Alert archive / Iowa / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 143, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 19, 1994, 6:24 PM CDT for Chickasaw County, Iowa. It was in force for 66 min. 1 report 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
- Jul 19, 1994, 6:24 PM CDT (23:24 UTC)
- Expired
- Jul 19, 1994, 7:30 PM CDT
- In force
- 66 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Chickasaw County, IA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 19, 6:30 PM CDT | Tornado F1 | Fenton To, IA |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 11.4 hours before the alert went out and 224 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
- 44 J/kg
- Mixed-layer CIN
- -204 J/kg
- Mixed-layer LCL
- 892 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
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, Jul 19, 5:20 PM CDT, 1 hour 4 minutes before
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</html>Special weather statement, Jul 19, 5:21 PM CDT, 1 hour 3 minutes before
IAZ022-014-003-004-015-192315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 515 PM CDT TUE JUL 19 1994 ...THUNDERSTORMS BEGINNING TO DEVELOP ALONG THE IOWA/MINNESOTA BORDER NORTHWEST OF SPENCER... AT 510PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED STRONG THUNDERSTORMS DEVELOPING 30 MILES NORTHWEST OF SPENCER. THE THUNDERSTORMWERE MOVING NORTHEAST AT 15 MPH INTO MINNESOTA. HOWEVER...ADDITIONAL THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG A COLD FRONT OVER DICKINSON. CLAY...EMMET...PALO ALTO AND BUENA VISTA COUNTIES BEFORE 7PM. THE THUNDERSTORMS MAY BECOME SEVERE WITH LARGE HAIL AND STRONG WINDS...SO ALL PEOPLE IN THE IOWA LAKES REGION SHOULD BE ON THE LOOKOUT FOR RAPIDLY CHANGING WEATHER CONDITIONS. JUNGBLUTH
Special weather statement, Jul 19, 5:22 PM CDT, 1 hour 2 minutes before
IAZ022-014-003-004-015-192315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 515 PM CDT TUE JUL 19 1994 ...THUNDERSTORMS BEGINNING TO DEVELOP ALONG THE IOWA/MINNESOTA BORDER NORTHWEST OF SPENCER... AT 510PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED STRONG THUNDERSTORMS DEVELOPING 30 MILES NORTHWEST OF SPENCER. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 15 MPH INTO MINNESOTA. HOWEVER...ADDITIONAL THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG A COLD FRONT OVER DICKINSON... CLAY...EMMET...PALO ALTO AND BUENA VISTA COUNTIES BEFORE 7PM. THE THUNDERSTORMS MAY BECOME SEVERE WITH LARGE HAIL AND STRONG WINDS...SO ALL PEOPLE IN THE IOWA LAKES REGION SHOULD BE ON THE LOOKOUT FOR RAPIDLY CHANGING WEATHER CONDITIONS. JUNGBLUTH
Special weather statement, Jul 19, 6:10 PM CDT, 14 minutes before
IAZ004-005-015-200015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 610 PM CDT TUE JUL 19 1994 ...THUNDERSTORMS DEVELOPING OVER KOSSUTH...PALO ALTO AND EMMET COUNTIES... THUNDERSTORMS DEVELOPING FROM 15 MILES EAST OF SPENCER TO 50 MILES NORTHEAST OF SPENCER ARE EXPECTED TO MOVE EAST AND INTENSIFY THROUGH 7 PM. THE STRONGEST STORMS WILL MOVE ACROSS NORTHERN PALO ALTO AND NORTHERN KOSSUTH COUNTIES...INCLUDING THE CITIES OF EMMETSBURG AND BANCROFT BY 630 PM. PEOPLE IN THESE AREAS CAN EXPECT SMALL HAIL...GUSTY WINDS AND VERY HEAVY RAINS. SEVERE WEATHER MAY DEVELOP RAPIDLY...SO PEOPLE EAST OF LINE FROM COUNCIL BLUFFS TO STORM LAKE TO 40 MILES NORTHEAST OF SPENCER SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS THIS EVENING. JUNGBLUTH
Special weather statement, Jul 19, 6:15 PM CDT, 9 minutes before
IAZ006>011-016>019-026>029-038>040-200020- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 615 PM CDT TUE JUL 19 1994 ...VERY STRONG THUNDERSTORMS IN NORTHEAST IOWA... AT 610 PM CDT...NWS RADAR INDICATED VERY STRONG THUNDERSTORMS 5 MILES NORTH OF CHARLES CITY AND 10 MILES NORTHWEST OF NEW HAMPTON. THESE STORMS WERE MOVING EAST AT 30 MILES AN HOUR AND WILL BE AFFECTING MITCHELL...HOWARD...FLOYD... AND CHICKASAW COUNTIES. VERY STRONG THUNDERSTORMS WERE ALSO FORMING IN ADVANCE OF A EASTWARD MOVING COLD FRONT. THESE STORMS WERE IN EMMET AND KOSSUTH COUNTIES... AND SHOULD MOVE INTO WINNEBAGO COUNTY THROUGH 715 PM. THESE STORMS WILL PACK VERY HEAVY DOWNPOURS OF RAIN...1/2 HAIL...AND WINDS NEAR 40 MILES AN HOUR. BE PREPARED TO TAKE IMMEDIATE ACTION IF THESE STORMS APPROACH YOUR AREA. STAY TUNED TO COMMERCIAL MEDIA TO KEEP ABREAST OF THE LATEST WEATHER INFORMATION. DEWALD
Special weather statement, Jul 19, 6:18 PM CDT, 6 minutes before
IAZ006>011-016>019-026>029-038>040-200020- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 615 PM CDT TUE JUL 19 1994 ...VERY STRONG THUNDERSTORMS IN NORTHEAST IOWA... AT 610 PM CDT...NWS RADAR INDICATED VERY STRONG THUNDERSTORMS 5 MILES NORTH OF CHARLES CITY AND 10 MILES NORTHWEST OF NEW HAMPTON. THESE STORMS WERE MOVING EAST AT 30 MILES AN HOUR AND WILL BE AFFECTING MITCHELL...HOWARD...FLOYD... AND CHICKASAW COUNTIES. VERY STRONG THUNDERSTORMS WERE ALSO FORMING IN ADVANCE OF A EASTWARD MOVING COLD FRONT. THESE STORMS WERE IN EMMET AND KOSSUTH COUNTIES... AND SHOULD MOVE INTO WINNEBAGO COUNTY THROUGH 715 PM. THESE STORMS WILL PACK VERY HEAVY DOWNPOURS OF RAIN...1/2 H@AIL...AND WINDS NEAR 40 MILES AN HOUR. BE PREPARED TO TAKE IMMEDIATE ACTION IF THESE STORMS APPROACH YOUR AREA. STAY TUNED TO COMMERCIAL MEDIA TO KEEP ABREAST OF THE LATEST WEATHER INFORMATION. DEWALD
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 10:43 PM CDT | Severe Thunderstorm Warning | DMX | Benton | 37 min |
| Jul 19, 12:16 PM CDT | Severe Thunderstorm Warning | DMX | Grundy | 44 min |
| Jul 19, 1:25 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan | 29 min |
| Jul 19, 6:44 PM CDT | Tornado Warning | DMX | Palo Alto | 20 min |
| Jul 19, 6:44 PM CDT | Tornado Warning | DMX | Kossuth | 31 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1994Every severe thunderstorm warning in 1994
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.