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![Page 1: William Browder Director of Operations, Association of American Railroads William Browder Director of Operations, Association of American Railroads WEATHER.](https://reader036.fdocuments.net/reader036/viewer/2022072017/56649f055503460f94c19f96/html5/thumbnails/1.jpg)
William BrowderDirector of Operations,
Association of American Railroads
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
Railway Perspective Railway Perspective
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• PRECIPITATION
• TEMPERATURES
• VISIBILITY
• WINDS
• PRECIPITATION
• TEMPERATURES
• VISIBILITY
• WINDS
OVERVIEWOVERVIEW
Weather Information Needs / Requirements Results Weather Information Needs / Requirements Results
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• Frozen Precipitation - General
Condition Action* Lead-time– Frozen Precipitation Maintain safe Operator's
transportation. Discretion
– Freezing Rain/Icing Clear tracks and 2-hrs power rails/wires.
– Inclement weather Rail schedules 1-2 hrs leading to early altered. Add release of commuters passenger cars.
– Snowfall/Drifting snowMobilize staff. 24 hrs (optimum) Icing/Freezing Rain Stage equipment. 8-hrs (minimum)
*Accumulation and lead-time affect the decision process
• Frozen Precipitation - General
Condition Action* Lead-time– Frozen Precipitation Maintain safe Operator's
transportation. Discretion
– Freezing Rain/Icing Clear tracks and 2-hrs power rails/wires.
– Inclement weather Rail schedules 1-2 hrs leading to early altered. Add release of commuters passenger cars.
– Snowfall/Drifting snowMobilize staff. 24 hrs (optimum) Icing/Freezing Rain Stage equipment. 8-hrs (minimum)
*Accumulation and lead-time affect the decision process
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
Precipitation Precipitation
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• Frozen Precipitation - Specific
Condition (Preparation) Action* Lead-time– Snowfall 0-2" Mobilize staff. Stage 24-hrs
equipment. 8-hrs min.
– Snowfall 2-6" Initiate appropriate action 12-hrsplan.
– Snowfall 6-8" Initiate appropriate action 12-hrsplan.
– Snowfall > 8" Initiate appropriate action 12-hrsplan.
*Accumulation and lead-time affect the decision process
• Frozen Precipitation - Specific
Condition (Preparation) Action* Lead-time– Snowfall 0-2" Mobilize staff. Stage 24-hrs
equipment. 8-hrs min.
– Snowfall 2-6" Initiate appropriate action 12-hrsplan.
– Snowfall 6-8" Initiate appropriate action 12-hrsplan.
– Snowfall > 8" Initiate appropriate action 12-hrsplan.
*Accumulation and lead-time affect the decision process
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
Precipitation Precipitation
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• Frozen Precipitation - Specific
Condition (Execution) Action* Lead-time– Snowfall 0-2" Mobilize staff. Stage 24-hrs
equipment. Maintain Ops. 8-hrs min.
– Snowfall 2-6" Maintain Ops. Rail Real-time.restrictions optional.
– Snowfall 6-8" Maintain Ops. Service Real-time. delayed or altered.
– Snowfall > 8" Reduced operations. Real-time.Suspend operations.
*Accumulation and lead-time affect the decision process
• Frozen Precipitation - Specific
Condition (Execution) Action* Lead-time– Snowfall 0-2" Mobilize staff. Stage 24-hrs
equipment. Maintain Ops. 8-hrs min.
– Snowfall 2-6" Maintain Ops. Rail Real-time.restrictions optional.
– Snowfall 6-8" Maintain Ops. Service Real-time. delayed or altered.
– Snowfall > 8" Reduced operations. Real-time.Suspend operations.
*Accumulation and lead-time affect the decision process
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
Precipitation Precipitation
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• Liquid Precipitation - General
Condition Action Lead-time
– Heavy precipitation Speed reductions. Operator'sDiscretion
– Heavy precipitation Maintenance checks for Operator'sroadbed washout. Discretion
– Flooding Protect trains. Warn Minimalengineers. Adjust schedules, re-routetraffic, or cancel routes;as necessary.
• Liquid Precipitation - General
Condition Action Lead-time
– Heavy precipitation Speed reductions. Operator'sDiscretion
– Heavy precipitation Maintenance checks for Operator'sroadbed washout. Discretion
– Flooding Protect trains. Warn Minimalengineers. Adjust schedules, re-routetraffic, or cancel routes;as necessary.
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
Precipitation Precipitation
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• Liquid Precipitation - Specific
Condition Action Lead-time
– Flooding Alter or delay rail schedule, 1-hr as necessary. Check pumps
in flood prone areas.
– Flooding Inspect bridges, trestles, 1-hrtunnels, and other structures
for operational integrity.
• Liquid Precipitation - Specific
Condition Action Lead-time
– Flooding Alter or delay rail schedule, 1-hr as necessary. Check pumps
in flood prone areas.
– Flooding Inspect bridges, trestles, 1-hrtunnels, and other structures
for operational integrity.
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
Precipitation Precipitation
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• General
Condition Action Lead-time
– Severe Thunderstorm Delay routes, adjust Operator's schedules; as necessary.
Discretion
– Lightning Cease refueling operations. Operator's Cease switching operations.
Discretion Curtail rail car inspections.
• General
Condition Action Lead-time
– Severe Thunderstorm Delay routes, adjust Operator's schedules; as necessary.
Discretion
– Lightning Cease refueling operations. Operator's Cease switching operations.
Discretion Curtail rail car inspections.
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
Thunderstorms / Lightning Thunderstorms / Lightning
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• Air Temperature
Condition Action Lead-time< 32 deg F Monitor personnel and 6-12hrs
equipment stress, crewcomfort and safety.
> 85 deg F Catenary problems Operator’s in older railwayDiscretion installations--reduce
speed.
> 85 deg F Monitor personnel and 6-12hrsequipment stress, crewcomfort and safety.
> 90 deg F Track inspections. Slow or Real-time suspend operations.
• Air Temperature
Condition Action Lead-time< 32 deg F Monitor personnel and 6-12hrs
equipment stress, crewcomfort and safety.
> 85 deg F Catenary problems Operator’s in older railwayDiscretion installations--reduce
speed.
> 85 deg F Monitor personnel and 6-12hrsequipment stress, crewcomfort and safety.
> 90 deg F Track inspections. Slow or Real-time suspend operations.
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
TemperaturesTemperatures
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• Railway Temperature
Condition Action Lead-time
< 32 deg F Track inspections. Slow Real-timeor suspend operations.
32 - 85 deg F No maintenance action. N/A
> 85 deg F Monitor personnel and Real-timeequipment.
> 90 deg F Track Inspections. Slow or Real-timesuspend operations.
– Extreme temperature gradients over time is critical to rail expansion and contraction.
• Railway Temperature
Condition Action Lead-time
< 32 deg F Track inspections. Slow Real-timeor suspend operations.
32 - 85 deg F No maintenance action. N/A
> 85 deg F Monitor personnel and Real-timeequipment.
> 90 deg F Track Inspections. Slow or Real-timesuspend operations.
– Extreme temperature gradients over time is critical to rail expansion and contraction.
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
TemperaturesTemperatures
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• Type of obscuration to vision (fog, smoke, haze, glare) is not important.
Condition Action Lead-time
<3 mile Rail speed reductions. Operator's(depends on speed and
Discretion length of train).
• Type of obscuration to vision (fog, smoke, haze, glare) is not important.
Condition Action Lead-time
<3 mile Rail speed reductions. Operator's(depends on speed and
Discretion length of train).
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
VisibilityVisibility
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• General
Condition Action Lead-time
Blown debris Clear routes. Delay Operator'soperations. Discretion
60-65 mph, crosswinds Rail service delays, as Operator's necessary. Suspend Discretion operations, as necessary.
– Sustained strong wind is more of a factor than gusts.
• General
Condition Action Lead-time
Blown debris Clear routes. Delay Operator'soperations. Discretion
60-65 mph, crosswinds Rail service delays, as Operator's necessary. Suspend Discretion operations, as necessary.
– Sustained strong wind is more of a factor than gusts.
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS
WindsWinds