Alert archive / Illinois / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 420, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 23, 2000, 6:12 PM CDT for Adams County, Brown County, Illinois. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 23, 2000, 6:12 PM CDT (23:12 UTC)
- Expired
- Aug 23, 2000, 7:00 PM CDT
- In force
- 48 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Adams County, IL, Brown County, IL
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.2 hours before the alert went out and 187 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.
- Mixed-layer CAPE
- 1458 J/kg
- Mixed-layer CIN
- -156 J/kg
- Mixed-layer LCL
- 692 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 5.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KLSX 232312 SVRSTL ILC001-009-240000- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 612 PM CDT WED AUG 23 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN ADAMS COUNTY IN WEST CENTRAL ILLINOIS BROWN COUNTY IN WEST CENTRAL ILLINOIS * UNTIL 700 PM CDT * AT 612 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES NORTHWEST OF GOLDEN...MOVING SOUTHEAST AT 25 MPH. * LOCATIONS IN THE PATH... GOLDEN CAMP POINT CLAYTON BUCKHORN MOUNT STERLING SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. LAT...LON 4028 9107 4014 9123 3983 9083 3996 9056 TRUETT
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 St. Louis, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 23, 3:47 PM CDT, 2 hours 25 minutes earlier.
Area forecast discussion, Aug 23, 3:47 PM CDT, 2 hours 25 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 330 PM WED AUG 23 2000 CONVECTION HAS BGN TO DVLP THIS AFTN IN NERN MO AND S CNTRL MO ALNG OLD OUTFLOW BOUNDARIES S OF STNRY FNT EXTDG FM SRN NEBRASKA ENE THRU NRN IL. WKST CIN ACRS SRN MO AND A SMALL PORTION OF NERN MO WITH CAPE OVR 4000 J/KG OVR PARTS OF NERN MO. CONVECTION ACRS SRN MO SHOULD BE DIURNAL...WKNG JUST AFT SUNSET...BUT ACTIVITY SHOULD BCM MORE ORGANIZED ALONG STATIONARY FNT AS SHRTWV OVR NWRN IA ERN NE DROPS SEWD THRU ERN MO IL LTR TGT. MDLS DEPICT AN AREA OF UPR DIVERGENCE ACRS ERN MO CNTRL SRN IL TGT IN RGT ENTRANCE REGION OF ULJ STRK MOVG THRU OH VLY. NGM...ETA AND MESOETA FAIRLY SIMILIAR WITH HIGHEST QPF OVR NERN MO THIS EVNG DROPPING SEWD ALNG MISSISSIPPI RVR. 18Z MESOETA SHOW INDICATIONS OF AN MCS WITH CONVECTIVELY INDUCED VORT MAX AND OUTFLOW BOUNDARY...BUBBLE HI MOVG SWD THRU ERN MO LT TGT. WL INCRS POPS TGT WITH SEWD MOVG MCS LIKELY. PCPN CHANCES WL LIKELY SHIFT S THU AFTN AND EVNG WITH MCV AND OUFLOW BOUNDARY...ALTHOUGH STNRY FNT WL PROBABLY ONLY DROP AS FAR S AS NRN MO. TEMPS SHOULD BE A COUPLE OF DGRS COOLER THU WITH MRNG PCPN AND MCS CLOUD DEBRIS +INTO THE AFTN. .STL...NONE GKS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 7:28 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 62 min |
| Aug 22, 8:22 PM CDT | Severe Thunderstorm Warning | LSX | Brown, Pike | 53 min |
| Aug 22, 9:05 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene | 55 min |
| Aug 22, 9:38 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 52 min |
| Aug 22, 10:20 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 40 min |
| Aug 22, 10:55 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 35 min |
| Aug 22, 11:02 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 43 min |
| Aug 22, 11:33 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette | 42 min |
| Aug 23, 12:13 AM CDT | Severe Thunderstorm Warning | LSX | Marion | 62 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2000Every severe thunderstorm warning in 2000
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.