Alert archive / Illinois / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 48, NWS Lincoln, IL

June 25, 1997Crawford County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 25, 1997, 7:33 PM CDT for Crawford County, Illinois. It was in force for 27 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: Jun 25, 1997, 7:33 PM CDT (00:33 UTC)
Expired: Jun 25, 1997, 8:00 PM CDT
In force: 27 min
Issued by: NWS Lincoln, IL
Area: Whole counties

County Crawford County, IL

What was reported inside it

Time	Report	Where	Remark
Jun 25, 7:49 PM CDT	Thunderstorm Wind	Oblong, IL	Thunderstorm winds blew down numerous large tree limbs in Oblong. No injuries were reported and no damage estimate was available.

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 nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.6 hours before the alert went out and 146 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: 717 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 890 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 0 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.

965 
WUUS1 KSPI 260034 RRA
SVRSPI
ILC033-260100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
733 PM CDT WED JUN 25 1997

* SEVERE THUNDERSTORM WARNING FOR
  CRAWFORD COUNTY IN SOUTHEASTERN ILLINOIS

* UNTIL 800 PM CDT
 
* SOME LOCATIONS AFFECTED
  ROBINSON
  GORDON
  PALESTINE

* AT 730 PM CDT LAW ENFORCEMENT OFFICIALS REPORTED A SEVERE
  THUNDERSTORM NEAR ROBINSON...MOVING EAST AT 15 MPH.

* 1 INCH HAIL WAS REPORTED BY CRAWFORD COUNTY SHERIFF IN ROBINSON.

THIS STORM IS CAPABLE OF PRODUCING LARGE HAIL. GET INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.


KETCHAM
 

&

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 Lincoln, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 25, 2:09 PM CDT, 5 hours 24 minutes earlier.

Area forecast discussion, Jun 25, 2:09 PM CDT, 5 hours 24 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
200 PM CDT WED JUN 25 1997

WILL KEEP THIS SHORT AS TSRA BEGINNING FIRE ACROSS IL. CLD FRONT
SHOWING UP NICELY ON 88D LOCATED FROM JUST SOUTH OF LOT TO PIA TO UIN.
NICE TEMP GRAD FROM PIA (84) TO ILX (91) WITH WINDS SHIFTED TO THE NW
AT PIA.  ALSO LOTS OF TCU OVHD AT ILX.  BELIEVE TSRA WILL FILL IN ALONG
THE FRONT WITH HVY RAIN STILL A GOOD POSSIBILITY AT LEAST THROUGH THE
EVE HOURS...AS VORT MAX ACROSS NWRN MO MOVES EAST INTO IL.  LIKED ETA
PLACEMENT OF SFC FEATURES AND TIMING OF FRONT ACROSS IL.  WITH FRONT
GOING PARALLEL TO UPR FLOW...FRONT WILL BE SLOW TO PROGRESS ACROSS AREA
SO ECHO TRAINING POSSIBLE.  NICE THETA E RIDGE ACROSS AREA WITH HI PW'S.

CLRG TREND MAY NEED TO PUSHED BACK TILL THE LATE EVE TOWARDS 06Z WITH
THE SLOW MOVEMENT.

GOING TREND OF DRIER AIR LOOKS OKAY WITH SFC RIDGE BUILDING IN FOR THU.
FWC APPEARS TO HI WITH FAN TOO COOL.  SO A COMPROMISE BETWEEN rTHE TWO
LOOKS BEST.

PIA   63/85  60
SPI   65/85  +0
DEC   65/86  +0
CMI   67/86  +4
LWV   67/86  +6

KETCHAM

KETCHAM

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 25, 7:15 PM CDT	Severe Thunderstorm Warning	ILX	Richland	30 min
Jun 25, 7:41 PM CDT	Severe Thunderstorm Warning	ILX	Jasper	34 min
Jun 25, 8:27 PM CDT	Severe Thunderstorm Warning	ILX	Crawford	33 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1997 Every severe thunderstorm warning in 1997

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.