Alert archive / Illinois / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 34, NWS Lincoln, IL

May 12, 2010Crawford County, Lawrence County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 12, 2010, 5:18 AM CDT for Crawford County, Lawrence County, Illinois. It was in force for 27 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: May 12, 2010, 5:18 AM CDT (10:18 UTC)
Expired: May 12, 2010, 5:45 AM CDT
In force: 27 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Crawford County, IL, Lawrence County, IL

The radar

The Evansville,IN radar (KVWX), 67 km from the middle of the area, began a volume at 10:21 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

Lincoln, IL (KILX), launched 00:00Z, 10.3 hours before the alert went out and 161 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: 902 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 May 12, 2:45 AM CDT, 2 hours 33 minutes earlier.

Area forecast discussion, May 12, 2:45 AM CDT, 2 hours 33 minutes before

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Hazardous weather outlook, May 11, 2:46 PM CDT, 14 hours 32 minutes before

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In the hours before

Special weather statement, May 12, 3:45 AM CDT, 1 hour 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
345 AM CDT WED MAY 12 2010

ILZ067-071-072-120930-
CLAY-JASPER-RICHLAND-
345 AM CDT WED MAY 12 2010

...SIGNIFICANT WEATHER ALERT FOR CLAY...SOUTHWESTERN JASPER AND
WESTERN RICHLAND COUNTIES UNTIL 430 AM CDT...

AT 343 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES NORTHEAST OF XENIA...OR 7 MILES WEST OF
FLORA...MOVING NORTHEAST AT 40 MPH.

NICKEL SIZE HAIL...AND WINDS AROUND 50 MPH ARE EXPECTED WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
  LOUISVILLE...
  FLORA...
  BIBLE GROVE...
  CLAY CITY...
  SAILOR SPRINGS...
  INGAHAM...

OTHER LOCATIONS AFFECTED INCLUDE...OSKALOOSA...WENDELIN AND
WAKEFIELD.

PEOPLE NEAR THESE LOCATIONS SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. LISTEN FOR POSSIBLE WARNINGS...AND BE PREPARED TO TAKE
APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

LAT...LON 3861 8870 3882 8870 3899 8807 3865 8802
TIME...MOT...LOC 0845Z 245DEG 36KT 3871 8857

GEELHART

Special weather statement, May 12, 4:32 AM CDT, 46 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
432 AM CDT WED MAY 12 2010

ILZ062-066-067-121015-
CUMBERLAND-EFFINGHAM-JASPER-
432 AM CDT WED MAY 12 2010

...SIGNIFICANT WEATHER ALERT FOR EFFINGHAM...NORTHWESTERN JASPER AND
SOUTHWESTERN CUMBERLAND COUNTIES UNTIL 515 AM CDT...

AT 428 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR ST. ELMO...OR 16 MILES SOUTHWEST OF
EFFINGHAM...MOVING NORTHEAST AT 45 MPH.

PENNY SIZE HAIL IS EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  WATSON...
  EFFINGHAM...
  TEUTOPOLIS...
  DIETERICH...
  MONTROSE...
  WHEELER...

OTHER LOCATIONS AFFECTED INCLUDE...ALTAMONT RESERVOIR...LAKE SARA...
HEARTVILLE...WOODBURY AND GILA.

PEOPLE NEAR THESE LOCATIONS SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. LISTEN FOR POSSIBLE WARNINGS...AND BE PREPARED TO TAKE
APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

LAT...LON 3922 8846 3932 8819 3897 8819 3892 8878
      3915 8881
TIME...MOT...LOC 0932Z 247DEG 37KT 3902 8876

GEELHART

Special weather statement, May 12, 4:47 AM CDT, 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
447 AM CDT WED MAY 12 2010

ILZ071-072-121015-
CLAY-RICHLAND-
447 AM CDT WED MAY 12 2010

...SIGNIFICANT WEATHER ALERT FOR RICHLAND AND SOUTHEASTERN CLAY
COUNTIES UNTIL 515 AM CDT...

AT 444 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES SOUTHWEST OF SCHNELL...OR 11 MILES
SOUTHEAST OF FLORA...MOVING NORTHEAST AT 45 MPH.

PENNY SIZE HAIL...AND WINDS AROUND 50 MPH ARE EXPECTED WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
  NOBLE...
  PARKERSBURG...
  CALHOUN...
  OLNEY...
  CLAREMONT...

PEOPLE NEAR THESE LOCATIONS SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. LISTEN FOR POSSIBLE WARNINGS...AND BE PREPARED TO TAKE
APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

LAT...LON 3858 8815 3860 8816 3860 8835 3866 8839
      3886 8792 3857 8792 3857 8814
TIME...MOT...LOC 0947Z 243DEG 38KT 3859 8828

GEELHART

Special weather statement, May 12, 5:11 AM CDT, 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
511 AM CDT WED MAY 12 2010

ILZ073-121045-
LAWRENCE-
511 AM CDT WED MAY 12 2010

...SIGNIFICANT WEATHER ALERT FOR LAWRENCE COUNTY UNTIL 545 AM CDT...

AT 507 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR CALHOUN...OR 6 MILES SOUTHEAST OF OLNEY...
MOVING NORTHEAST AT 45 MPH.

PENNY SIZE HAIL...AND WINDS AROUND 50 MPH ARE EXPECTED WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
  SUMNER...
  BRIDGEPORT...
  CHAUNCEY...
  LAWRENCEVILLE...
  BIRDS...

OTHER LOCATIONS AFFECTED INCLUDE...HELENA...RED HILLS STATE PARK...
PETROLIA...PINKSTAFF AND LAWRENCEVILLE AIRPORT.

PEOPLE NEAR THESE LOCATIONS SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. LISTEN FOR POSSIBLE WARNINGS...AND BE PREPARED TO TAKE
APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

LAT...LON 3867 8756 3867 8758 3864 8762 3860 8762
      3858 8764 3857 8792 3885 8791 3885 8755
      3876 8750 3875 8750
TIME...MOT...LOC 1011Z 247DEG 37KT 3869 8795

GEELHART

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 3:03 AM CDT	Flash Flood Watch	ILX	Cass, Fulton, Knox, Logan, McLean, Marshall and 10 more	36 hr
May 12, 3:45 AM CDT	Special Weather Statement	ILX	Clay, Richland	45 min
May 12, 4:32 AM CDT	Special Weather Statement	ILX	Cumberland, Effingham	43 min
May 12, 4:47 AM CDT	Special Weather Statement	ILX	Richland	28 min
May 12, 5:11 AM CDT	Special Weather Statement	ILX	Lawrence	34 min
May 12, 5:40 AM CDT	Areal Flood Advisory	ILX	Cumberland, Effingham, Jasper, Shelby	4 hr
May 12, 5:52 AM CDT	Special Weather Statement	ILX	Clay, Effingham, Jasper, Richland	38 min
May 12, 6:24 AM CDT	Special Weather Statement	ILX	Crawford, Jasper, Lawrence, Richland	66 min
May 12, 6:35 AM CDT	Areal Flood Advisory	ILX	Clay, Crawford, Jasper, Lawrence, Richland	3 hr
May 12, 9:00 AM CDT	River Flood Warning	ILX	Clay, Richland	5 days
May 12, 9:30 AM CDT	Areal Flood Advisory	ILX	Clay, Crawford, Lawrence, Richland	2 hr
May 12, 12:49 PM CDT	Special Weather Statement	ILX	Fulton	41 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2010 Every severe thunderstorm warning in 2010

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.