Alert archive / Iowa / Tornado Warnings in 1993
Tornado Warning 14, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Jun 29, 1993, 8:17 PM CDT for Calhoun County, Greene County, Iowa. It was in force for 28 min.
The area
The counties it named.
The facts
- Issued
- Jun 29, 1993, 8:17 PM CDT (01:17 UTC)
- Expired
- Jun 29, 1993, 8:45 PM CDT
- In force
- 28 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Calhoun County, IA, Greene County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 1.3 hours before the alert went out and 183 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
- 3751 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1148 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 207 m²/s²
- Significant tornado parameter
- 2.6
- Supercell composite
- 16.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDSM 300117 TORDSM IAC025-073-300145- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DES MOINES IA 817 PM CDT TUE JUN 29 1993 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 845 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION(S)S... IN WEST CENTRAL IOWA ...SOUTHEASTERN CALHOUN COUNTY...NORTHERN GREENE COUNTY AT 815 PM CDT...THE IOWA HIGHWAY PATROL REPORTED A TORNADO SKIPPING ALONG THE GROUND 25 MILES SOUTHEAST OF FORT DODGE NEAR LOHRVILLE. THIS STORM WAS MOVING SOUTHEAST AT 30 MPH AND WILL BE BETWEEN PATON AND CHURDAN BY 835 PM. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS... OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS. SULLIVAN &
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.
In the hours before
Special weather statement, Jun 29, 7:00 PM CDT, 1 hour 17 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 700 PM CDT TUE JUN 29 1993 ...THUNDERSTORMS ACROSS NORTH CENTRAL AND NORTHEAST IOWA WERE PRODUCING VERY HEAVY RAINS... AT 700 PM STRONG THUNDERSTORMS WERE MOVING INTO THE MASON CITY METRO AREA. THESE THUNDERSTORMS HAVE PRODUCED VERY HEAVY RAINS... HAIL...GUSTY WINDS 35 TO 40 MILES AN HOUR AND LIGHTNING. THE STORMS WERE MOVING EAST AT 30 MILES AN HOUR AND WILL AFFECT THE MASON CITY METRO AREA AS WELL AS NORTHWOOD...MANLY AND CLEAR LAKE AREAS. GENERAL THUNDERSTORMS DOTTED THE REST OF NORTH CENTRAL AND NORTHEAST IOWA WEST OF HIGHWAY 150. THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. A TORNADO WATCH IS IN EFFECT UNTIL 11PM FOR ALL OF NORTH CENTRAL AND NORTHEAST IOWA. THIS IS A DANGEROUS WEATHER SITUATION AND MUST BE MONITORED CLOSELY. PEOPLE SHOULD TUNE IN THE RADIO...TV AND WEATHER RADIO FOR THE LATEST STORM INFORMATION. RR
Special weather statement, Jun 29, 7:08 PM CDT, 1 hour 9 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 700 PM CDT TUE JUN 29 1993 ...THUNDERSTORMS ACROSS NORTH CENTRAL AND NORTHEAST IOWA WERE PRODUCING VERY HEAVY RAINS... AT 700 PM STRONG THUNDERSTORMS WERE MOVING INTO THE MASON CITY METRO AREA. THESE THUNDERSTORMS HAVE PRODUCED VERY HEAVY RAINS... HAIL...GUSTY WINDS 35 TO 40 MILES AN HOUR AND LIGHTNING. THE STORMS WERE MOVING EAST AT 30 MILES AN HOUR AND WILL AFFECT THE MASON CITY METRO AREA AS WELL AS NORTHWOOD...MANLY AND CLEAR LAKE AREAS. GENERAL THUNDERSTORMS DOTTED THE REST OF NORTH CENTRAL AND NORTHEAST IOWA WEST OF HIGHWAY 150. THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. A TORNADO WATCH IS IN EFFECT UNTIL 11PM FOR ALL OF NORTH CENTRAL AND NORTHEAST IOWA. THIS IS A DANGEROUS WEATHER SITUATION AND MUST BE MONITORED CLOSELY. PEOPLE SHOULD TUNE IN THE RADIO...TV AND WEATHER RADIO FOR THE LATEST STORM INFORMATION. RR
Special weather statement, Jun 29, 7:43 PM CDT, 34 minutes before
IAZALL-300140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 743 PM CDT TUE JUN 29 1993 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF THE NORTH HALF OF IOWA UNTIL 11 PM. ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHWEST IOWA UNTIL MIDNIGHT... ...A FLASH FLOOD WATCH IS IN EFFECT FOR A SMALL PART OF EXTREME NORTHEAST IOWA TONIGHT... AT 732 PM CDT...INTENSE THUNDERSTORMS CONTINUED FROM NORTHWEST INTO NORTH CENTRAL IOWA. TH STORMS WERE LOCATED IN A 15 TO 20 MILE WIDE BAND EXTENDING FROM 35 MILES SOUTH OF SPENCER NEAR STORM LAKE...TO 10 MILES NORTHEAST OF MASON CITY NEAR MANLY. THESE STORMS CONTINUED TO PRODUCE TORRENTIAL RAINFALL...GUSTY WINDS...HAIL AND FREQUENT LIGHTNING. THE STORMS WERE LOCATED IN AND AREA OF STORMS AND SHOWERS GENERALLY NORTH OF A LINE FROM SIOUX CITY...TO FORT DODGE...TO NEAR DUBUQUE. OTHER SCATTERED SHOWERS WERE OCCURRING IN A 40 MILE WIDE AREA CENTERED FROM 20 MILES EAST OF WATERLOO NEAR INDEPENDENCE...TO 20 MILES NORTHEAST OF OTTUMWA NEAR RICHLAND. THE STORMS AND SHOWERS WERE MOVING EAST SOUTHEAST AT 40 MILES AN HOUR. JAK/BRF
Special weather statement, Jun 29, 7:43 PM CDT, 34 minutes before
IAZALL-300140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 743 PM CDT TUE JUN 29 1993 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF THE NORTH HALF OF IOWA UNTIL 11 PM. ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHWEST IOWA UNTIL MIDNIGHT... ...A FLASH FLOOD WATCH IS IN EFFECT FOR A SMALL PART OF EXTREME NORTHEAST IOWA TONIGHT... AT 732 PM CDT...INTENSE THUNDERSTORMS CONTINUED FROM NORTHWEST INTO NORTH CENTRAL IOWA. TH STORMS WERE LOCATED IN A 15 TO 20 MILE WIDE BAND EXTENDING FROM 35 MILES SOUTH OF SPENCER NEAR STORM LAKE...TO 10 MILES NORTHEAST OF MASON CITY NEAR MANLY. THESE STORMS CONTINUED TO PRODUCE TORRENTIAL RAINFALL...GUSTY WINDS...HAIL AND FREQUENT LIGHTNING. THE STORMS WERE LOCATED IN AND AREA OF STORMS AND SHOWERS GENERALLY NORTH OF A LINE FROM SIOUX CITY...TO FORT DODGE...TO NEAR DUBUQUE. OTHER SCATTERED SHOWERS WERE OCCURRING IN A 40 MILE WIDE AREA CENTERED FROM 20 MILES EAST OF WATERLOO NEAR INDEPENDENCE...TO 20 MILES NORTHEAST OF OTTUMWA NEAR RICHLAND. THE STORMS AND SHOWERS WERE MOVING EAST SOUTHEAST AT 40 MILES AN HOUR. JAK/BRF
Special weather statement, Jun 29, 8:03 PM CDT, 14 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 803 PM CDT TUE JUN 29 1993 ...STRONG THUNDERSTORMS ARE GOING TO SPREAD THROUGH NORTHEAST IOWA... AT 8 PM A LINE OF STRONG THUNDERSTORMS WAS OCCURRING FROM 30 MILES SOUTH OF MASON CITY AND EXTENDING NORTHEAST TO THE MINNESOTA BORDER 35 MILES NORTHEAST OF MASON CITY. THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAINFALL...SMALL HAIL AND WINDS OF 40 MPH. PEOPLE IN THE CITIES OF NEW HAMPTON...NASHUA...CLARKSVILLE AND DUMONT SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND SEEK APPROPRIATE SHELTER AS THESE STORMS MOVE IN BY 830 PM. A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 PM CDT. COLLAR/GOODSON
Special weather statement, Jun 29, 8:04 PM CDT, 13 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 803 PM CDT TUE JUN 29 1993 ...STRONG THUNDERSTORMS ARE GOING TO SPREAD THROUGH NORTHEAST IOWA... AT 8 PM A LINE OF STRONG THUNDERSTORMS WAS OCCURRING FROM 30 MILES SOUTH OF MASON CITY AND EXTENDING NORTHEAST TO THE MINNESOTA BORDER 35 MILES NORTHEAST OF MASON CITY. THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAINFALL...SMALL HAIL AND WINDS OF 40 MPH. PEOPLE IN THE CITIES OF NEW HAMPTON...NASHUA...CLARKSVILLE AND DUMONT SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND SEEK APPROPRIATE SHELTER AS THESE STORMS MOVE IN BY 830 PM. A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 PM CDT. COLLAR/GOODSON
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 7:05 PM CDT | Tornado Warning | DMX | Humboldt, Pocahontas | 25 min |
| Jun 29, 7:18 PM CDT | Flash Flood Warning | DMX | Kossuth, Palo Alto, Pocahontas | 3 hr |
| Jun 29, 7:26 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 24 min |
| Jun 29, 7:27 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 33 min |
| Jun 29, 7:34 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 26 min |
| Jun 29, 8:01 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Humboldt, Webster, Wright | 29 min |
| Jun 29, 8:23 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 52 min |
| Jun 29, 8:38 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 37 min |
| Jun 29, 8:44 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Grundy | 46 min |
| Jun 29, 8:44 PM CDT | Tornado Warning | DMX | Calhoun | 31 min |
| Jun 29, 8:50 PM CDT | Tornado Warning | DMX | Boone, Greene | 25 min |
| Jun 29, 8:53 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 52 min |
| Jun 29, 8:57 PM CDT | Tornado Warning | DMX | Crawford | 33 min |
| Jun 29, 9:01 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Sac | 29 min |
| Jun 29, 9:20 PM CDT | Tornado Warning | DMX | Jasper, Polk, Story | 25 min |
| Jun 29, 9:25 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan, Fayette | 65 min |
| Jun 29, 9:28 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 32 min |
| Jun 29, 9:36 PM CDT | Severe Thunderstorm Warning | DMX | Benton, Tama | 54 min |
| Jun 29, 9:37 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Jasper, Polk | 68 min |
| Jun 29, 9:49 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 26 min |
| Jun 29, 10:00 PM CDT | Tornado Warning | DMX | Jasper, Polk | 26 min |
| Jun 29, 10:15 PM CDT | Flash Flood Warning | DMX | Boone | 96 min |
| Jun 30, 12:21 AM CDT | Flash Flood Warning | DMX | Decatur, Ringgold | 66 min |
| Jun 30, 3:01 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 29 min |
Nearby
Tornado Warnings in Iowa, 1993Every tornado warning in 1993Tornadoes in 1993
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.