Alert archive / Illinois / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 8, NWS Lincoln, IL

April 5, 2001Schuyler County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 5, 2001, 10:31 AM CDT for Schuyler County, Illinois. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Apr 5, 2001, 10:31 AM CDT (15:31 UTC)
Expired: Apr 5, 2001, 11:30 AM CDT
In force: 59 min
Issued by: NWS Lincoln, IL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Schuyler County, IL

The radar

The Lincoln radar (KILX), 120 km from the middle of the area, began a volume at 15:31 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

Davenport, (KDVN), launched 12:00Z, 3.5 hours before the alert went out and 157 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: 1525 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 240 m²/s²
0-3 km storm-relative helicity: 310 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 
WUUS53 KILX 051532
SVRSPI
ILC169-051630-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING LINCOLN IL
NATIONAL WEATHER SERVICE
1031 AM CDT THU APR 5 2001

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SCHUYLER COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 1130 AM CDT

* AT 1031 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES NORTHWEST OF BROOKLYN...OR ABOUT 14
  MILES SOUTHEAST OF CARTHAGE...MOVING SOUTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BROOKLYN
  LITTLETON
  RUSHVILLE

THIS STORM IS CAPABLE OF PRODUCING WINDS IN EXCESS OF 60 MPH...
DAMAGING HAIL...FREQUENT LIGHTNING...AND VERY HEAVY RAIN. TAKE
SHELTER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

REPORT SEVERE WEATHER OR ANY STORM DAMAGE TO YOUR LOCAL ESDA...OR THE
NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER
SERVICE. STrAY TUNED FOR LATER STATEMENTS.

LAT...LON 4029 9093 4019 9092 4007 9049 4027 9045

HEDGES

NNNN

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 Apr 5, 2:54 AM CDT, 7 hours 37 minutes earlier.

Area forecast discussion, Apr 5, 2:54 AM CDT, 7 hours 37 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
254 AM CDT THU APR 5 2001

RIDGE STILL INFLUENCING CWA AS OF 06Z WITH DEWPTS IN THE UPPER 20S
TO MID 30S. JUST WEST OF CWA...DEWPTS IN THE MID TO UPPER 40S. AS
FOR WF/SF TO S OF IL...WRN SECTION BEGINING TO LIFT N INTO SRN
KS...N OF THIS AREA IS WHERE MCS ACTIVITY SHOULD BEGIN TO
FIRE...NEAR KANSAS CITY. ANOTHER AREA OF POSSIBLE MCS ACTIVITY
FURTHER SW IN SWRN KS HAS FIRED UP OVER THE PAST HOUR...BUT BOTH AVN
AND ETA QUICKLY WEAKEN THIS AREA AND FOCUS FURTHER TO THE NE.

FOR CWA...MAIN PROBLEM TODAY WILL BE THE WF LIFTING N OVER CWA AND
ANY RESIDUAL MCS ACTIVITY...ESPECIALLY OVER NWRN HALF OF CWA. NO
MAJOR CHANGES TO ZONES AT THIS TIME WITH CHANCE POPS FOR MOST OF
CWA...WILL KEEP IT DRY IN OUR SE. CLOUDS WILL TEMPER TEMPERATURES
TODAY...SO KEEP THEM A LITTLE WARMER THAN YESTERDAY/S HIGHS.

BY TONIGHT...SYSTEM LAYS OUT SW TO NE JUST N OF CWA...SO WILL KEEP
LIKELY POPS IN NRN ZONES...CHANCE POPS ELSEWHERE.

ON FRIDAY...CWA IS IN WARM SECTOR WITH MORE HIT AND MISS RWS/TRWS
...SO WILL KEEP CHANCE POPS FOR EVERYONE. MAIN QUESTION WILL BE THE
TEMPS...CONTINUE TO HAVE A MIX OF CLOUDS AND SUN...BUT STRONG
SOUTHERLY WINDS WILL WARM US UP NICELY. MAV NUMBERS SEEM TOO
HIGH...SO WILL COMPROMISE BETWEEN FWC AND FAN.

STILL LOOKS INTERESTING FOR FRIDAY NIGHT/SATURDAY MORNING AS LOW
STRENGTHENS CONSIDERABLY...COULD SEE A FAST MOVING SQUALL LINE THRU
MOST OF CWA JUST AFTER MIDNIGHT. AS FOR REST OF EXTENDED...BACKED
OFF ON SHOWERS FOR CWA ON SUNDAY...EXCEPT SE COUNTIES. NO OTHER
CHANGES TO EXTENDED AT THIS TIME...AS MRF NOT IN YET.

...PRELIMINARY NUMBERS FOR COORDINATION ONLY...

SPI EE 072/058 075/057 073 68454
PIA WW 068/056 072/055 070 68565
DEC EE 071/058 075/057 073 68454
CMI EE 070/057 075/056 072 68354
MTO EE 073/058 076/058 073 68354
LWV EE 075/060 077/061 074 68234

.ILX...NONE.

$$W
BYRD

In the hours before

Special weather statement, Apr 5, 6:00 AM CDT, 4 hours 31 minutes before

ILZ027>031-036>038-040>057-061>063-066>068-071>073-051600-

HAZARDOUS WEATHER OUTLOOK FOR CENTRAL ILLINOIS
NATIONAL WEATHER SERVICE LINCOLN IL
600 AM CDT THU APR 5 2001

A WARM FRONT...CURRENTLY TO THE SOUTH OF ILLINOIS...WILL BEGIN TO
MOVE TO THE NORTH TODAY. AS IT MOVES THROUGH CENTRAL AND SOUTHEAST
ILLINOIS IT WILL TRIGGER SHOWERS AND THUNDERSTORMS.

SOME OF THESE STORMS MAY BECOME SEVERE...MAINLY ALONG AND NORTH OF
I-72...SO SPOTTER, ACTIVATION MAY BE NEEDED THIS AFTERNOON AND
EVENING IN THIS AREA.

BYRD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 10:15 AM CDT	Severe Thunderstorm Warning	ILX	Knox	45 min
Apr 5, 11:43 AM CDT	Severe Thunderstorm Warning	ILX	Fulton	62 min
Apr 5, 12:47 PM CDT	Severe Thunderstorm Warning	ILX	Fulton	43 min
Apr 5, 2:51 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt	39 min
Apr 5, 3:16 PM CDT	Severe Thunderstorm Warning	ILX	Logan, Macon, Sangamon	59 min
Apr 5, 4:07 PM CDT	Severe Thunderstorm Warning	ILX	Macon, Moultrie, Shelby	53 min
Apr 5, 4:53 PM CDT	Severe Thunderstorm Warning	ILX	Moultrie	52 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2001 Every severe thunderstorm warning in 2001

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.