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William Browder Director of Operations, Association of American Railroads

WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS. Railway Perspective. William Browder Director of Operations, Association of American Railroads. OVERVIEW. Weather Information Needs / Requirements Results. PRECIPITATION TEMPERATURES VISIBILITY WINDS.

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William Browder Director of Operations, Association of American Railroads

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  1. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Railway Perspective William Browder Director of Operations, Association of American Railroads

  2. OVERVIEW Weather Information Needs / Requirements Results • PRECIPITATION • TEMPERATURES • VISIBILITY • WINDS

  3. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Precipitation • Frozen Precipitation - General ConditionAction*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 snow Mobilize staff. 24 hrs (optimum) Icing/Freezing Rain Stage equipment. 8-hrs (minimum) *Accumulation and lead-time affect the decision process

  4. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Precipitation • 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-hrs plan. • Snowfall 6-8" Initiate appropriate action 12-hrs plan. • Snowfall > 8" Initiate appropriate action 12-hrs plan. *Accumulation and lead-time affect the decision process

  5. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Precipitation • 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

  6. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Precipitation • Liquid Precipitation - General ConditionActionLead-time • Heavy precipitation Speed reductions. Operator's Discretion • Heavy precipitation Maintenance checks for Operator's roadbed washout. Discretion • Flooding Protect trains. Warn Minimal engineers. Adjust schedules, re-route traffic, or cancel routes; as necessary.

  7. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Precipitation • Liquid Precipitation - Specific ConditionActionLead-time • Flooding Alter or delay rail schedule, 1-hr as necessary. Check pumps in flood prone areas. • Flooding Inspect bridges, trestles, 1-hr tunnels, and other structures for operational integrity.

  8. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Thunderstorms / Lightning • General ConditionActionLead-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.

  9. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Temperatures • Air Temperature ConditionActionLead-time < 32 deg F Monitor personnel and 6-12hrs equipment stress, crew comfort and safety. > 85 deg F Catenary problems Operator’s in older railway Discretion installations--reduce speed. > 85 deg F Monitor personnel and 6-12hrs equipment stress, crew comfort and safety. > 90 deg F Track inspections. Slow or Real-time suspend operations.

  10. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Temperatures • Railway Temperature ConditionAction Lead-time < 32 deg F Track inspections. Slow Real-time or suspend operations. 32 - 85 deg F No maintenance action. N/A > 85 deg F Monitor personnel and Real-time equipment. > 90 deg F Track Inspections. Slow or Real-time suspend operations. • Extreme temperature gradients over time is critical to rail expansion and contraction.

  11. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Visibility • Type of obscuration to vision (fog, smoke, haze, glare) is not important. ConditionActionLead-time <3 mile Rail speed reductions. Operator's (depends on speed and Discretion length of train).

  12. WEATHER INFORMATION NEEDS / REQUIREMENTS RESULTS Winds • General ConditionActionLead-time Blown debris Clear routes. Delay Operator's operations. 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.

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