILLE                 OK    .75 INCH HAIL
05/22/99   ADAIR

0530 PM    3 W MARAMEC               OK    1 INCH HAIL
05/22/99   PAWNEE

0530 PM    BARNSDALL                 OK    1 INCH HAIL
05/22/99   OSAGE

0530 PM    VERA                      OK    .88 INCH HAIL
05/22/99   WASHINGTON

0640 PM    NATURAL DAM               AR    1 INCH HAIL
05/22/99   CRAWFORD

0700 PM    TULSA                     OK    FLOOD
05/22/99   TULSA                           STREET FLOODING

0700 PM    JENKS                     OK    1 INCH HAIL
05/22/99   TULSA

0715 PM    BEGGS                     OK    .88 INCH HAIL
05/22/99   OKMULGEE

0715 PM    3 N MOODYS                OK    .75 INCH HAIL
05/22/99   CHEROKEE

0730 PM    2 W BEGGS                 OK    .75 INCH HAIL
05/22/99   OKMULGEE

0730 PM    BOLEY                     OK    .75 INCH HAIL
05/22/99   OKFUSKEE

Local storm report, May 23, 3:36 AM CDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
336 AM CDT SUN MAY 23 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0202 AM    10 W PAWHUSKA             OK    .75 INCH HAIL
05/23/99   OSAGE

0240 AM    BERNICE                   OK    .88 INCH HAIL
05/23/99   DELAWARE

0240 AM    TERLTON                   OK    62 MPH TSTM GUST
05/23/99   PAWNEE

0307 AM    TULSA                     OK    .88 INCH HAIL
05/23/99   TULSA

0325 AM    SHAMROCK                  OK    60 MPH TSTM GUST
05/23/99   CREEK

Local storm report, May 23, 3:36 AM CDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
336 AM CDT SUN MAY 23 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0202 AM    10 W PAWHUSKA             OK    .75 INCH HAIL
05/23/99   OSAGE

0240 AM    BERNICE                   OK    .88 INCH HAIL
05/23/99   DELAWARE

0240 AM    TERLTON                   OK    62 MPH TSTM GUST
05/23/99   PAWNEE

0307 AM    TULSA                     OK    .88 INCH HAIL
05/23/99   TULSA

0325 AM    SHAMROCK                  OK    60 MPH TSTM GUST
05/23/99   CREEK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 7:13 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	47 min
May 22, 7:21 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	39 min
May 22, 7:36 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee	39 min
May 22, 7:40 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	50 min
May 22, 7:49 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	41 min
May 22, 7:56 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	49 min
May 22, 8:46 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	44 min
May 22, 9:23 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	52 min
May 23, 1:45 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	45 min
May 23, 1:45 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Rogers, Washington	45 min
May 23, 1:45 AM CDT	Severe Thunderstorm Warning	TSA	Craig	45 min
May 23, 1:58 AM CDT	Severe Thunderstorm Warning	TSA	Ottawa	47 min
May 23, 2:30 AM CDT	Severe Thunderstorm Warning	TSA	Delaware, Mayes, Ottawa	60 min
May 23, 2:30 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	60 min
May 23, 2:30 AM CDT	Severe Thunderstorm Warning	TSA	Rogers, Wagoner	60 min
May 23, 3:35 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee	55 min
May 23, 3:35 AM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Tulsa, Wagoner	55 min
May 23, 3:58 AM CDT	Flash Flood Warning	TSA	Muskogee, Okmulgee, Wagoner	2 hr
May 23, 3:58 AM CDT	Flash Flood Warning	TSA	Cherokee	2 hr
May 22, 7:29 PM CDT	Severe Thunderstorm Warning	TSA	Sebastian	46 min
May 23, 3:05 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison	40 min
May 23, 3:05 AM CDT	Severe Thunderstorm Warning	TSA	Washington	40 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1999 Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.