Alert archive / Arkansas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 22, NWS Tulsa, OK

April 10, 1990Johnson County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 10, 1990, 3:25 AM CDT for Johnson County, Arkansas. It was in force for 65 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: Apr 10, 1990, 3:25 AM CDT (08:25 UTC)
Expired: Apr 10, 1990, 4:30 AM CDT
In force: 65 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Johnson County, AR

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Apr 10, 4:00 AM CDT	Hail 1.5	Johnson, AR

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Springfield, MO (KUMN), launched 00:00Z, 8.4 hours before the alert went out and 151 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 904 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFSM 100826
SVRFSM
ARC071-100930-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
325 AM CDT TUE APR 10 1990
 
THE NATIONAL WEATHER SERVICE IN FORT SMITH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST ARKANSAS
 
   ...JOHNSON COUNTY
 
RADAR AT 325 AM CDT SHOWED A SEVERE THUNDERSTORM 15 MILES NORTHWEST
OF CLARKSVILLE...MOVEMENT WAS EAST AT 30 MPH.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

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.

In the hours before

Local storm report, Apr 9, 11:19 PM CDT, 4 hours 6 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
1115 PM CDT MON APR 9 1990

 TIME/CDT COUNTY      EVENT
 2054     MAYES       DIME SIZE HAIL SOUTH SIDE OF PRYOR

 2100     MAYES       DIME SIZE HAIL NEAR SALINA

 2035     ROGERS      NICKLE SIZE HAIL 3 NORTHWEST OF INOLA

 2112     MAYES       DIME SIZE HAIL IN PRYOR

 2130     DELAWARE    DIME SIZE HAIL AT LAKE EUCHA 5 SW OF JAY

 2145     DELAWARE    DIME SIZE HAIL 9 WEST OF JAY

 2140     MAYES       NICKEL SIZE HAIL BETWEEN PRYOR AND SALINA

 2205     CHEROKEE    DIME SIZE HAIL 4 MILES WEST OF HULBERT

Local storm report, Apr 10, 3:01 AM CDT, 24 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
254 AM CDT TUE APR 10 1990

 TIME/CDT COUNTY      EVENT
 2 15 AM  CHEROKEE    60 MPH REPORTED IN TAHLEQUAH.

 2 10 AM  PITTSBURG   GOLFBALL SIZED HAIL NEAR `INDIANOLA.

 2 30 AM  HASKELL     STRONG WINDS (60 MPH) DOWNED POWERLINES NEAR KINTA.

 2 30 AM  LATIMER     DIME SIZE HAIL WEST OF WILBURTON.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 2:39 AM CDT	Severe Thunderstorm Warning	TSA	Crawford, Washington	66 min
Apr 10, 3:01 AM CDT	Severe Thunderstorm Warning	TSA	Franklin, Sebastian	59 min
Apr 10, 3:57 AM CDT	Severe Thunderstorm Warning	TSA	Logan, Scott	63 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1990 Every severe thunderstorm warning in 1990

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.