Alert archive / Illinois / Tornado Warnings in 2000
Tornado Warning 49, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Aug 23, 2000, 8:44 PM CDT for Montgomery County, Illinois. It was in force for 46 min. 2 reports 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
- Aug 23, 2000, 8:44 PM CDT (01:44 UTC)
- Expired
- Aug 23, 2000, 9:30 PM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Montgomery County, IL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 23, 9:10 PM CDT | Hail 0.88 | Witt, IL | |
| Aug 23, 9:20 PM CDT | Hail 2.75 | Irving, IL |
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, 1.7 hours before the alert went out and 127 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
- 1082 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 1541 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KLSX 240144 TORSTL ILC135-240230- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 844 PM CDT WED AUG 23 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... MONTGOMERY COUNTY IN CENTRAL ILLINOIS * UNTIL 930 PM CDT * AT 844 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR RAYMOND...MOVING SOUTHEAST AT 25 MPH. * LOCATIONS IN THE PATH... RAYMOND HONEY BEND BUTLER HILLSBORO IRVING FILLMORE CHAPMAN COFFEEN IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW! A BASEMENT OFFERS THE BEST PROTECTION. IF A BASEMENT IS NOT AVAILABLE...MOVE TO THE LOWEST FLOOR AND SEEK SHELTER IN A SMALL INTERIOR ROOM. STAY AWAY FROM OUTSIDE WALLS AND WINDOWS. MOBILE HOMES SHOULD BE ABANDONED IN FAVOR OF A MORE SUBSTANTIAL STRUCTURE. DO NOT TRY TO OUTRUN A TORNADO IN A VEHICLE. LAT...LON 3947 8961 3933 8976( 3898 8930 3924 8924 TRUETT
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Aug 23, 3:47 PM CDT, 4 hours 57 minutes earlier.
Area forecast discussion, Aug 23, 3:47 PM CDT, 4 hours 57 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 23, 8:25 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 50 min |
| Aug 23, 9:29 PM CDT | Tornado Warning | LSX | Montgomery | 31 min |
| Aug 23, 9:43 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette | 62 min |
| Aug 23, 10:19 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 56 min |
| Aug 23, 10:58 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 47 min |
| Aug 23, 11:16 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Montgomery | 59 min |
| Aug 23, 11:21 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 54 min |
| Aug 23, 11:28 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 62 min |
| Aug 23, 11:51 PM CDT | Severe Thunderstorm Warning | LSX | Jersey | 39 min |
| Aug 24, 12:09 AM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 66 min |
| Aug 24, 12:11 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 49 min |
| Aug 24, 12:27 AM CDT | Flash Flood Warning | LSX | Bond, Fayette, Macoupin, Marion, Montgomery | 6 hr |
Nearby
Tornado Warnings in Illinois, 2000Every tornado warning in 2000Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.