Alert archive / Illinois / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 20, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Mar 27, 1991, 3:18 PM CST for DeKalb County, Illinois. It was in force for 27 min.
The area
The counties it named.
The facts
- Issued
- Mar 27, 1991, 3:18 PM CST (21:18 UTC)
- Expired
- Mar 27, 1991, 3:45 PM CST
- In force
- 27 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County DeKalb County, IL
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.3 hours before the alert went out and 293 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1516 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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
Special weather statement, Mar 27, 9:54 AM CST, 5 hours 24 minutes before
ILZ005>007-009-271830- WEATHER UPDATE FOR PEORIA AND WEST CENTRAL ILLINOIS NATIONAL WEATHER SERVICE PEORIA IL 945 AM CST WED MAR 27 1991 ...PERIODS OF SHOWERS AND THUNDERSTORMS TO REDEVELOPE TOODAY...SOME MAY BE SEVERE MAINLY THIS AFTERNOON... THE STRONG THUNDERSTORMS HAVE MOVED OUT OF WEST CENTRAL ILLINOIS FOR THE TIME BEING AND ONLY A FEW SHOWERS REMAIN IN THE GALESBURG AREA AS OF 945 AM. WE MAY SEE A LITTLE SUN THIS MORNING BUT THUNDERSTORMS %ARE EXPECTED TO REDEVELOPE BY AFTERNOON. TEMPERATURES SHOULD RISE INTO THE UPPER 60S BY MID DAY AND WINDS WILL REMAIN SOUTHERLY AT 10 TO 15 MPH THIS MORNING. BREESER
Special weather statement, Mar 27, 11:03 AM CST, 4 hours 15 minutes before
ILZ009-010-271815- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 1100 AM CST WED MAR 27 1991 ...SHOWERS AND THUNDERSTORMS TO REDEVELOPE ACROSS CENTRAL ILLINOIS ...SOME MAY BE SEVERE THIS AFTERNOON... AT 1055 AM...SHOWERS AND THUNDERSTORMS HAVE MOVED OUT OF CENTRAL AND EAST CENTRAL ILLINOIS AT THIS TIME. SHOWERS AND THUNDERSTORMS WILL REDEVELOPE THIS AFTERNOON...SOME MAY BE SEVERE. PERSONS ARE URGE TO LISTEN TO RADIO..TV..OR NOAA WEATHER RADIO FOR LATER STATEMENTS AND POSSIABLE WATCHES OR WARNINGS. PARTLY TO MOSTLY CLOUDY SKIES WILL CONTINUE ACROSS CENTRAL ILLINOIS WITH TEMPERATURES CLIMBING INTO THE LOW TO MID 70S THIS AFTERNOON. ATTN ISP DISTS...6...9...10...18 AND 12 HILLIARD
Special weather statement, Mar 27, 11:18 AM CST, 4 hours before
ILZ005>007-009-271930- WEATHER UPDATE FOR PEORIA AND WEST CENTRAL ILLINOIS NATIONAL WEATHER SERVICE PEORIA IL 1115 AM CST WED MAR 27 1991 ...PERIODS OF SHOWERS AND THUNDERSTORMS TO REDEVELOP TODAY...SOME MAY BE SEVERE MAINLY THIS AFTERNOON... NO PRECIPITATION WAS DETECTED BY RADAR ACROSS WEST CENTRAL ILLINOIS AS OF 11AM THIS MORNING...HOWEVER THE POTENTIAL STILL EXISTS FOR SHOWER AND THUNDERSTORM DEVELOPMENT THROUGH THE EARLY AFTERNOON HOURS. TEMPERATURES HAD RISEN TO 70 BY LATE MORNING AND WINDS PICKED UP CONSIDERABLY TO 20 TO 25 MPH...GUSTING AS HIGH AS 38 MPH. TEMPERATURES WILL CONTINUE TO RISE THIS AFTERNOON...REACHING THE MID 70 LATER THIS AFTERNOON. WINDS WILL CONTINUE STRONG AND GUSTY...ESPECIALLY IN THUNDERSTORMS. BREESER
Special weather statement, Mar 27, 2:15 PM CST, 1 hour 3 minutes before
ILZ009-010-272100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 215 PM CST WED MAR 27 1991 ...TORNADO WATCH IN EFFECT UNTIL 10 PM CST... SKIES ACROSS THE AREA CONTINUE TO BE PARTLY SUNNY WITH VERY STRONG WINDS FROM THE SOUTH TO SOUTHWEST. HERE AT CAPITOL AIRPORT GUSTS TO 63 MPH (55 KNOTS) WERE RECORDED AT 157 PM CST. GUSTS OVER 50 KNOTS ARE POSSIBLE FOR THE REMAINDER OF THIS AFTERNOON AND EVENING. TREE LIMBS AND SCREEN DOORS AS WELL AS OTHER LIGHT WEIGHT OBJECTS COULD BE DAMAGED FROM THESE VERY STRONG WINDS. THUNDERSTORMS COULD DEVELOP RAPIDLY THIS AFTERNOON...SO BE ON THE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND LISTEN TO RADIO...TV...OR NOAA WEATHER RADIO FOR FURTHER UPDATES AND POSSIBLE WATCHES OR WARNINGS. MUNDY ATTN ISP DIST 6...9...10...18 AND 12
Special weather statement, Mar 27, 3:02 PM CST, 16 minutes before
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</html>The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 26, 9:15 PM CST | Severe Thunderstorm Warning | ILX | Hancock | 60 min |
| Mar 26, 9:15 PM CST | Severe Thunderstorm Warning | ILX | McDonough | 105 min |
| Mar 26, 10:25 PM CST | Severe Thunderstorm Warning | ILX | Fulton | 65 min |
| Mar 26, 10:36 PM CST | Severe Thunderstorm Warning | ILX | Peoria | 2 hr |
| Mar 26, 11:04 PM CST | Severe Thunderstorm Warning | ILX | Tazewell, Woodford | 56 min |
| Mar 26, 11:32 PM CST | Severe Thunderstorm Warning | ILX | Marshall | 58 min |
| Mar 26, 11:55 PM CST | Severe Thunderstorm Warning | ILX | Knox, Warren | 65 min |
| Mar 27, 12:32 AM CST | Severe Thunderstorm Warning | ILX | Bureau | 28 min |
| Mar 27, 12:09 PM CST | Severe Thunderstorm Warning | ILX | Henderson, Warren | 66 min |
| Mar 27, 1:04 PM CST | Severe Thunderstorm Warning | ILX | Carroll, Stephenson | 26 min |
| Mar 27, 1:31 PM CST | Severe Thunderstorm Warning | ILX | Lee, Ogle, Stephenson, Winnebago | 44 min |
| Mar 27, 1:46 PM CST | Tornado Warning | ILX | Ogle, Winnebago | 44 min |
| Mar 27, 2:07 PM CST | Severe Thunderstorm Warning | ILX | Boone | 53 min |
| Mar 27, 2:07 PM CST | Severe Thunderstorm Warning | ILX | Lee | 53 min |
| Mar 27, 2:25 PM CST | Severe Thunderstorm Warning | ILX | Peoria | 35 min |
| Mar 27, 2:30 PM CST | Tornado Warning | ILX | Lee, Ogle | 30 min |
| Mar 27, 2:30 PM CST | Tornado Warning | ILX | Boone, Winnebago | 30 min |
| Mar 27, 2:44 PM CST | Severe Thunderstorm Warning | ILX | Marshall, Putnam | 31 min |
| Mar 27, 3:00 PM CST | Severe Thunderstorm Warning | ILX | Peoria | 30 min |
| Mar 27, 3:13 PM CST | Severe Thunderstorm Warning | ILX | Marshall, Woodford | 22 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1991Every severe thunderstorm warning in 1991
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.